it's about time for me to get a new system and now I wanted to hear some advice/comments on what I have in mind. I'm no hardware pro and my knowledge is decent at best. I do not plan to overclock and mostly play MMORPS, RPGs and RTS games (I'm not too much into First person shooters) at 2560x1440 (I have a 27 inch display with this being its native resolution).
Hold on wait a second, if this is for gaming drop down to the i5 2500k, no point in getting an i7 if your not using the Hyper Threading apps (CAD, 3d Rendering, etc). The i7 is not worth the extra $100 compared to the i5 2500k, its only a little better.
For example lets say you play World of Warcraft, this game is more CPU intensive than GPU.
On AnandTech CPU Benchmarks it shows that the i5 2500k if the second best on the list and again beats the i7 only by a little bit. Remember this for WoW doesnt mean it would be like that for every game.
Since you are getting an unlocked CPU, you will need a CPU cooler if you plan to OC. Hyper 212 + or the Hyper 212 Evo will do the trick.
Your PSU is 760W, most MMOs arent very GPU intensive. So I would go with a Mid-Range card that will do the trick, GTX 560 Ti or HD 6950. Yes the 570 is better, I know just trying to help you save money if you want. With the 760W PSU you would be able to do SLI/CF with the two GPUs I stated. I would add another GPU down the line when I notice that performance is starting to decrease and BAM! With the extra GPU it will bounce you back up into a higher performance (plus the card should be cheaper by the time you need to upgrade it).
If your gonna get the CPU cooler I suggested, the RAM heatsinks might get in the way. Get a lower profile RAM (meaning one without the heatsinks [spikey looking like things]). Now yes this will cost about $5 extra but it up to you. And make sure it is DDR3, 1600mhz, dual channel, 1.5V. This will make your intel CPU not have a shortend life span (anything higher then 1.5V is said to have bad effects with new Intel CPUs)