Quote Originally Posted by Manicdan View Post
80% is the second thread, so it would be 1.8x not 1.6x. i asked this to JF on an AMD blog he did a while back.
Ok ,think about it like this : 100pts is a base number for 2 full core performance running some workload,so performance without any "compromises". Call it hypothetical dual core bulldozer done the old way. 80% of this is how much? 100x0.8=80pts. How slower is this than the CMP BD used for comparison? 100/80=1.25 or 25% slower. Or if you want to use 100pts as a base for single core and even count non-perfrect scaling(95%) due to software scheduling limitations : 1 hypothetical BD core 100pts,2 of those in CMP design 195pts. 80% of this is how much exactly? 195x0.8=156pts. How much slower than the hypothetical BD is this? Yes, 25% : 195/156=1.25 .