What is better a better brand for Power Supply CoolerMaster Or Corsair



Hi - Neither of those brands are that desirable. Both do, however, have some good models. If they
are the only brands available to you, the with Corsair, go with their HX or AX series PSU's if you
can afford to. With CM, go with the V series, many of the silent pro are also good, but list the model #
here 1st, as some are questionable.
 
Also the TX from corsair is good. Just avoid the Corsair CX and GS lines if you can... What is your budget and where do you live? Why are you limited to those two brands? Personally i'd try to go with Seasonic, Super Flower, XFX, or EVGA (B2, G2 models).
 


Hi - The entire TX series has been discontinued for some time.
 
I live in the U.S and my budget is up to 90$ for the power supply, This is my first build so i choose this brands because i seen really good reviews about them.

Corsair CSM 550W 80+ Gold Certified Semi-Modular ATX Power Supply
Is one of my chooses and the part # is CS550M
 
PCPartPicker part list / Price breakdown by merchant

Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply ($58.99 @ SuperBiiz)
Total: $58.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-06-23 14:47 EDT-0400

OR

PCPartPicker part list / Price breakdown by merchant

Power Supply: EVGA 750W 80+ Bronze Certified Semi-Modular ATX Power Supply ($54.99 @ NCIX US)
Total: $54.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-06-23 14:47 EDT-0400

This one is $85 with a $30 mail-in but if you think you might some day SLI/Crossfire this one would be a good option.