Need suggestions on new Desktop system choice

[jediphx]

ok I didnt think I would be able to upgrade my system but something has come up and I might have about 600 or 700 to spend. I would like to go dual core be it intel or amd. I do like to play the latest games but not 24/7 like some people i know. my current system is a athlonxp 2600+ M that does 2.5ghz, 1 gig pc3200, 2 80 gig 7200 hds and a nvidia 6800 vanilla. I would like to upgrade to something better in all areas if i can but i understand that 700 is not a ton. Can anyone give me some suggestions? If I dont keep any of my current system i will probably just sell the parts etc. Thanks

 

[jediphx]

a friend suggested this:

Intel Core 2 Duo E4300 Allendale 1.8GHz 2M shared L2 Cache LGA 775 Processor - Retail

SAPPHIRE 100201SR Radeon HD 2900XT 512MB 512-bit GDDR3 PCI Express x16 HDCP VIVO Video Card - Retail

mushkin 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory - Retail

GIGABYTE GA-P35-S3L LGA 775 Intel P35 ATX Intel Motherboard - Retail

Thermalright XP-90 Multiple Heatpipes CPU Heatsink - Retail

or

AMD Athlon 64 X2 4000+ Brisbane 2.1GHz 2 x 512KB L2 Cache Socket AM2 Processor - Retail

CORSAIR XMS2 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory - Retail

BIOSTAR TF560 A2+ Socket AM2 NVIDIA nForce 560 MCP ATX AMD Motherboard - Retail

SAPPHIRE 100201SR Radeon HD 2900XT 512MB 512-bit GDDR3 PCI Express x16 HDCP VIVO Video Card - Retail

 

[AznSensation]

Dell Vostro 1500.