Is the HIS Radeon 6950 compatible with the i5 processor? If so, which motherboard would someone recommend? The reason I ask is because in this post: http://www.tomshardware.com/forum/page-297721_28_50.htm... There is a lot of mention of a 6850 being used but not a 6950 except in relation to the X4 processor.
Additionally, what does this mean? "500 Watt or greater power supply with two 750W 6-pin PCI Express® power connectos recommended" (from HIS' website). I have a Antec Earthwatts 650W power supply that is almost 3 years old and I am not sure if I need to upgrade it to 750W?
The is no issue regarding compatibility between CPU's and graphics cards. It will work, period.
Regarding your second question, I don't understand their comment regarding the 750W, unless they mean that 750W is required for two 6950's in Crossfire. An Antec 650W will be more than sufficient for a single 6950.
The manufacturer recommends a 500w PSU or above wattage. The 6-pin connector gives out 75W of power and since the graphics card uses 2-6 pin power connectors, so its adds up 75+75=150W. I believe it was a typing error of two-750w 6-pin PCI Express Power connectos Rec.