Sapphire R9 280x compatible with EP45-UD3R and GIGABYTE GE-R460-V1 Superb 460W ?

Solution
I'm going to give a no in this situation.

You are using a p45 motherboard, Ill assume you are using a quad core. so that is 125 watts.

266 watts for your 280x

50w or less for ram and hard drives and dvd

full load sitting around 441 watts.

it's shady setup and a bad idea.
I'm going to give a no in this situation.

You are using a p45 motherboard, Ill assume you are using a quad core. so that is 125 watts.

266 watts for your 280x

50w or less for ram and hard drives and dvd

full load sitting around 441 watts.

it's shady setup and a bad idea.
 
Solution