Test System Setup
Processor(s): Intel Core i7 860 @ Varies (See Graphs)
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
When it came to having a look at how the PC3-18400 kit from G.Skill performed, we compared it against the G.Skill RipJaws and A-DATA X Series kits which are both PC3-16000, while also throwing in the Kingston Hyper-X PC3-17066 kit.
As always, we've included the same kit in its overclocked form to find out what kind of extra performance we can get from the kit when we jam some more MHz through it.
Let's get started!
Important Note: When modules are overclocked we adjust the BCLK which not only lets us fine tune the MHz out of a module but in turn increases the overall CPU clock speed. While we always make the effort to include the BCLK and CPU Speed in our graphs, please just make sure that you make note of these when looking at the results. In some tests that don't purely test the memory speed the extra MHz on offer from the CPU can increase the result. Of course, it's also worth noting that having faster memory gives you the ability to run your CPU at a higher speed.
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 can see that the kits that offer us more MHz on the CPU are able to pull out the win here. As we overclock the G.Skill kit and we get closer to that 4200MHz CPU clock, performance is right on top of the PC3-16000 kits that are running at 4200MHz.
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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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