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I am having the following hardware components, namely Gigabyte F2A88XM-HD3 motherboard, AMD A8-6600K CPU Kingston 4GB RAM, Sapphire Radeon R9 270 Dual-X 2GB graphics card and a Corsair cooler as well. Now I am looking to buy a new power supply for my computer build. I was looking at the Antec High Current Gamer 620M Power supply and was thinking whether it would be enough to run the graphics card in crossfire along with all other components just fine or not? Thanks for any replies.
I dont think that the Antec High Current Gamer 620M power supply would be enough to support 2 Radeon R9-270 graphics card in Crossfire. You will require atleast a 750W PSU for sure. So, go for the Antec HCG M HCG-750M which will be good enough to run your crossfire GPU in good condition. This PSU is a 80+ Bronze certified and has many modular cables as well. It also comes with the dual 12v rails to run 2 graphics card.
You can also go for the EVGA SuperNOVA 750 G2 80 PLUS GOLD Certified Full Modular Power Supply. This PSU is very good and keeps very silent under load. It also fits perfectly in my Cooler Master HAF 912 case. It has also got a classy look as well. After checking the output current, it seems that the PSU is capable of putting out the full rated wattage all the time. This PSU is definitely a major improvement over most low to mid range power supplies.
There is no other Power Supply compared to the SeaSonic M12II 750. It is a well known brand for making PSUs and most other brands like Antec, XFX, etc; use its build quality. The Seasonic company is one the very few honest brand to give 5 years of warranty. The last one that I was using lasted for more than 5 years or so. The power supplies are highly regulated and protects my computer from power surges as well.