Processor and GPU

I'm thinking of buying a new processor to support my GPU, and I want to know if the difference will be noticeable or not, so I wont spend money for nothing..

the processor I intend to buy : AMD Athlon 64 X2 6000+ AM2 ( It has to be AM2)

Can you advice me on what to do?

My rig:

Processor: AMD Athlon 64 x2 4600+ AM2

Graphics Card: Geforce 8800 GTS 640 MB

RAM: 1 Gig

Motherboard: M2N-E

I'm thinking of buying a new processor to support my GPU, and I want to know if the difference will be noticeable or not, so I wont spend money for nothing..

the processor I intend to buy : AMD Athlon 64 X2 6000+ AM2 ( It has to be AM2)

Can you advice me on what to do?

My rig:

Processor: AMD Athlon 64 x2 4600+ AM2

Graphics Card: Geforce 8800 GTS 640 MB

RAM: 1 Gig

Motherboard: M2N-E

Sparrow560Dude

I actually have 2 gigs of RAM, I mistyped there

About the power supply. I'm using a 400w power supply unit, will that do ?

I dont want to make too many changes because my PC is relatively new, i only bought it 5 months ago

thanks for the help

What PSU do you have??

I'm using a 400w power supply unit,

Sparrow560Dude

Enermax Librety if that helps :S

also forgot to mention if you get a bigger power supply you should see a performance increase in the computer in general , as in CPU , GPU , everything.

http://www23.tomshardware.com/cpu_2007.html?modelx=33&model1=929&model2=921&chart=419

Show me some benchmarks where you see a 50% increase.

http://www23.tomshardware.com/cpu_2007.html?modelx=33&model1=929&model2=921&chart=419

Show me some benchmarks where you see a 50% increase.

Gog