The Guru of 3D posted a review on the OCZ Silencer 750 Quad Crossfire edition PSU
A quote from the article:
OCZ Silencer 750 Watt Quad rail PSU - Crossfire edition review
OCZ bought PC Power & Cooling, for the time being OCZ will sell the PC Power & Cooling as is. It's now their high-end segment of power supplies which is interesting as I always figured their now mid-range line to be pretty snazzy as well.
With this small introduction on OCZ's, PC Power & Cooling product line we land at the Silencer PSU rated 750 Watts. The product as shown today is available in two SKU versions, one SLI and one Crossfire. The SLI version is colored dark black, the Crossfire version in demonic red. The difference between the two ? .. none except the color.
OCZ Silencer 750 Watt Quad rail PSU - Crossfire edition review