Why are Corsair PSU more popular?

[pastymuncher]

Out of those two the Coolermaster. It's the best series of psu they have had for years. It's a high quality Seasonic unit with 840w on the 12v rail. Jonnyguru gave it 9.7/10 in his review.

As a alternative take a look at the EVGA Supernova 850w G2. It's a quality unit built by Superflower and based on their Leadex Gold platform but EVGA gives it a whopping 10 year warranty. Jonnyguru gave this one 9.9/10 in his review.

Do you actually need that much power though? If you are running a single GPU you probably don't need more than 500-550w.

[Joshyy]

at the moment cant decide wether to go for a cooler master v850 or a corsair rm850 any ideas whats better?

The coolermaster one would be a better choice (coming from someone with an RM PSU) It's one of the best affordable PSUs out there, the v850 right now. At a good price too.

[Murph02]

The coolermaster is certainly cheaper.