HARDWARE

Corsair Dominator Platinum Dual-Channel DDR3 Memory Kits (Part 6)

5/4/2013 3:33:51 PM

Performance

In the performance tests, we tested the speed of the LGA1155 platform with various dual-channel memory kits from Corsair Dominator Platinum series. Each kit was tested in two modes:

·         Automatic configuration (each of timings is set by the mainboard's BIOS in accordance with XMP data) and

·         The highest clock speeds and the best timings (achieved in our overclocking tests above) are set up by hand in the mainboard's BIOS.

First, we want to make synthetic benchmarks of memory bandwidth and latency. We will use the memory test from SiSoft Sandra 2013 for that. Using a multithreaded Stream algorithm, it is completely consistent with the modern memory controllers optimized for multi-core CPUs.

Sandra 2013, the memory performance, MB / sec

Sandra 2013, the memory performance, MB / sec

Sandra 2013, Memory Latency, ns

Sandra 2013, Memory Latency, ns

The clock speed of DDR3 SDRAM does not affect the parameters of the memory subsystem on the Ivy Bridge platform. For instance, increasing the clock speed by 333 MHz is helpful to improve the practical bandwidth by 10-20% and reduce the latency by 5-10%. However, the benefits are not evident at all at higher frequencies because of weak timings. For instance, the practical bandwidth is likely to be even lower when moving from DDR3-2400 to DDR3-2666. The latency remains the same, so the faster memory will be always certain of higher performance for your computer.

The SiSoft Sandra 2013 results showed that the selection of DDR3 SDRAM modules turned to be particular. However, this is a synthetic test to measure the speed of the CPU to find out how fast the CPU can work with system memory. Daily applications are not sensitive memory is not too sensitive, but we also want to test them.

CINEBENCH 11.5, Rendering

CINEBENCH 11.5, Rendering

Adobe Photoshop CS6, second

Adobe Photoshop CS6, second

WinRAR 4.2, Bench, KB / second

WinRAR 4.2, Bench, KB / second

X24, H.264 Encoding first pass, fps

X24, H.264 Encoding first pass, fps

X24, H.264 Encoding second pass, fps

X24, H.264 Encoding second pass, fps

Fast memory is really suitable in some cases, especially if its price is not much different from the price of the ordinary products. For example, the memory subsystem parameters can affect the speed of the gaming applications.

3D Mark 11, physics

3D Mark 11, physics

Crysis WARHEAD, 1280x800 UHQ

Crysis WARHEAD, 1280x800 UHQ

Far Cry 2, 1280x800 UHQ

Far Cry 2, 1280x800 UHQ

Of course, the graphics subsystem affects the frame rate most, but the frequency of memory is also a factor. Fast memory can help you to make the performance better by a few percent. So, again, the choice of DDR3 SDRAM is rather significant, especially on its frequency.

However, there are some exceptions to that rule. Let’s take notice of the performance of DDR3-2400 kit CMD16GX3M2A2400C10. Sometimes it's better than DDR3-2133 kit CMD8GX3M2A2133C9 because it includes two 8GB modules that have less aggressive timings than the 4GB ones.

Conclusion

Corsair’s Dominator Platinum series is appealing; there are some positive traits that no other product can provide. In addition to the great speed, carefully selected memory chips, smart PCB and reputation of the brand; the memory kits are special thanks to their exclusive exterior design. Their heatsinks are efficient in terms of cooling and looks. Corsair is the only manufacturer of overclocker-friendly memory which can ensure that both the chips and the PCB are cooled properly while the integrated highlighting will make the Dominator Platinum appear in the modder's computer. It is impossible for you to find a better solution for your system if you're modding.

The only weak point is its price. The Dominator Platinum series costs about twice as much conventional memory modules with the similar technical specs. So, that is the extra amount of money is paid to provide for a limited group of enthusiasts who can enjoy their aesthetics and enjoy Corsair Link connection with capabilities of extended monitoring.

Talking about the special products in the Dominator Platinum series, the CMD8GX3M2A2133C9 kit assessed for DDR3-2133 mode seems to have the most fascinating price/specifications ratio. It features positive timings for pretty high speed and can work at the voltage of 1.5 volts. We are also impressed by the CMD8GX3M2A2666C11 kit that is the first DDR3 SDRAM we have ever seen is able to work at 2666 MHz. Its high frequency makes the computer much faster in memory-sensitive applications: by 7 to 10% compared to with normal DDR3-1600.

In our opinion, the basic products of Dominator Platinum are unattractive. Although they have all the external luxury of the series and are compatible with Corsair Link, they are unlikely to run at really high speeds. Corsair is very accurate when it comes to choosing chips for special memory kits. Therefore, we do not hope much that the DDR3-1600 and DDR3-1866 kits can overclocked with the frequencies of their high-end products family.

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