Hi, I'm having a hard time deciding between GTX 670 and HD7970. I'm leaning toward 7970 at the moment due to "Never Settle" bundle. But I'm a bit worry about their power requirement. When calculated using extreme power supply calculator, I'm coming very close to the recommended power requirement (634 watt assuming 100% cpu uti, peak, and 20% aging). While using GTX 670 it's only 575 watt.
My power supply is corsair TX650 v2, it's only 6 month old so I'm not looking to replace it. My monitor resolution is 1080p with 1 23' pc monitor and 1 40' 3d HDTV (love playing skyrim on the big screen )
Is it safe for me to go ahead with HD7970 (Gigabyte GV-R797OC-3GD) or should I go with GTX 670? My main concern is that my PSU won't last very long if pushed with higher power requirement and I it won't be enough for the Gigabyte 7970 since it's overclocked edition. Price are the same in my country but I got free game with AMD.
The rest of the spec: Asus P8z6 m-pro i5 2500k (OC to 4300) 2x4 Corsair DDR3 1600 SSD Corsair force gt, 1 wd black, 1 wd green, 1 old HDD, 1 external usb WD My passport 1 external DVD Combo SB Recon3d PCIE NZXT fan control, 3 extra fan xbox controller, razer naga razer black widow ultimate, Logitech k400 Corsair TX650 V2 (650 watt)
More abouthd7970 watt
650 watts should be fine for the system with either card.
Thanks for the reply. Can I safely overclock the cpu and gpu? Or should I just use the stock speed until I get bigger PSU?