Quote Originally Posted by Cronos View Post
Actually it should be ((39.750-32.672)/32.675 = 21.7%.
That's 108% scaling. Its incorrect because you're not working out percentages here, but percentage change. The formula is as follows

Maths:
http://www.gcseguide.co.uk/percentages.htm
http://mathforum.org/library/drmath/view/63055.html

New - Old / Old x 100 = Percentage Change

Quote Originally Posted by MR_SmartAss
KTE, your math is wrong. Also, the SuperPi 1M time is 38.968s for 2GHz. Read the first post.
For single channel it's 39.750s for dual channel its what you said: http://www.xtremesystems.org/forums/...22&postcount=1

For simplicity, we swap the top figures around or it would become a minus change this time because of importance is decreasing values, not increasing (which is practically untrue i.e. to us 7 sec dropped is not 7 disadvantage but 7 advantage). The base always stays the same as its "new" relative to "old". What matters is the change.

38.968s - 32.672s (change) / 38.968s (relative to old) x 100 (percentage) = 16.157%

If you use that first general formula it would be -16.157% change which is perfectly true from the original time. But to us that's a +16.157% performance gain.

Now we can use a simple percentage formula:

16.157 / 20 x 100 = 80.8% scaling.