Hey guys, planning to build a simple PC. Appreciate any help I can get

[Budget]
- RM800-RM1000

[Purpose]
- Work and mild gaming

[Hardwares that will be re-use]
- Power Supply: Cooler Master RS-460-PCAR-A3
- Graphic Card: PowerColor HD5770 1GB

[Monitor Resolution]
- Don't need monitor, just the desktop

[Games & softwares that use frequently]
- Dota 2, Diablo 3

[Personal preferences]
- Okay with both AMD and Intel as long its within budgey

[Location]
- Selangor

Thanks in advance!