[...] While Team Green will likely retain the overall performance advantage, a quad-core Haswell with a 4GHz Turbo mode will offer 256 gigaflops of double-precision floating point (512 gigaflops single-precision). That level of single-precision performance is right in the neighborhood of Nvidia&#8217;s GT 640. Because Nvidia has historically hobbled double-precision performance on consumer cards, quad-core Haswell could well outperform Nvidia&#8217;s GTX 680 and possibly pace the GTX 580 in DP operations. [...]