meowmix44 :
Neospiral :
Not an issue. Gonna be a while before a GPU can really overrun a modern Intel CPU, and that's only if Intel keeps tickin' and tockin' with marginal performance improvements.
Would two 690s overun my 2600K?
Still probably not. That CPU is remarkably flexible too, so you could probably ratchet up the multiplier if there were any issues. I think there are better ways to spend $2k on graphics cards though. O_O