|Personally I would suggest buying an APU system so you don't have to worry about graphics card. This one is an AMD Trinity 3.8 GHz Quad-Core, for only $120. Great deal IMO:|
Here's some nice RAM. Personally, I really like G. Skills. It is 2x4 GB which is perfect for gaming. Sure, its about $15 more than other 2x4, but it has 9-11-11 timings which is pretty good. Also, I've had better luck overclocking G skills than other brands, so if you want to go that route, choose these:
As for motherboard, that's really up to you. To decide, answer these questions:
How many hard drives do you want? (i.e. number of SATA ports)
Are you going to want additional graphics cards? (PCIe slots)
Are you going to upgrade the RAM in the future? (get 4 DIMMs instead of just 2)
Just make sure it is FM2/FM2+, and supports 2133MHz RAM.
For PSU, DO NOT cheap out! Having a cheap/weak power supply can really screw you, especially when you want to upgrade in the future.
This will probably end up costing you around 500 USD, so quite a bit over your initial budget. You could always reduce the CPU to a 3.0 GHz quad or 4.0 dual. Also, you could get cheaper/slower RAM to save some cash.
message edited by NT56erbx