Greetings boys and girls!
My very first post, glade that i found this site, hope i can get some help and help in return

.Been a gamer for years(console) but just got myself into PCs, my friend a year ago helped me to make this system:
So my full system:
CPU:Core2Duo e6600
GPU: HIS ATI x1950xtx
Motherboard: Intel DG965SS
RAM: Kingston KVR667D2N5(2x1gb)
Sound: Sound Blaster audigy 2ZS
HD: W.D Raptor 80gb(10k rpm)
Monitor: Eizo Flexscan M1900
Power source: Tagan TG480-U22
So i was thinking on replacing my 667 MHz ram with
OCZ PC2-6400 EL DUAL CHANNEL DDR2 2GB (2gb total) and my GPU with a
GAINWARD 8965 BLISS 8800GT.
My questions are to you:
1.Is this a good upgrade all in all in your opinion?
2.Will my power source be Ok with the new video card?
3.x1950xtx and 8800gt have a big difference?(8800 is only around 200$ these days)
4.As for OP should i dump my Windows XP and get Vista(heard that they are unstable, and not good overall for gaming)
Thanks a bunch in advance for reading my newbie post, i hope someone can help me out
Best wishes
EDIT:Was meant to post this in "
Peripheral Equipment"

sorry