How good is my computer only for gaming?

[SimonL]

Hello guys! Since I don't know much about computers I would like to ask YOU guys
I don't have much money for the parts, so the budget is low!
I have been look at some parts my self! (NOTE: atm. im playing League of legends, Counter-strike cs/CS:GO. Im looking for a new computer because my pc can't run these game without lags)
Specs of possible future computer:
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CPU: Intel i3-4130 (I think dual core is fine for now, because I don't do anything else than gaming, and if its gets a problem in the future, i'll upgrade to a i5 quad core)
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GPU: MSI GTX 750 Ti 2gb gaming edition (I think this GPU will work perfectly with the games mentioned above)
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RAM: G. Skill Ripjaws Gaming - 1600 Mhz 2x4GB
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Motherboard: ASUS H81M-D Plus
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Storage: some 500gb hard disc (I wont be needing a ssd now)
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Windows 8
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PSU: Some 550watt psu

What do you guys think?

 

[Rationale]

That'll run LoL and CSGO very well on ultra settings. You'll have to settle for around high/30fps or medium/60fps in a few really demanding games like BF4, just so you know.

The i3-4130 is fine, one of the best budget CPUs. It trades blows with the FX-6300 in game performance.

Overall it looks fine, ideal for a low cost build.
This power supply would be more than enough for that PC, and it's $35 with the rebate. http://pcpartpicker.com/part/evga-power-supply-100b10500kr

 

[mortsmi7]

Sounds like it will run most current games on med to high settings. It's more than enough for the games you play.
Though I question your lag. Are you having low frame rates or actual lag? I ask because even the best computers can fall prey to slow connections.

 

[SimonL]

THank you guys for your help! Im going for this build
@mortsmi7 - The lag is fps lag. atm im running league of legends at lowest settings at 1280x800 with 60 fps, sometimes drop to 20-30...
and CS:GO is almost unplayable on this computer