Posted by fp4

The LSP750 while it works for your build I wouldn't recommend it since it's not good, it only has 42A (550W) of power on it's 12V rail. Good 750W PSUs actually put out 62A (744W) on their 12V rail.

Didn't realize scumbag PSU makers were still doing this.  

Posted by fp4

The LSP750 while it works for your build I wouldn't recommend it since it's not good, it only has 42A (550W) of power on it's 12V rail. Good 750W PSUs actually put out 62A (744W) on their 12V rail. It wouldn't be able to handle a setup that actually demands 750W like CrossFire 280X.

Your PSU: http://www.tigerdirect.ca/applicatio...?EdpNo=3276567

Good PSU: http://pcpartpicker.com/part/xfx-pow...ply-p1750snlb9

Thanks for the advice. You are correct. I got it at the time because it was the cheapest PSU that had good reviews but still had enough power for my needs. I might be mad if it was not so cheaply priced and otherwise reliable. I run it 24/7 and it is rock solid. Besides the cards I am only running a 95watt Phenon II x6, 16gbs of 1666MHz DDR3 and a 256gb SSD "all my old hard drives are in other PCs or USB enclosures". Also note my build is like 3 years old and mostly low-mid end stuff then. so I wouldn't recommend it for heavier loads. I also have a AVR stabilizing my voltage levels. http://www.amazon.com/Tripp-Lite-LC1.../dp/B0000514G8 My voltage and electricity was reliable in the city, but out here in hickland the undervoltages and fluctuations would probably screw up my stuff without it.
I am also aware that CrossFireX is not helpful on everything, so it really depends on what you want to run. One powerful card and a CPU with less cores but higher clock speeds would probably be ideal for most people.