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Super Talent W1866UX2G8 DDR3-1866 Memory Review
Super Talent W1866UX2G8 DDR3-1866 Memory Review - PCSTATS
Super Talent introduced some of the first DDR3 memory modules on the market, and in this review PCSTATS is testing the companies' 2GB W1866UX2G8 DDR3-1866 memory kit. Super Talent has these puppies to running at 1866 MHz!
 85% Rating:   
Filed under: Memory Published:  Author: 
External Mfg. Website: Supertalent Sep 18 2007   C. Sun  
Home > Reviews > Memory > Supertalent W1866UX2G8

Introduction to the DDR3 Memory Standard

PCSTATS has a pile of benchmarks and Super Talent W1866UX2G8 DDR3-1866 overclocking tests ready for you, so if you're already familiar with what separates DDR3 from DDR2 skip ahead to the next page of this article.

Okay, DDR3...

As your geek friend has probably told you, desktop computer memory is in a transitory phase. No one expects DDR3 to really take hold until 2008, when quad-core processors take hold of the PC landscape completely. It's hard to say where AMD will fall in with all of this, its 'K10' microprocessor architecture is not expected to adopt DDR3 RAM until 2009. By then prices will be a lot lower, and speeds much higher. :-)

Differences in memory: DDR2 and DDR3 are not interpretable

As with all new standards, it's important to state the obvious right from the start to minimize confusion. While DDR2 and DDR3 RAM Dual Inline Memory Modules (DIMMs) are physically the same size, and contain the same number of little gold connector pins (240), the RAM sticks are keyed differently and are not interchangeable.

DDR3 RAM like the Super Talent W1866UX2G8 DDR3-1866 modules will not work in a DDR2 motherboard even if the chipset is technically DDR3 compatible (ie. Intel P35 Express). Conversely, DDR3 memory slots are not backwards compatible with DDR2 memory modules.

These are 1.5V DDR3 memory slots (above), looks pretty much exactly like DDR2 doesn't it? Below you can see a DDR3 memory module over top of a DDR2 module. Note the subtle difference where the DDR3 module is 'keyed' with respect to the DDR2 module. Both memory standards have exactly 240 gold connectors, but DDR3 operates at 1.5V, DDR2 at 1.8V.

New memory standards are almost always made incompatible with old ones, usually voltage and data transfer architectures are to blame.

Placed edge to edge, it is easy to see the physical difference between DDR2 and DDR3 modules rests with where that small key space is positioned. It prevents DDR2 memory from being installed in a DDR3 motherboard and vice versa. The pins line up perfectly.

One obvious difference between DDR-3 memory and its predecessor is that DDR3 operates with less voltage. DDR-3 RAM runs with 1.5V, while DDR2 demands a little more, 1.8V. Next, unique memory slots prevent you from running DDR3 memory in a DDR2 memory slot and vice versa. The memory standards themselves are not interoperable, so neither are the sockets.

JEDEC standards dictate desktop DDR2 memory speeds to between 400-800 MHz, although chipset and memory manufacturers have pushed DDR2 speeds much further. The JEDEC standard for DDR3 memory starts at 800 MHz, running as high as 1600 MHz. While there is a bit of overlap in terms of speeds, it's not likely to last.

At the moment most DDR3 memory is coming in two flavors, 1066 and 1333 MHz. The speed will increase as the memory standard matures.

PCSTATS Test Methodology:

On Intel Socket 775 Core 2 Duo test systems, we're only interested in seeing how high we can go with the DDR3 memory running 1:2, as running with other dividers puts the overclocking bottleneck elsewhere and not with the system memory. The DDR3 RAM latency must run at its lowest possible setting, as quick access is more important to the CPU design. Just for arguments sake, we will also be conducting overclocking tests to see how high the memory will go with lax timings (8-8-8-24), although we will only benchmark the system with the tight memory timings mentioned above.

Let's get started, overclocking is next!!

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Contents of Article: Supertalent W1866UX2G8
 Pg 1.  Super Talent W1866UX2G8 DDR3-1866 Memory Review
 Pg 2.  — Introduction to the DDR3 Memory Standard
 Pg 3.  Overclocking Supertalent DDR3 memory!
 Pg 4.  DDR3 Memory Benchmarks: Sandra XI, WinRAR, PCMark05
 Pg 5.  DDR3 Memory Benchmarks: 3DMark06, Doom 3, FEAR
 Pg 6.  Max Memory Overclocking Chart and Conclusions

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