My desktop had a geforce 405 and I am planning to replace it with one of these cards, which one is best? Do also need to upgrade my 250w PSU when I use one of these cards?
SAPPHIRE HD 7950 3GB GDDR5 WITH BOOST
SAPPHIRE VAPOR-X R9 270X 2GB GDDR5 256BIT OC WITH BOOST
SAPPHIRE DUAL-X R9 280X 3GB GDDR5 384BIT OC
SAPPHIRE VAPOR-X R9 280X 3GB GDDR5 384BIT OC WITH BOOST
MSI N650Ti HAWK
MSI N650Ti PE 1GD5/OC (POWER EDITION)
SAPPHIRE HD 7950 3GB GDDR5 WITH BOOST
SAPPHIRE VAPOR-X R9 270X 2GB GDDR5 256BIT OC WITH BOOST
SAPPHIRE DUAL-X R9 280X 3GB GDDR5 384BIT OC
SAPPHIRE VAPOR-X R9 280X 3GB GDDR5 384BIT OC WITH BOOST
MSI N650Ti HAWK
MSI N650Ti PE 1GD5/OC (POWER EDITION)
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