I would go with the AX1200/AX1200i... has higher efficiency rating than the HX series... - but if you're intending to push real hard that system, even 1200W may prove insufficient...
Heavy OC on the CPU and the two HD7970s will eat up that 1200W - I have a Seasonic X1250W and had to move the fans and pumps on a different PSU when started to push the two Matrix Platinums (3930k at 5.3GHz)...
Heavy OC on the CPU and the two HD7970s will eat up that 1200W - I have a Seasonic X1250W and had to move the fans and pumps on a different PSU when started to push the two Matrix Platinums (3930k at 5.3GHz)...
Sorry, I should be more clear about that...
So, I had my 3930k at 5.3GHz (Vcore = 1.6V) and both Matrix HD7970 Platinums at 1300MHz on the GPU and 1850MHz on the VRAM (auto voltages)
So, I had my 3930k at 5.3GHz (Vcore = 1.6V) and both Matrix HD7970 Platinums at 1300MHz on the GPU and 1850MHz on the VRAM (auto voltages)
850W for 3xHD7970s?! Well, it may be possible... but not for me... 😄
You can't have overkill for the PSU, go for the biggest one you can get for your budget, that way, you have a solid base for anything else you want to do.
Because if you only need 900w and you have a 1300w PSU, you'll only use the 900w
But if you need 900w and you get a 1000w PSU, you have to take into account capacitor aging, which will give you a PSU that as it gets older, will pump out less watts 😉
Because if you only need 900w and you have a 1300w PSU, you'll only use the 900w
But if you need 900w and you get a 1000w PSU, you have to take into account capacitor aging, which will give you a PSU that as it gets older, will pump out less watts 😉
