The resolution shouldn't be an issue then. It's a fairly low resolution and that'll make it not too demanding for the Radeon 7750 in any game so long as the settings are reasonable. Your CPU may be a little more problematic, but it's not horrible and should be playable in all modern DX11 games and most other games with reasonable settings.
Your RAM performance is a little low, but that shouldn't be an issue because gaming (despite some RAM companies wanting you to think otherwise) doesn't impact gaming too much with modern CPUs. Your RAM capacity should be adequate.
Even if your PSU is a crap model, it should be fine with such a low-power system (maybe even considerably overkill), but if you want to be extra careful, you could tell me...