Graphic card says

[KhellQc]

Says must have Power supply minimum 500W Why... ?

if the power supply has a 6-pin connector isn't that enough ?


build foreseen is

Antec EarthWatts Green EA-380D Green 380W

SAPPHIRE DUAL-X 100370L Radeon R7 265 2GB 256-Bit GDDR5 PCI Express 3.0 CrossFireX

AMD FX-6300 Vishera 6-Core 3.5GHz (4.1GHz Turbo) Socket AM3+ 95W Desktop Processor

BIOSTAR TA970 AM3+ AMD 970 + SB950 SATA

+2 x ddr3

extreme power supply calculator says 360 watt

 

[Dark Lord of Tech]

R7 265 needs a decent 450w PSU.

 

[vixl2ds]

for numerous reasons... you may have 4 hard drives, a lot of fans, other devices... 500W would be the safe amount... + PSU degrades... so if you buy a direct amount.. well it will output 20% less in 2-3 years...

another good reason, buy more than you need... a power supply is more efficient at 50% load... I would say, let it be not more than 70-80%... more efficient means that it will generate less heat (electricity lost to heat)....

so manufacturer isnt accurate for good reasons, and you can go lower, but not too low