Just recently I picked up a very cheap GTX 280 from my friend who decided to move up to the 5870. I already have a GTX 280 and an SLI capable motherboard and was thinking of going SLI. I'm wondering though how much I will be bottlenecked by my CPU. I'm not too keen on OC'ing, but would do it if the resulting performance increase in SLI would be noticeable.
My CPU temps are fine, only around 50 on graphics-intense games (Crysis) with ~40% fan speed. GFX cards run a bit hot (75-80C) but that's still within acceptable range I think?
I guess my main questions are:
1) How much of a bottleneck am I getting trying to run 2 GTX 280's on my Q9300 w/ stock clocks?
2) If I decide to OC, will I need higher spec'd DDR2 ram? Is there any DDR2 RAM you'd recommend?
I also game at 2048 x 1152. I'd like to avoid any swapping of CPU/Mobo/GFX cards if possible as I intend on rebuilding around the GTX280's (i7, X58, DDR3 etc) sometime later next year. Just looking for a quick fix (if needed) to hold me over for the next 10-12 months.