Here's my input also. You could also go the super money saver route like I did. In a sense... lol
I went with the AMD X2 555 Callisto @ 3.2GHz a core. But, the thing is I got the ASUS M4A77TD motherboard with Turbokey ($90 and has 6 core 125 watt cpu support also) and it unlocked the 2 hidden cores of my cpu. It was super easy, just press the number 4 on the motherboard's boot screen and viola. $90 for a quad core and another $90 for the motherboard, you simply can't beat that. And I'm running around 51c max on load using just air and Arctic Silver 5. Which is still kinda warm, but anything under 70c for the cpu is fine and anything under 55c for the gpu is fine. But I'm going to be moving to this stuff soon
http://www.frozencpu.com/products/7038/ ... html?tl=g8From what I've heard and the reviews on that site, it's simply amazing.
Anyway here's what I would recommend. I would actually sell your GTX 260 if I were you and use that money to put towards a newer GPU. You could get around $150 for those still I think depending on the memory it has, and upgrade to this.
http://www.newegg.com/Product/Product.a ... 6814130568I have the 1GB EVGA GTX 460 SE which has like 60 fewer cores and I can run 100% max settings on pretty much every game I have, and some I have are intense graphic wise. Dirt 3, NFS Hot Pursuit, Just Cause 2. Even Flight Sim X, I play in 100% max. So depending on how the new game will be (haven't seen anything about it yet, I probably a little behind unlike you guys) you will be set for a few years with that GFx card.
I'd stick with that CPU you have too, but maybe look into this motherboard.
http://www.newegg.com/Product/Product.a ... 6813131651Same USB 3.0 and SATA 6.0 but has support for up to 16GB of ram instead of 8 like the Gigabyte one. And it's only $3 more. Or if you're willing to splurge another $40 for a motherboard (I'll show you a different heat sink in a minute which will save some $ anyway) then look into this motherboard
http://www.newegg.com/Product/Product.a ... 6813131631For RAM, I have 1 set of these and scored a 7.5 in Windows Experience (I have 7.5 in ram, 7.3 in graphics, 7.3 in processor, and 5.9 in hard drives but of course they will always score lower, but WE is only out of 7.9 too)
http://www.newegg.com/Product/Product.a ... 6820211364Super solid RAM. My motherboard preset them to 667mhz though, but they have been running so well I don't need to go to the BIOS to OC them. If you get 2 sets of those you're set. And you're only gonna spend $3 more.
Last but not least, the heat sink.
http://www.newegg.com/Product/Product.a ... ter%20n520I decided to save money on my part and just run the stock heat sink (which surprisingly, has been great for me, because I've heard stock AMD ones a garbage) but anyway I was planning on this one. It's pretty close to the V8, it does its job and does it well and doesn't take up as much space. I'd recommend this over the V8, and if you get that diamond compound, you're golden.
Those are just my ideas. Not to put down NNNG's, I just thought my thoughts would help too. Your PSU should be good for a while too. I'm running a 550 watt with my set up, 3 hard drives, fan controller on 4 fans, and have been utterly flawless.