Test System Setup
Processor(s): Intel i7 920 @ 4GHz (200MHz x 20)
Cooling: Noctua NH-U12P (Supplied by Noctua)
Motherboard(s): GIGABYTE EX58-UD5 (Supplied by GIGABYTE)
Graphics Card(s): GIGABYTE GTX 285 (Supplied by Gigabyte)
Memory: 3 X 2GB OCZ Blade PC-16000 DDR-3 7-8-7-20
Hard Disk(s): Western Digital 300GB Velicorapter (Supplied by Western Digital)
Operating System: Windows 7 Ultimate 64-Bit Final OEM, Windows Vista SP2 64-Bit
Drivers: ForceWare 190.38
There isn't anything too out of the ordinary when it comes to our testbed. It's the standard memory one we use which carries with it a 4GHz clockspeed vs. a 3.8GHz one that our VGA testbed runs at.
As mentioned in the intro, we'll be seeing how the performance of the two operating systems compares under our standard memory benchmark suite which consists of programs that concentrate on memory and CPU performance.
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 Windows 7 we can see that as far as pure CPU performance goes the numbers are up (which isn't what we want) for wPrime.