Jaquith, why won't the 2600k be better than an i7 950?
2600k has unlocked multi, higher stock, 32nm, get a motherboard with the NF200 if you really need 3 gpus, x8 is fine for dual card xfire/SLI as long as you aren't going for dual 5970 or 6990.
The multiplier stuff is stupid, but I figure if they have unlocked multiplier CPUs for not much of a price premium, why complain. Only worry is lower class CPUs not having any K variants.