[Durftard]

kind of a strict budget... hard to get "high end gaming and performance" for $600

CPU: Newegg.com - Intel Pentium E2180 Allendale 2.0GHz 1MB L2 Cache LGA 775 65W Dual-Core Processor - Retail
MOBO: Newegg.com - ABIT IP35-E LGA 775 Intel P35 ATX Intel Motherboard - Retail
RAM: Newegg.com - Crucial Ballistix 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory - Retail
GRAPHICS: Newegg.com - SAPPHIRE 100226L Radeon HD 3850 512MB 256-bit GDDR3 PCI Express 2.0 HDCP Ready CrossFire Supported Video Card - Retail
PSU: Newegg.com - CORSAIR CMPSU-450VX ATX12V V2.2 450W Power Supply 90 - 264 V UL, CUL, CE, CB, FCC Class B, TUV, CCC, C-tick - Retail
CASE: Newegg.com - COOLER MASTER Centurion 534 RC-534-KKN2-GP Black Aluminum & Mesh bezel / SECC Chassis ATX Mid Tower Computer Case - Retail
COOLING: Newegg.com - ARCTIC COOLING Freezer 7 Pro 92mm CPU Cooler - Retail
MONITOR: none
O/S: none
HDD: none

total comes to 596.93

if you're able to scrounge up a few more bucks and you need a HDD, add Newegg.com - Seagate Barracuda 7200.10 ST3160815AS 160GB 7200 RPM 8MB Cache SATA 3.0Gb/s Hard Drive - OEM
if you're able to scrounge up a few more bucks and you DONT need a HDD, change the video card to ClubIT Product - GIGABYTE Geforce 8800GT 512MB 256bit GDDR3 PCI-Express 2.0 HDCP & SLI Ready Video Card Retail GV-NX88T512H-B

in my opinion... you'd be better off waiting and saving up more money