Nah. With a 2500k you OC by multiplier. There's no FSB:DRAM ratio to worry about or anything like that.
So the speed will be virtually unnoticeable? I like the look of it (I'm big on looks) so I may get it anyway...
Yeah, the speed would be the same unless you are running a synthetic memory benchmark.
I'd really suggest sticking to 1.5v memory for SB. Check the motherboard's supported memory list as well.
Please listen to Ratbuddy here, hes completly correct. 1.6v is probably as high as it is safe for an i7 and even then will still more than likly slighly lower your CPU life.
The first thing I learnt about DDR3 ram, expecially with sandy, is timmings do fapp all. Literally. Even in a benchmark your barley notice anything. The only real way to increase the ram speed, is by the Mhz, but that won't make much of a real life difference still. After 1600mhz, the speed becomes less and less noticable. And on sandy, you won't be touching anything that will speed the ram up, thus 1600mhz will be just fine.
Basically don't fall for the marketing hype
