ddr3 a data ram. Flash drive for iPhone and iPad. Review of the excellent ADATA i-Memory UE710. A-Data launches high performance SO-DIMM mobile memory modules
Today on my operating table is a cool flash drive for iPhone, iPad or iPod Touch from ADATA - i-Memory UE710. The main feature of this flash drive is the ability to connect it to iDevices through the Lightning port, and the other side to the computer through USB port 3.0 (or 2.0). In this review, I will try to describe its capabilities, as well as strengths and weaknesses.
The i-Memory Flash Drive comes in a small cardboard box with a plastic insert. The kit comes with a flash drive and instructions in a bunch of languages. Including in Russian. There is almost nothing written in the instructions, so we will figure it out ourselves.
Ahead on the box (and on the flash drive itself) the size is indicated. There are 3 options: 32, 64 and 128 gigabytes. In principle, it is logical that the line does not have 16 gigabytes (because it is not enough) and 256 gigabytes (because it would be very expensive).
On the reverse side are the dimensions of the device and system requirements. The flash drive is very light - only 16 grams. Fits in any pocket.
The top side of the i-Memory is glossy black. Dust and fingerprints tend to leave their mark on the surface. There is also a choice of white and pink.
The reverse side in my version is gray. It can be seen that the body of the flash drive is fastened tightly from 4 parts.
And now the most interesting. On the side of the flash drive is a switch that has 3 positions:
- Left - USB available for PC/TV connection
- Right - Lightning available for connection to iPhone, iPad or iPod Touch 5, 6
- Central - both connectors inside the case. Convenient to carry.
Switching the position of the lever occurs with little effort and characteristic clicks. The positions are fixed very well, so the flash drive will not have a situation when you stick it into the port, and the connector starts to crawl inside the case on its own. This infuriates me with many ordinary USB flash drives.
We connect i-Memory to the device:
Program for interacting with the iMemory flash drive
Unlike many Chinese counterparts, AData focuses on its built-in application, which is actively maintained in App Store. I explain popularly. Having bought a Noname flash drive on some Chinese site, you run the risk that it will download maximum photos from you. iOS is a very closed system and without a jailbreak, even the official Apple accessory - the Camera Connection Kit loses the lion's share of its functionality.
AData acted in a very (cunningly) smart way - they released their own program in the App Store, which in terms of functionality greatly expands the capabilities of the drive. When you first connect to the flash drive, the program will be prompted to install. For subsequent ones, the system will offer to open the program. Very good and helpful.
What can be done through the built-in program:
- transfer photos and videos from phone memory
- backup contacts
- create folders (that is, you can scatter files over them)
- copy, cut and paste files
- view photos and videos, listen to music, view documents
I will dwell on the last point in more detail:
The plate from the official site shows the seriousness of AData to capture the market. At first I did not believe it, but then I started testing mp3, mkv, avi ... The program easily coped with the task. Yes, you can not even copy files anywhere, but simply view them from a USB flash drive.
Watch video:
Listening to music:
Screenshots from the app:
Files can be laid out on a flash drive as you like. In folder Conductor, you will see the entire file structure.
It would seem - perfect! But not really. I identified only 2 shortcomings, and Apple is more to blame for the first.
- The program does not see music due to iOS restrictions.
Quoting the FAQ:
Apple does not allow content to be moved directly to/from iTunes from iPhones or other iOS devices. However, most songs can be transferred to i-Memory UE710 using a Mac or PC and then listened to. All new songs from iTunes can be played. A small number of older songs are still protected by the stricter DRM (Digital Rights Management) service and can only be played normally in iTunes.
My program did not see any licensed purchased music, or pirated mp3s uploaded to the phone. So you can only download music from a PC or Mac and listen to it from a USB flash drive, but not import it in any way.
2. Sometimes viewing files with the built-in program does not satisfy me, but opening the file in another program is not possible.
a) I want to watch a movie, and there are 3 audio tracks in the file. The built-in program, with all due respect, takes only the first track.
b) I look at the PHP file, and the program writes that this is an unsupported type. OK. But how to open it with another program?
Fortunately, small files can be sent by mail to yourself or uploaded to Dropbox or sent by message. But you can't do that with movies.
Maybe the developers will fix this feature. I already wrote to them about this - it turned out that AData has Russian support. I also sent them a couple of minor but unpleasant bugs with the Cyrillic alphabet. Surely, they will fix such a trifle.
Important. About formatting. Out of the box, i-Memory is formatted in OS X Extended format. I recommend immediately reformatting it to FAT 32. The fact is that your phone and tablet absolutely do not care what format the flash drive is in, but some TVs do not understand the OS X format. I encountered this when I recorded a bunch of films for a trip to my parents ... So format it boldly!
A-Data managed to surprise me with its application. Even jailbreak is not necessary for practically full-fledged work with additional memory. And the quality of the i-Memory UE710 is at a decent level. Recommend for expanding the memory of your favorite apple gadgets. Good stuff!
P.S. I took the flash drive as a gift to my younger sister on the condition that I would test it for at least two weeks for a review. She dreamed about her, because she loves to take pictures and shoot videos, and the memory in her iPhone is only 16 gigabytes. I think it's a wonderful gift. Don't find it?)
from correspondence with my sister :) A-Data has expanded its line of high performance notebook memory with the launch of the new XPG Gaming Series DDR3 SODIMM. This gaming series of memory was previously released only for desktops, but now the company decided to provide high-performance, and at the same time capacious memory strips and mobile devices.
A-Data has updated its line of DDR3 XPG Gaming Series memory kits and introduced two new dual-channel kits, which are characterized by high capacity and high operating frequency. In addition, the memory chips have an aluminum heatsink, also designed to improve the cooling of devices. Both memory kits consist of two 4 GB memory modules, so the total capacity of each kit is 8 GB.
The 4 GB module can operate at DDR3-1600 MHz, with 9-9-9-24 latencies, and supports an operating voltage ranging from 1.35 V to 1.4 V. Unlike other similar A-Data notebook memory modules , the novelty is equipped with a small radiator.
The module supports XMP technology to improve DDR3 performance. The memory is sold as a single 4 GB module, or in a dual-channel 8 (2 x 4) GB kit. The cost of new items has not yet been named.
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A-Data has updated its line of DDR3 XPG Gaming Series memory kits and introduced two new dual-channel kits, which are characterized by high capacity and high operating frequency. In addition, the memory chips have an aluminum heatsink, also designed to improve the cooling of devices. Both memory kits consist of two 4 GB memory modules, so the total capacity of each kit is 8 GB.
A-Data launches high performance SO-DIMM mobile memory modules
After the release of the N004 solid state drive, A-Data announced the release of new high-performance mobile DDR3 SO-DIMM memory modules, which are characterized by low power consumption, high performance and overclocking capability. Such devices are intended for use as part of gaming laptops, as well as for upgrading the memory subsystem of laptops by experienced users. New items are presented within the XPG series and are called DDR3L 1600G. The new memory modules operate at 1600 MHz with 9-9-9-24 timings.
Kingston has developed two high-performance memory kits for laptops
In addition to several HyperX T1 Black high-end triple-channel memory kits Kingston company released two memory kits for laptops based on the new Intel Huron River platform and Sandy Bridge processors. New items are available as part of the HyperX series. They consist of two DDR3 SO-DIMM modules. However, the capacity of the modules varies.
Acer launches affordable AMD laptop
Acer has expanded its range of notebooks and introduced the affordable TravelMate 5542, based on the AMD platform. The novelty is equipped with a 15.6-inch display with LED backlight, which supports a resolution of 1366 × 768 pixels. The device also contains a 2-core AMD Athlon II P340 processor operating at a frequency of 2.2 GHz, DDR3 RAM up to 4 GB, HDD 250 or 320 GB capacity, DVD optical drive and Radeon HD 4250 graphics solution.
Transcend Launches 8GB DDR3 Memory Kits
Transcend, after the announcement of CFast memory cards, has released new dual-channel DDR3 memory kits as part of the aXeRam series. Such devices are positioned for use by gamers, overclockers and professional users who use 64-bit versions of operating systems. The presented kits consist of two modules with a capacity of 4 GB each. Thus, the total capacity of the kits is 8 GB. Such memory modules operate at a frequency of 2000 MHz with timings of 9-11-9-24 at a supply voltage of 1.6 V.
Samsung Launches 8GB DDR3 Mobile Memory Modules
Samsung announced the release of new DDR3 memory modules aimed at use in laptops and mobile workstations. Such novelties are made in the SODIMM form factor and have a capacity of 8 GB. technological process. For new products, an operating voltage of 1333 MHz is declared at a supply voltage of 1.5 V.
Samsung launches economical DDR3 memory modules
Samsung announced the release of new DDR3 DRAM (dynamic random-access memory) memory modules designed to upgrade the memory subsystem of desktop and mobile computers. These new products are characterized by high performance with low power consumption. Samsung's new memory modules are based on chips that are manufactured according to the 30-nanometer process technology. The capacity of the modules can be 2 or 4 GB.
Elpida Announces Cost-Effective DDR3 SO-DIMMs
Elpida has announced new DDR3 SO-DIMM memory modules designed for use in laptops. The presented memory modules consist of 16 memory chips with a capacity of 2 GB each, so the total capacity of the module is 4 GB. In this case, the memory chips used are manufactured according to the standards of the 30-nanometer process. It is noted that such devices consume 20% less energy in operation mode and 30% less energy in standby mode compared to chips made on the basis of 40-nanometer technology.
Enermax launches Aeolus Premium CP003 laptop cooler
After the release of the Modu87+ high efficiency power supply, Enermax released the Aeolus Premium CP003 laptop cooler. The presented device has dimensions of 350x335x45 mm and allows you to install laptops with a screen diagonal of up to 17 inches. This model is made of aluminum, contains a steel grate, and its weight is 1.3 kg. The novelty is equipped with a 250 mm fan that can rotate at speeds from 650 to 850 rpm and emit noise from 17 to 20 dB.
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We continue to explore the critical characteristics of high - speed DDR2 modules at a low level with the Universal Benchmark . Today we will consider modules from a Taiwanese manufacturer - A-DATA company of the Vitesta series, designed for a frequency of 800 MHz (in DDR2 mode). Module manufacturer information
Module manufacturer: A-DATA Technology Co., Ltd.
Module chip manufacturer: Elpida Memory, Inc.
Module manufacturer website: Chip manufacturer website: Appearance module
Photo of the memory module
Photo of a memory chip
It was interesting to find that after removing the radiator (which was a fairly easy and painless procedure for the modules), the appearance of the modules remained quite decent and complete. In particular, both on the radiator of the modules and on the modules themselves there are stickers with Part Number and serial numbers, and in the second case, even with the company logo, which is unlikely to be seen by an ordinary user :). Part Number of the module and microcircuit
Module Part Number
What's nice is that the module numbers on the stickers on the outside and inside match (serial numbers, however, no longer match). However, there is no guide for decoding the Part Number of Vitesta DDR2 memory modules on the manufacturer's website. On the module description page, only the main technical characteristics are indicated: the capacity of each module is 256 or (in our case) 512 MB, the modules are based on 32Mx8 chips, operate with a CAS# delay of 5 and a standard supply voltage of 1.85±0.1V.
Part Number of the microcircuit
Description specifications(data sheet) 256-Mbit DDR2 Elpida memory chips:Note that the marking of the chips of this module somewhat does not correspond to the official specification given in the data sheet of the memory chips. Namely, the marking begins with a single letter "E" instead of the expected letter combination "EDE", in addition, there is no package type code ("SE" = FBGA-package). However, we have seen a similar approach to marking Elpida microcircuits before (for example, on microcircuits of modules Kingston DDR2), so this is the rule rather than the exception. SPD chip data
Description of the general SPD standard:
Description of the specific SPD standard for DDR2:
| Parameter | Byte | Meaning | Decryption |
|---|---|---|---|
| Fundamental type of memory | 2 | 08h | DDR2 SDRAM |
| Total number of module line address lines | 3 | 0Dh | 13 (RA0-RA12) |
| Total number of module column address lines | 4 | 0 Ah | 10 (CA0-CA9) |
| Total number of physical banks of the memory module | 5 | 61h | 2 physical banks |
| External data bus of the memory module | 6 | 40h | 64 bit |
| Supply voltage level | 8 | 05h | SSTL 1.8V |
| Minimum clock period (t CK) at maximum delay CAS# (CL X) | 9 | 25h | 2.50 ns (400.0 MHz) |
| Module configuration type | 11 | 00h | Non-Parity, Non-ECC |
| Type and method of data regeneration | 12 | 82h | 7.8125ms - 0.5x reduced self-regeneration |
| Data bus external interface width (organization type) of used memory chips | 13 | 08h | x8 |
| Width of the external data bus interface (organization type) of the used memory chips of the ECC module | 14 | 00h | Undefined |
| Packet duration (BL) | 16 | 0Ch | BL = 4.8 |
| Number of logical banks of each chip in the module | 17 | 04h | 4 |
| Supported CAS# delay times (CL) | 18 | 38h | CL=5, 4, 3 |
| Minimum clock period (t CK) with reduced delay CAS# (CL X-1) | 23 | 30h | 3.00 ns (333.3 MHz) |
| Minimum clock period (t CK) with reduced delay CAS# (CL X-2) | 25 | 3Dh | 3.75 ns (266.7 MHz) |
| Minimum data recharging time per line (t RP) | 27 | 32h | 12.5 ns 5,CL=5 ~4.2, CL=4 ~3.3, CL=3 |
| Minimum delay between activation of adjacent rows (t RRD) | 28 | 1Eh | 7.5 ns 3,CL=5 2.5,CL=4 2,CL=3 |
| Minimum delay between RAS# and CAS# (t RCD) | 29 | 32h | 12.5 ns 5,CL=5 ~4.2, CL=4 ~3.3, CL=3 |
| Minimum RAS# Signal Pulse Width (t RAS) | 30 | 2Dh | 45.0 ns 18,CL=5 15,CL=4 12,CL=3 |
| Capacity of one physical bank of memory module | 31 | 40h | 256 MB |
| Recovery period after recording (t WR) | 36 | 3ch | 15.0 ns 6,CL=5 5,CL=4 4,CL=3 |
| Internal delay between WRITE and READ commands (t WTR) | 37 | 1Eh | 7.5 ns 3,CL=5 2.5,CL=4 2,CL=3 |
| Internal delay between READ and PRECHARGE commands (t RTP) | 38 | 1Eh | 7.5 ns 3,CL=5 2.5,CL=4 2,CL=3 |
| Minimum row cycle time (t RC) | 41, 40 | 39h, 30h | 57.5 ns 23,CL=5 ~19.2, CL=4 ~15.3, CL=3 |
| Period between self-regeneration commands (t RFC) | 42, 40 | 4Bh, 30h | 75.0 ns 30,CL=5 25,CL=4 20,CL=3 |
| The maximum duration of the clock period (t CK max) | 43 | 80h | 8.0 ns |
| SPD revision number | 62 | 12h | Revision 1.2 |
| Checksum bytes 0-62 | 63 | B9h | 185 (correct) |
| JEDEC Manufacturer Identification Code | 64-71 | 7Fh, 7Fh, 7Fh, 7Fh, CBh | A-DATA Technology |
| Module Part Number | 73-90 | | Undefined |
| Module manufacturing date | 93-94 | 00h, 00h | Undefined |
| Module serial number | 95-98 | 00h, 00h 00h, 00h | Undefined |
The content of the SPD looks almost standard. The modules support all three possible values of the CAS# signal delay - 5, 4 and 3. The maximum value corresponds to the clock signal period of 2.50 ns (frequency 400 MHz, nominal mode DDR2-800) and quite a common timing scheme 5-5-5-18. Reduced latency CAS# (CL X-1 = 4) is prescribed for use in DDR2-667 mode (clock period 3.00 ns, frequency 333.3 MHz). Unfortunately, it is not possible to apply integer timing values for this case - rounding to the tenth gives a scheme of 4-4.2-4.2-15, which, most likely, will be perceived by motherboard BIOSes as 4-5-5-15 (rounding to larger side for reasons of greater stability). The last twice reduced value of t CL (CL X-2 = 3) corresponds to the DDR2-533 mode (cycle time 3.75 ns, frequency 266.7 MHz). The timing scheme for this case also turns out to be non-integer - 4-3.3-3.3-12 (that is, in reality - 4-4-4-12). The manufacturer's code indicated in the SPD, which is pleasant, is true, however, there is no data on the date of manufacture, Part Number and serial number - and this already does not make a very good impression. Test bench and software configurations
Test stand #1
- Processor: Intel Pentium 4 560, 3.6 GHz (Prescott rev. E0 core, 1 MB L2)
- Chipset: Intel 955X, FSB 200 MHz
- Motherboard: Gigabyte 8I955X Pro, BIOS version F5 dated 07/05/2005
- Memory: 2x512 MB A-DATA DDR2-800, single/dual channel
- Video: Leadtek PX350 TDH, NVIDIA PCX5900
- HDD: WD Raptor WD360, SATA, 10000 rpm, 36Gb
- Drivers: NVIDIA Forceware 77.72, Intel Chipset Utility 7.2.1.1003, DirectX 9.0c
Performance Tests
For a number of reasons, among motherboards, only one model turned out to be a participant in testing A-DATA DDR2-800 modules - Gigabyte 8I955X Pro. Note that this board is one of the few that support such a fast memory as DDR2-800. As in our previous study, we conducted tests in both the usual dual-channel and single-channel modes in order to show the potential of DDR2-800 modules (in particular, throughput) in a “pure form”.
| Parameter | Stand 1 | |
|---|---|---|
| Dual channel mode | Single channel mode | |
| Timings | 5-5-5-15 | 5-5-5-15 |
| Average memory bandwidth for reading, MB/s | 5799 | 5770 |
| Average write bandwidth, MB/s | 2456 | 2393 |
| Max. Memory bandwidth for reading, MB/s | 6457 | 6333 |
| Max. Write bandwidth, MB/s | 4279 | 4279 |
| 44.0 | 44.0 | |
| 51.7 | 51.7 | |
| 93.7 | 93.9 | |
| 113.2 | 113.4 | |
| Minimum pseudo-random access latency, ns (no hardware prefetch) | 68.4 | 68.4 |
| Maximum pseudo-random access latency, ns (no hardware prefetch) | 87.9 | 87.9 |
| Minimum random access latency * , ns (no hardware prefetch) | 94.1 | 94.3 |
| Maximum random access latency *, ns (no hardware prefetch) | 114.2 | 114.3 |
* block size 16 MB
The 5-5-5-15 timing scheme set by the board by default (Memory Timings: "by SPD") is slightly different from the scheme specified in the SPD (5-5-5-18). True, we can safely close our eyes to this difference, because, as we saw in the next series of tests, the modules under consideration are absolutely insensitive to the t RAS value set in the chipset configuration registers, like most other DDR2 modules.
The speed indicators (PSP) of the modules in dual-channel and single-channel modes are somewhat different - of course, in favor of the dual-channel mode. The biggest difference (though only 2%) can be seen in the maximum real read bandwidth test (6457 versus 6333 MB/s). The difference is small, however, in the previous module study Corsair XMS2-8000UL this was almost never observed. It is possible, of course, that this is due to the use of different processors (Pentium 4 560 and 670) - it is very likely that the larger L2 cache of the Pentium 4 670 processor is able to hide the differences in memory bandwidth to a greater extent. Nevertheless, the potential of the considered DDR2-800 "in its pure form" (ie due to the real throughput of a single channel) also turns out to be quite good.
In addition, they cannot but rejoice at very low (noticeably lower, compared with the same Corsair XMS2-8000UL) the magnitude of the delays in memory access, even with the standard timing scheme. Nevertheless, this cannot be directly considered an advantage of these modules over the others - after all, the tests used different models of motherboards (and, most importantly, different BIOS versions) and different processors (the influence of this factor is much less likely, but however, it should not be excluded). Therefore, the final answer to the question whether the considered memory modules are really characterized by lower delays requires additional research.
Stability tests
Timing values, with the exception of t CL , were varied "on the fly" thanks to the built-in RMMA test suite ability to dynamically change the memory subsystem settings supported by the chipset. The stability of the memory subsystem was determined using the auxiliary utility RightMark Memory Stability Test, which is part of the RMMA test package.
To achieve the minimum timings, we set a slightly higher supply voltage of the modules - 2.2V. Naturally, the experiment could also be carried out at a standard (for these modules) voltage of 1.85V, but, firstly, the result would hardly have turned out to be as indicative, and secondly, it could not be directly compared with the result achieved for modules Corsair XMS2-8000UL.
The minimum timings that allow you to set the memory modules in question in DDR2-800 mode without losing stability are 4-4-4 (attempts to further reduce the values of t RP and/or t RCD led to an immediate system freeze). Of course, this clearly falls short of previous records set by Corsair modules (4-3-3 for XMS2-8000UL and even 4-3-2 for XMS2-5400UL). At the same time, you must admit that the possibility of setting the timing scheme, which is more typical for DDR2-533 (by standard) and DDR2-667 (in fact) modules, looks quite good in DDR2-800 speed mode.
| Parameter | Stand 1 | |
|---|---|---|
| Dual channel mode | Single channel mode | |
| Timings | 4-4-4 (2.2V) | 4-4-4 (2.2V) |
| Average memory bandwidth for reading, MB/s | 5841 | 5825 |
| Average write bandwidth, MB/s | 2465 | 2421 |
| Max. Memory bandwidth for reading, MB/s | 6477 | 6367 |
| Max. Write bandwidth, MB/s | 4279 | 4279 |
| 43.7 | 43.8 | |
| 50.9 | 51.1 | |
| 88.6 | 89.0 | |
| 107.9 | 107.7 | |
| Minimum pseudo-random access latency, ns (no hardware prefetch) | 67.9 | 68.0 |
| Maximum pseudo-random access latency, ns (no hardware prefetch) | 87.4 | 87.8 |
| Minimum random access latency * , ns (no hardware prefetch) | 89.0 | 89.2 |
| Maximum random access latency *, ns (no hardware prefetch) | 109.0 | 109.0 |
* block size 16 MB
“Timing overclocking” brought quite predictable changes to the test results: a slightly (very slightly) increase in the read bandwidth, a slight decrease in the latency of random access. The gap between the indicators of the dual-channel mode and those for the single-channel mode has somewhat decreased (the maximum difference - in the maximum real memory bandwidth for reading - is now only 1.7%), which, in general, is also quite natural. Results
The tested A-DATA DDR2-800 memory modules of the Vitesta series proved to be high-speed modules capable of almost reaching their full potential of this type memory (tests in single-channel mode), which, moreover, have very low latency (at least in our experiment). The overclocking potential in terms of timings of these modules is also quite good - at a supply voltage of 2.2V (typical for high-end "enthusiast" class modules), the modules operate stably at 4-4-4 timings - a scheme more typical for entry-level DDR2-533 modules and high-end DDR2-667 modules. As in the case of our previous studies, it is too early to judge the compatibility of DDR2-800 class memory modules with various motherboards, because motherboards that really support such high-speed memory modes can still be counted on the fingers of one hand.
When the question of building a system based on the LGA1366 platform is raised, it is quite likely that kits designed for an operating frequency of 1600-1800 MHz will be used as memory. This is at best. At worst, when a ready-made PC is purchased, in system block DDR3-1333 modules with a total volume of 3-6 GB will modestly "shelter". Of course, with a three-channel memory controller in Intel processors Core i7-9xx bar frequency is not so critical, but what Russian does not like to drive fast? Taking into account a certain margin of safety, initially included by the manufacturer in their products, it is quite possible to achieve higher frequencies than those for which the memory is officially designed. We will try to find out whether this is so on the example of a DDR3-1333 memory kit with a capacity of six gigabytes manufactured by A-Data.
A-Data DDR3-1333G
Although A-Data products were not mass-produced on our market, some memory modules could sometimes please enthusiasts and overclockers with their potential. The slats are delivered in a sealed blister with an insert label, on which there is nothing interesting.
A-Data DDR3-1333G modules (the kit has the article code AD31333G002GU3K, and each module has the article AD31333G002GMU) belong to the series for gamers, are made on a green PCB and are equipped with standard black aluminum heatsinks, which are attached to the chips using thermal Velcro.
A sticker is glued on each half of the radiator - one of them contains information about the operating frequency, timings and voltage, and the second has a barcode and memory article. And if the frequency of 1333 MHz and delays like 8-8-8-24 are unlikely to attract attention, then the voltage of 1.65 ~ 1.85 V can be a little confusing. But the values in this limit are quite safe - the main thing is that the delta between the memory supply voltage and the memory controller should be about 0.5 V.
Only standard timings for frequencies from 832 to 1333 MHz are registered in the SPD of memory sticks (according to the Everest program): 5-5-5-15 for 832 MHz, 6-6-6-18 for 1000 MHz, 7-7-7- 21 for 1166 MHz and 8-8-8-24 for 1333 MHz. There is no XMP profile, and it is not needed, since everything is already specified without it. Only if necessary, you will need to set the memory supply voltage to 1.65 V instead of the standard 1.5 V.
In addition to four sets of delays and frequencies, the MemSet utility can detect the fifth one, which at a frequency of 1500 MHz allows you to set timings like 9-9-9-27.
Test configuration and overclocking technique
The memory was overclocked on the following configuration:
- Processor: Intel Core i7-965 (3.2 GHz, C0);
- Motherboard: DFI X58-T3H6 (Intel X58);
- Video card: ASUS EN8800GS TOP (GeForce 8800 GS 384MB);
- Cooler: Noctua NH-U12P;
- Hard drive: Samsung SP2504C (250 GB, SATA2);
- Power supply: Seasonic SS-600HM (600 W).
The ratio of the frequency of the clock generator, the multiplier on the memory and the processor in the BIOS Setup motherboard were selected on an individual basis, but more often the CPU multiplier was x23 or x21, and the Bclk frequency was in the range of 133-162 MHz. The bandwidth of the QPI bus was 4800 MT/s. The voltage on the memory controller was set at 1.36 V, since no positive effect was observed at a higher one. The memory voltage was 1.65 V. The remaining BIOS settings did not affect the overclocking level and were set to Auto.
The overclocking potential was found out for three sets of timings that are currently relevant for DDR3 memory: 7-7-7-21, 8-8-8-24 and 9-9-9-27 with Command Rate 1T. Minor delays remained at Auto.
Overclocking results
The potential of the A-Data DDR3-1333G memory turned out to be surprisingly quite good, and with timings of 7-7-7-21, we managed to conquer 1510 MHz. The frequency of the clock generator (Bclk) in this mode was 151 MHz, the multiplier on the processor - x23, on the memory - x10.
Setting the standard delays for these bars of the form 8-8-8-24, the maximum frequency turned out to be 1620 MHz, while Bclk was equal to 162 MHz, the multiplier on the processor and memory corresponded to x23 and x10.
Less aggressive timings - 9-9-9-27, did not affect the result in any way, even with a change in Bclk, and the frequency remained at 1620 MHz.
conclusions
You can save on memory when buying a new kit or increase the performance of a system with a Core i7 by increasing the frequency of an existing kit without any problems, which is confirmed by our small material. And although a memory set with not the best potential was used, its low cost will allow you to spend an extra $ 50-70 on an additional hard drive or “supercooler”, which is enough to cool the junior representative of the Core i7-900 series, since the capabilities of the A-Data AD31333G002GU3K kit allow you to achieve both at least 4 GHz when overclocking the processor. High timings at 1600 MHz
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