Wanted to be sure my PSU can handle the 780TI

Hardware PSU
1

I am going to upgrade to the 780ti from the gtx 660SC, I currently have the CORSAIR CX series CX600 600W psu. I read that the 780ti needs 42 amps on the 12v rail, mine says it is at 46 on the rail. I figured I would ask the people here if I will be alright, a 600W or greater psu is recommended for the new card. 

 

Any input is appreciated

2

You'll be fine with your existing psu.

3

Yes you will be fine. The PSU recommendations are always extremely exaggerated.

http://www.guru3d.com/articles_pages/geforce_gtx_780_ti_review,8.html

Here you can see that the card itself draws ~ 270W. The whole system doesn't even need 400W, so you actually have a lot of headroom.

4

Another piece of info for you to think of.

I have AX760i + i7-4770K @ 4.5 1.4v + stock 780 Ti.

I was running LinX + MSI Kombustor at the same time and the maximum power output to the PSU was around 510 watts (monitored in Corsair Link); the CPU itself is 170 watts TDP at that time (monitored in RealTemp | TI)

But that's the peak power output with GPU "Boosted" very much; In a couple of minutes running the same stress test power draw drops to around 450 watts.

So If the CX600 can give ~550 watts on the 12v rail it will handle an overclocked Haswell and 780 Ti well. In my system during gaming I think power draw is much lower, about 350 watts, which would fall to the safe 58% of what your PSU could handle (and that's especially good, cause PSUs best efficiency is around 50%)

So unless you have a greatly overclocked 8-core AMD CPU (like 5 GHz) I think you'll be fine with CX600