2x256mb

I intend to buy an Athlon 64 3200+ (Socket 939) Processor. But I don't anything about the different variants it comes in and which one's the best. I know of only the Winchester. What about Venice? Also, which upgradation will boost performance - upgrading from 3000+ (Venice) to 3200+ (939) CPU...

Can anyone tell me the approx prices for these components in Mumbai..?? Intel Pentium 4 506 (2.66GHz, 533Mhz fsb, EM64T) Asus P5GD1-VM (915G) Transcend 512MB DDR 400mhz (2x256mb) Seagate 80GB Sata Microsoft basic optical mouse Microsoft internet keyboard Samsung 793MB