My PC Specs:
Asus ROG Rampage IV ExtremeIntel® Core™ i7-3960X Processor Extreme Edition4x ASUS ROG MATRIX HD 7970 GHz Edition 3GB GDDR5VECTOR SERIES SSD 256GB SATA 3 6Gb/s [For Software]VECTOR SERIES SSD 256GB SATA 3 6Gb/s [For Games]VECTOR SERIES SSD 512GB SATA 3 6Gb/s [For Game Setups]EVGA SuperNOVA NEX1500 ClassifiedCustom Liquid Cooling
Are you running 4 7970s on a single 1500W PSU ? If so I would recommend linking a second 1500W in series, This will double your +12V Amps per rail, now you only have 20A per rail. X8 on your +12V
You may be OK with the 1500W but running 4 Matrix cards will surprise you how much juice they take at full load, overclocked.
The Matrix cards draw Apx. 150W from the PCI Express 3.0 slot, and under load apx. 300W from the 8-pin connectors. Add a 130W processor, Custom liquid cooling,...and the rest of your system. You may want to look into doing a load calculation, to see what your combined system watts are.
Edited by Braegnok, 24 December 2012 - 05:03 PM.