Test System Setup
Processor(s): Intel Core i7 920 @ 3.8GHz (190MHz x 20)
Cooling: Noctua NH-U12P (Supplied by Noctua)
Motherboard(s): ASROCK P55 Deluxe (Supplied by ASROCK)
Video Card: Gigabyte GTX 285 896MB (Supplied by GIGABYTE)
Hard Disk(s): Western Digital 300GB Velicorapter (Supplied by Western Digital)
Operating System: Windows 7
Drivers: ForceWare 191.07
Being our first dual channel kit of memory we've tested in our new ASRock P55 setup, we'll simply be comparing the Platinum modules from OCZ against themselves. We'll be testing the kit at 1875MHz DDR 9-9-9-27 which is right near its standard 1866MHz DDR clock. We'll also see the numbers we're able to achieve with the same kit of memory overclocked to 1935MHz 9-9-9-27.
When it came to overclocking the modules to achieve the higher clock rates, we had to move our BCLK. What this means is while we're pushing up the MHz of the memory, we're also moving the MHz of our CPU up. While this isn't a bad thing, it can skew the results in some tests that rely heavily on the CPU along with the memory. That being said, though, the CPU speed and BCLK will be displayed in each graph and we'll tend to make mention when the better performance at one speed over the other is helped by the increase in CPU clock.
Let's get started!
wPrime uses a recursive call of Newton's method for estimating functions, with f(x)=x2-k, where k is the number we're sqrting, until Sgn(f(x)/f'(x)) does not equal that of the previous iteration, starting with an estimation of k/2. It then uses an iterative calling of the estimation method a set amount of times to increase the accuracy of the results. It then confirms that n(k)2=k to ensure the calculation was correct. It repeats this for all numbers from 1 to the requested maximum.
Under wPrime we see both setups perform quite similar to each other. There's very little difference in the 32M test, while the 1024M one does favor the higher clocked RAM and CPU.
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- Page 1 [Introduction]
- Page 2 [The Packaging and Modules]
- Page 3 [Overclocking]
- Page 4 [Test System Setup and wPrime]
- Page 5 [Benchmarks - Everest Ultimate Edition]
- Page 6 [Benchmarks - SiSoft Sandra]
- Page 7 [Benchmarks - Sciencemark]
- Page 8 [Benchmarks - Far Cry 2]
- Page 9 [Final Thoughts]
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