I'm trying to build a gaming rig, bit by bit, and although i dont know what the Mobo and processor will be I know that I will be using the SAPPHIRE HD 7850 2GB GDDR5 graphics card in crossfire, which I think makes up for the majority of power consumption (?). I was looking at buying the following PSU as it recieved good reviews, but i have a tendency to overspend on stuff that i wont need. I was looking for advice on whether this is just right or too much:
The crossfire aspect is whats getting me, ive no idea how to account for that, whether to double the max power of one on its own (around 240watts max. i think) or do as some guides have suggested and just add another ~100 watts.