MSI R5870 Lightning review
 

Today we get the chance to analyse a product with some jaw dropping specifications, the MSI R5870 Lightning. This card has a custom PCB design and incorporates the worlds first 15 phase PWM design to offer higher levels of overclocking and stability. This is why they cranked it to 900mhz on the core (+50mhz on reference design) and 1200mhz on the memory (4.8GBps effective).

http://www.kitguru.net/components/gr...htning-review/