GIGABYTE GTX 580 Super Overclock
 

Upon arrival we noticed that it was a completely redesigned beast from
the cooling, PCB design, power circuitry and amped up clock speed, all
while maintaining a dual slot design and familiar form factor. So how
does this perform against NVIDIA's reference design, and what features
does it bring to the table? Let's fire up our test bench and find out!

http://www.overclockers.com.au/article.php?id=957057