Performance WPRIME | Memory

Memory Read test

Obviously we also had to peek at memory bandwidth performance. Now, obviously Intel has an advantage here, triple-channel memory. This explains the tremendous amount of read performance for the Core i7 platform. In light orange, the baseline results at 1066 MHz C9 which is the default for Xeon processors.

Then the orange bar above it is the same memory yet with increased baseclocks, and then at 5.5 Ghz we overclocked the memory to 2200 MHZ CAS10, passing 21 GB/sec.

Memory Write test

We did the same with the memory write tests. Intel surely dominate with the memory controller based on-the-die Nehalem family processors. Write performance remained somewhat low.

wPrime

wPrime is a leading multi-threaded benchmark for x86 processors that tests your processor performance by calculating square roots with 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.

Just for the pro-overclockers then, finally some results with wPrime, make nothing of the fact that the fastest runs are world records, look at the 1024M entry at 5.5 GHz, that doesn't suck.