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Kingston HyperX PC3-15000 (1866MHz) LoVo 4GB Kit - Test System Setup and wPrime

By: Shawn Baker | DDR-3 Memory in RAM | Posted: Apr 26, 2010 5:57 am
TweakTown Rating: 90%Manufacturer: Kingston

Test System Setup




We would like to thank the following companies for supplying and supporting us with our test system hardware and equipment: Intel, ASRock, Sapphire, Western Digital, Noctua and Corsair.


Over the coming weeks we'll slowly add more and more memory modules to our graphs as we test more and more memory. For now, though, we'll have a look the Kingston LoVo HyperX kit mainly against itself. We'll also be including the Kingmax Hercules modules we looked at the other week at its stock speeds.


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 worth noting that having faster memory gives you the ability to run your CPU at a higher speed.




Version and / or Patch Used: 1.62
Developer Homepage:
Product Homepage:



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.




The max OC gives us a nice little bit of headroom on our CPU which makes it come out quick under wPrime. You can see at 1866MHz DDR performance is worse due to the fact that our CPU is slower.


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