The 5820K has exactly the same amount of Cores/Threads as the 5930K. I think the only difference is the extra pci-e lane bandwidth and the slightly higher clock speed.
Sorry, I totally fudged up there, I'm not sure why.

After some hard thinking, I don't think I'm ever going to go more than 2 way SLI, so with the cheaper CPU, I could go 980 SLI, but really not worth it XD
Last edited: