With the Athlon X3 450 3.2GHZ costing roughly $89.00, you cannot go wrong with this triple core, high clock rate (lot’s of room for overclocking) processor. This processor should allow most modern games to play well, at decent settings.
The Radeon HD 4650 graphics card at its very low price point of approximately $50 is great starting graphics card for gaming. You should get a great performance of 1280×1024 resolution in most games, and 1680×1050 with lower game details. (If you want to get a slightly better graphics cards for a slightly slightly higher prices, consider the other cards in the “Budget Yielding Alternatives” section below)The Asus M4N68T-M Micro ATX AMD Motherboard includes 2×240 pin memory slots allowing up to a maximum of 8GB of DDR3 memory. A built in Audio chipset allowing 8 channels of sound, and 3 x USB connectors (6 ports).
In this build I included a high quality G.Skill 4Gb (2 x 2GB) DDR3 SDRAM 1333 (PC3 10666), a 320 GB Western Digital Caviar Blue 7200RPM, 3.0Gb/s Hard Drive, a CORSAIR 430 Watt Power Supply, a good ASUS CD/DVD burner, and chose the NZXT Gamma Classic Series Computer Case based on quality and price.
All parts have a set of constituent products under “Budget Yielding Alternatives” that you may feel like considering if you want to go with something a little different (especially with computer cases), or better (as in a hard drive with more space, power supply with more wattage for future use, or higher quality RAM).