New Sysytem Radeon HD 7750 and i3 2130 3.4 GHz

New build basics:

Ram:
Corsair DDR3-1333 4GB Memory Module

Motherboard:
Gigabyte GA-H61M-S2P-B3 IH61 Motherboard w/A8 + G + LK + SATA3

CPU:
Intel Core i3 2130 3.4GHz LGA1155 Processor - 850MHz Graphics Base Frequency

Tower:
Codegen Q3342-A1 Middle Tower Chassis

GPU:
Gigabyte GV-R775OC-1GI Radeon HD7750 16xPCIE 128-bit 1GB GDDR5 w/HDMI + DVI-D + DSUB

PSU:
Thermaltake Litepower Power Supply - 450W

i am on a very tight budget so i am already going a bit over the price to get a dvd writer and a 120gb HDD will this rig be alright'ish ? for games ?