is corsair ax1200 enough

[kahless1979]

So I picked up a 3rd 780Ti off ebay for very cheap since people are getting rid of them for the 980's. Here is my question:

Is a Corsair AX1200 PSU enough for this:
3-Way 780Ti SLI +100mhz core, +200mhz memory
4930K 4.5ghz
Rampage IV black edition
32 gigs 4X8Dimm ram stick
Corsair H100i cooler
2x SSD
1x 7200 HD
many miscellaneous fans in Coolermaster Haf-X case

I've tried online PSU calculators and the numbers are all over the place. They have ranged from 1000 watts to 3000 watts. I have had my ax1200 for about 3 years. Its been running two 780tis just fine.

 

[JDG1980]

According to TechPowerUp's review, the GTX 780 Ti has a maximum tested power consumption of 260 watts. This is for a Furmark-style test, not normal gaming (Crysis 3 averaged 229 watts). So the three video cards should require a maximum of 780 watts.

That leaves 420 watts for the rest of the system. According to AnandTech's review of Ivy Bridge-E, the tested system power consumption under load for the i7-4960X was 210 watts. You're using an i7-4930K, which should be less power-hungry under default settings, but are overclocking it which will increase the power consumption. Keep in mind that the 210W figure includes not only the CPU, motherboard, and RAM, but also an SSD and even a discrete video card (albeit under idle, not stress) since this platform doesn't have any integrated video.

Let's assume your board and overclocked chip are a bit more power-hungry than that, and consumes 270W maximum. (I doubt it's that much, but we want at least some margin of error). That still adds up to "only" 1050 watts (270W + 3x 260W). You then have 150W of additional headroom for the fans, H100i pump, and mechanical HDDs - which is plenty. Keep in mind that the Corsair AX1200 PSU is a very well designed and built device; it's not as if a brief spike to 1201W would blow it out.

TL;DR: you'll be fine.

 

[guskline]

Do you have a Kill-O- meter? I bought one and it's worth the $.
You have a fine PSU so measuring the power draw with something like Aida64 stability test on all components checked will show total watts.

I have 2 R9-290s in CF watercooled and clocked at 1070 core/1375mem max power, 2 D5 pumps, a 3930k @ 4.6 ghz etc and I pulled @940 W

My PC P&C 1200 W was fine. I bet you are not pulling more than@800W so I would try 3 gpus.

Buy the Kill-O-meter

 

[FiLeZz]

I killed 2 ax1200 power supplies.. and at the time I had 3x780 and a 3930k oced.. I would pull between 1000-1100 at the wall in gaming..

I would recommend 1300watts or more..