Upgrading 2 yr old i7 system, Advice needed

[freeloadng]

Hiya,
I'm looking to upgrade my current computer to improve primarily gaming performance, so I'm trying to get an idea of what should be improved first and with what parts. Here's the current build:
Motherboard: Gigabyte EX58-UD3R
Processor: Intel Core i7-920 Bloomfield @ 2.66GHz
CPU Cooler: Intel's included cooler
GPU: Nvidia 9600 GT (silent version, no fan), 512 MB
Power supply: RAIDMAX 730W Hybrid 2 ATX12V V2.2/ EPS12V SLI Ready CrossFire Ready
RAM: 4GB, Kingston HyperX, 2 x 2GB 1600
Hard Drive: 500GB, 7200 RPM Samsung HDD
Case: Antec 900, 1 extra side fan pointed at the GPU

Thanks in advance!
Edited in response to skullkrusher's reply.

 

[themarin8r]

Honestly, and newer GPU should do it for you for quite some time, you are up there with everything else. That and maybe an ssd (maybe)

 

[freeloadng]

The current power supply says it's SLI and Crossfire ready, so I think I'll be okay with that part, unless I need a higher wattage after I replace other things...

Model your PC after one these builds...and oh yeah you can still get a pretty penny for that 920 on ebay!

http://www.totalpowerpc.com/dreamscape.html

You could step up to P67 or just wait for X79...as far as what to upgrade first I would seriously think about getting a much better Power Supply...like a Corsair AX850/AX750...make you SLI or Crossfire ready...then work on mobo/cpu/ram...that's what I would do...an Antec 900 is still a great case...legendary, so it should be the least of your worries! For graphics 560 or 6870 Hawk from MSI are best. The 9600GT can still play most of today's games though not on max settings, is a solid GPU though.

 

[jednx01]

crossfire 6950s. GO FOR IT!