My PC Rig

Hey Guys, I just recently put together a mid-range PC. Any suggestions about what I should tweak is greatly appreciated.

AMD Athlon 64 X2 6400+ (3.2 Ghz) AM2 Processor
MSI K9A2 Platinum AM3/AM2+ DDR2 Motherboard
Kingston 8GB 4X2 GB DDR2 800 MHz
600W OCZ StealthXStream Power Supply
LG DVD-RW Drive (standard one)
NZXT Hush Black Silent Steel Chassis
XFX HD Radeon 4890 Graphics Card
Seagate 7200.12 1TB HDD
Dual monitor Set-up: Samsung T220 and Samsung T220HD
Logitech G51 Speakers
Dual booting with Windows Vista 64 Ultimate with Windows 7 64 Ultimate (RC1)

Would my CPU be the bottleneck of my system? I play WoW, Crysis, Fallout 3, Dead Space and AoE III.

I was thinking of upgrading to the Phenom II X4 940 but I don't want to spend too much $$$ so I am also considering the 920.

I'd get at least an x3 phenom II. At $120, its a great price/performance chip. And if this is a build design and not something you'd purchased yet, try the homebuilt section. Lots of people to help this kind of question. Just read the sticky on how to post build questions.

If you haven't done any buying yet, I'd say get DDR3 ram/mobo. Reason being, when the next gen CPUs come out, I'm guessing that the DDR3 ram will work with them just like the AM3s work with both old and new standards and it really isn't that much more. Also, why 8 gigs of ram? Unless you're doing large video editing, you only need 4 gigs.

Thanks guys for the replies. I ended up getting the Phenom II X4 920, upgraded my case to the Antec 900 Gaming Case and got the Arctic Freezer 64 CPU Cooler. I need the memory because I tend to use photoshop and dreamweaver alot.