Originally Posted by sumitlian
Geometry transformations, lighting, and clipping are FPU intensive and sound, explosions, AI, graphics are Integer intensive. I am sure Quad Core i7 will be the bottleneck here, because according to architecture there is 4 ALU and 4 FPU, all can be used concurrently but they compete for available CPU frequency, and FX has 4 FPU cores with 8 Integer cores. 4 real cores in FX can do FPU + Integer calculation concurrently, yes those cores compete for CPU frequency too, but it still have more 4 cores left fully dedicated to Integer calculation only. And I believe this is the thing where FX might shine when running BF4 because it can utilize 8 cores easily. Yes Hexa core i7 should outperform FX, but that is another story.
and yet the benches aren't showing this at all. As i detailed 19 or so pages ago
the FX is actually "punching" WAY under it's weight class in this fully threaded game. My math spelled it out, this game is clearly fully threaded, and well broken down by thread (evenly). So an 8 core FX should perform a LOT better then it currently does. by a factor of 50% better in fact. However the 8 core FX is performing as you'd expect a 6 core... and we know it's not because it's only 6 core optimized, because the 6 core is performing almost exactly 25% worse then the 8 core piledriver, which is exactly how it SHOULD perform if one chip is using 8 cores and the other is using 6.
in short, BF4 might be fully threaded and even AMD optimized, but it's optimized for JAGUAR, not Piledriver. Apparently the chip structure is too different, because piledriver is actually handicapped when running bf4 (that or it's fully optimized for the core i cpu, which makes no sense, since it's designed for a jaguar game cored console)
admittedly the math in my previous post was based on a lot of supposition and thin information, but the one fact that really stood out was the core i sandy bridge cpus were getting MORE then twice the IPC the piledriver chips were getting. Which we know isn't the case with those two chips. the difference isn't 100%, it's really closer to 25%. So piledriver in BF4 is severely handicapped. (sidenote, intel's i7s, were only getting a little more then 9% boost from their hyperthreading which tells me there is a LOT of work that could be done for BOTH chips to make this game run better)Edited by azanimefan - 10/7/13 at 2:37am