Upgrade Advice

[TK1]

Ok guys i have a question regarding upgrading my Graphics card and would it be worth it?

My PC specs are:

AMD 64 3500+
ASUS AV8-N Motherboard
2 GB RAM (4x 512)
GeForce 6800 GT
200 GB HD
Maxtor 3 x 19" Widescreen Monitors
Z-5500 Speakers / X-Fi Fatal1ty Music Sound Card

Mu question is would it be worth upgrading my Graphics card to either a 7900GTX or the 7950 G2? from my 6800GT? or would it be a wast of money as i would not see any major differences in gameplay etc?

Opinions/Advice needed?

Thanks

 

[TK1]

not a typo, i mean i have 3 monitors working off the one Graphics card for surround gaming.