My rigatoni:
OS: Windows 8.1
intel i7 4770 @ stock speeds [3.4GHz, up to 3.9 Max Turbo](4 threads): ~166 H/s -- Wolf0's minerd.exe
PNY nVidia GeForce GTX 750Ti OC [+81MHz Core, +189MHz Memory] : ~274 H/s -- tsiv's ccminer.exe
274/166 = 1.65 , so comparing these 2 mainstream processors, running in Windows, GPU is 1.65 times faster than CPU
Nice PC spec, but you have to admit its well above the average Windows system that is likely to be botnet'd, which is what ppl seem to want to squeak about all the time. At least one of the larger botnets uses a custom 32bit miner which I assume therefore doesnt do AES, so I dont think its unreasonable to estimate hashrates of 40-80H/sec from each compromised system. Compare that to the current favourite XMR mining GPU, the R9-290X, which will do 900H/sec with the latest Claymore miner. The more economical but still good for gaming R9-270X will do 400H/sec.
As I said a few posts before, the ratio of CPU to GPU hashrates is roughly similar to Scrypt and other algos now, so I don't see it as a relevant factor.
