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Written by Olin Coles   
Wednesday, 07 April 2010
Table of Contents: Page Index
6GB Corsair Dominator-GT 2000MHz DDR3 Memory
Closer Look: Corsair Dominator-GT DDR3
DDR3 Series Results
RAM Testing Methodology
System Benchmark Tests
Graphics Benchmark Tests
Triple-Channel DDR3 Final Thoughts
Corsair Dominator-GT DDR3 Conclusion

Graphics Benchmark Tests

In the last section, each triple-channel memory kit was tested with primarily CPU- or RAM-dependant benchmarks. In this section, Benchmark Reviews tests these DDR3 memory kits using CPU-generated graphics and video game frame rate performance.

Cinebench is a free benchmark tool that tests CPU performance. Since the CPU is closely tied to system memory performance, the two are loosely relevant. In our Cinebench R11.5 OpenGL benchmark tests, each kit performed extremely close to the next while processing the video graphics for this tool. While the low-latency 1333MHz CL7-7-7-20 kit did outperform the faster 1867MHz CL7-8-7-20 kit, both were a full frame behind the 2002MHz Kingston HyperX and Corsair Dominator-GT kits. At the central processor level, system memory speed has very little impact on graphics performance, and a low latency can make up for a nearly 700MHz difference in speed.

Cinebench-R11_OpenGL_Benchmark.png

The Retouch Artists Photoshop CS4 test is a free action script that renders and transforms a specific image. While not exactly a benchmark, primarily because it doesn't report a result (you have to record the start/stop time), it's a very good tool for illustrating real-world performance from system memory differences. The downside to this test is that it relies heavily on the storage device used for the program, and results are not comparable between systems.

Our tests were repeated several times before charting the average time below, but from the results we've received it seems that higher speed is nearly as important at low latency. This is generally the rule to shop by: low latency and high speed... the best of both worlds.

Retouch-Artists_Photoshop-CS4_Speed_Test.png

Using the absolute lowest possible settings for Far Cry 2, our benchmark tests become dependant on system memory and the Intel Core i7-980X processor. The minimum and average FPS results are charted below, which illustrates that even in an artificial game environment where RAM is forced to be more relevant than normal, system memory still has very little impact on performance. Using 640x480 system-dependant settings, there was an 8 FPS difference between a 1333MHz and 2002MHz kit. While the Kingston HyperX DDR3 kit offered the best minimum frame rate, the Corsair Dominator-GT memory kit offered the best average FPS.

Far-Cry-2_Benchmark_CPU-Dependent.jpg

Turning the settings all the way up enables Far Cry 2 to play like it will on most computer systems: GPU-dependant. Powered by the ASUS GeForce GTX 285 ENGTX285 TOP video card, there was only 3 FPS between the 1333MHz and 2002MHz kits. The Kingston HyperX DDR3 kit offered the best minimum frame rate by nearly one full FPS, and nearly tied performance with the Corsair Dominator-GT memory kit for the average FPS.

Far-Cry-2_Benchmark_GPU-Dependent.jpg

Obviously, if you're using an X58-based computer system, you probably aren't going to keep the CPU at the stock speed anyway; and you probably also use a video card that makes up for the very small gains delivered by overclocked system memory. This means that faster RAM allows for a faster CPU, and in turn produces a faster frame rate. But in the world of system memory benchmarks, comparing the different sets of RAM using video games is nearly meaningless.

Test Summary

Here's what the graphics benchmark tests have shown us:

  • Low latency triple-channel memory kits are good for CPU-dependant tasks, such as image manipulation in Photoshop, and can make up for memory speed differences in generated graphics.
  • High speed triple-channel memory has a small edge over lower-speed kits when compared in PC video games, but the difference is made minimal because of GPU-dependence. With ultra-high settings, there was only a 3 FPS difference between 1333 and 2002MHz.

Memory Tested

  • OCZ Platinum 6GB 1333MHz CL7-7-7-20-1 DDR3 OCZ3P1333LV6GK
  • Kingston HyperX 2000MHz CL8-8-8-24-1 DDR3 Memory Kit KHX2000C8D3T1K3
  • Corsair Dominator-GT 2000MHz CL7-8-7-20-2 DDR3 Memory Kit CMG6GX3M3A2000C7



 

Comments 

 
# 6 DIMMs on P55?Hsew 2010-04-07 18:49
"Many dual-channel P55-Express motherboards offer six DIMM slots."

I'm sorry, but the only one that comes to mind is the Gigabyte GA-P55(A)-UD6 which, ironically, is STILL limited to 16GB, which means one must either install 4x4 GB or 4x2 and 2x4 GB to satisfy the limit. What is the point of that board anyway?
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# RE: 6GB Corsair Dominator-GT 2000MHz DDR3 MemoryDavid Ramsey 2010-04-08 12:52
The point of that board is to allow you to make use of any single-sided DIMMs you have laying around. It wouldn't make sense if you were buying all-new memory for a new build.
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# HeightSVH 2010-04-14 12:11
Seems the height of these modules would interfere with many of the higher capacity coolers on the market esp. when all 6 slots are used. What cooler did you use in this test? Would it have interfered if all 6 slots were filled. I am interested because I have the same mainboard and memory but need a higher end cpu cooler.

Cheers.
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# ClearanceOlin Coles 2010-04-14 13:19
I used the ProlimaTech Megahalems on the ASUS P6X58D motherboard. The cooler was situated so that the fan blows towards the back of the case. Although the cooler would perform better if it was situated so the fan would blow towards the top, it would interfere with the DIMM slots.
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