Originally Posted by Jaguarbamf
If you plan on keeping this rig for a while, your best bet would be to either wait for Bulldozer or pick up a 980x/990x. Most newer games use between 3 and 4 cores, so in the near future you can expect them to take advantage of more resources.
I would pick up 2 of the GTX 580 Matrix's and a Gigabyte GA-X58A-OC motherboard.
I would pick up a NZXT Hale90 1000w Power Supply to give yourself overclocking and upgrade headroom.
For a case, I'd pick something that looks pleasing to you. Most full-tower cases have great airflow, but if they don't it's because they're meant for water-cooling. If you're staying with air, go for the Noctua NH-D14. If going liquid, get a Rasa kit.
If you want a nice gaming monitor, or several, look for anything 1920x1200 or higher. Most monitors with that resolution are very nice. 3D might also be an option for you to consider.
Whoa bro, hold on:
The 2600k has shown to be better than or ultrarapping the 980x in both ooverclockablilty and gaming performance clock cycle to clock cycle.
That gigabyte board is more tuned to professional overclockers who go sub zero or atleast:
Supreme liquid cooling
It has very few consumer friendly features and Op doesn't seem like a hwbot high end overclocker. He won't find use for it, while that 4G button is cool, it's not for 90% of OCN let alone first time builders.
That powersupply while good is actually not what the Op needs. If all the op is doing is a gtx 580 sli then get a good 850w powersupply an if he goes higher then get a 1200 antec high power
For a high end pc the last thing I would recommend is a rasa kit.
And 1920 x 1200 is not really that great a resolution, first since 580 slu destroys it and second it's a high end build. You should recommend a high class IPS panel along with atleast a 1440p Res or 1600 Res