Best CPU on a 680i LT?

Probably the best CPU for that motherboard is the E8x00.

However, you shouldn't have any bottleneck with your current processor at that speed.

Thanks for the list warmon6!

So at 3.45ghz, I shouldn't worry about bottlenecks? I know I am being a bit paranoid about bottleneck issues (especially since I really don't know the main cause of it other than an inferior CPU), I just want to be safe from it. If my e6750 at 3.45ghz will avoid bottlenecking, I might just stick with that and upgrade my cooling and look for higher clocks.

No problem. If you have anymore questions we'll be glad to help.

As flyin15 sec said you shouldn't see a bottleneck unless you're running other stuff while playing a game then you'll see a bottleneck. If not then your fine.

Anyone have any thoughts of picking up a Q6600 against picking up anything higher?

nope. it's your choice.

If you're are going to upgrade your processor i'd grab the Q9550. That being said I think you'll be fine with your overclocked dual core.

45nm Quads do not like the 680i chipset.

I'm glad a lot of you are telling me to turn away from upgrading my CPU. I seriously would've gone and bought the most expensive one if I wasn't given any input. Thanks!

Whoops my bad. I thought the 45nm quads we're good on that board after a BIOS update. After some double checking, apparently the 45nm Duals are ok, just not Quads. Either way i stick with me previous comment...minus the q9550 suggestion