In need of massive PSU

[MLG JFK]

Hey all. I'm currently in a dilemma. A good friend of mine and myself are working on a big project to make an massive rig.  The specs are 2x Xeon e5 4650 v2's , 32gb of Ecc ram @ 1866 Mhz,  2 Cpu water coolers,  4 gtx 1080ti SC2 Hybrids oc'ed (2 gpu's per person), a gtx 970 boot card,  4 hard drives, 2 ssd's, 20 rgb fans, 12 rgb strips for 2 hue +'s , fan moniters, blue ray drives, and 2 keyboards and mice. The total wattage at peak on the psu calculator came out to 1878 watts recommended. with a peak pull of 1828... We both own a Rosewill 1600 watt psu, so were were contemplating using 2 of them;however, we're not so sure how that would work.  What should we do? I know that Super Flower makes a 2000w psu but we live in the US and we don't know how to get one. and suggestions would be appreciated.

[Jurrunio]

You can short the main ATX cable in order to use 2 PSU in one system (assuming that the mobo only has 1 main ATX connector). I'm not sure how to do it exactly, but there are tutorials in the internet.

 

Of course you will need a case that can hold 2 PSUs.

[Crunchy Dragon]

I'd be more worried about the case being able to support 2 PSUs to be honest. I found a thread here http://tinyurl.com/yaw7lymz mentioning a dual 20+4 pin to single 20+4 pin adapter which would probably work. I would imagine it's not too hard to do once you connect it to the motherboard.

[MLG JFK]

Yeah I've heard of that.  Is it safe and all to have 2 psu's?

[MLG JFK]

The 

2 minutes ago, Jurrunio said:

You can short the main ATX cable in order to use 2 PSU in one system (assuming that the mobo only has 1 main ATX connector). I'm not sure how to do it exactly, but there are tutorials in the internet.

 

Of course you will need a case that can hold 2 PSUs.

The case we have right now is this: http://www.mountainmods.com/ascension-duality-mirror-black-powder-coat-original-top-p-463

[Crunchy Dragon]

1 minute ago, MLG JFK said:

Yeah I've heard of that.  Is it safe and all to have 2 psu's?

Moderately. As long as they stay cool enough and have good airflow I'd go so far as to assume that it would all work fine. If you're looking for a case that'll support all of this, the Obsidian 900D from Corsair will work for ya.

[TheGleaner]

2 minutes ago, MLG JFK said:

 Is it safe and all to have 2 psu's?

I've seen rigs work with 2, no word on how long they ran for, or how well though.

 

[xentropa]

Should be fine to have 2 PSUs.  On the PSU 20/24 pin connector there is a green pin.  Short that to ground to turn it on.

 

Problem is that will be make the psu permanently ON and you can't control it by the motherboard.  There are special connectors though to link two psus to a single board.

[PETRGangKing]

6 minutes ago, Jurrunio said:

You can short the main ATX cable in order to use 2 PSU in one system (assuming that the mobo only has 1 main ATX connector). I'm not sure how to do it exactly, but there are tutorials in the internet.

 

Of course you will need a case that can hold 2 PSUs.

What this guy said. If you're not comfortable shorting it yourself, you can get an ATX jumper on Amazon for a couple bucks.

[MLG JFK]

If I paid a hefty premium to Super FLower, would they consider shipping a 2000w psu to me? Or do they not ship to the US period?

[Jurrunio]

6 minutes ago, MLG JFK said:

If I paid a hefty premium to Super FLower, would they consider shipping a 2000w psu to me? Or do they not ship to the US period?

Havent seen companies reject money so far

[AlwaysFSX]

15 minutes ago, Jurrunio said:

You can short the main ATX cable in order to use 2 PSU in one system (assuming that the mobo only has 1 main ATX connector). I'm not sure how to do it exactly, but there are tutorials in the internet.

 

Of course you will need a case that can hold 2 PSUs.

You're supposed to use something similar to this so you don't set something on fire..

 

http://www.ebay.com/itm/Stable-24Pin-Dual-PSU-ATX-Power-Supply-Adaptor-Cable-Connector-For-Mining/282568412399

[Droidbot]

get a Phanteks Power Combo or something

[Lord Nicoll]

29 minutes ago, MLG JFK said:

Yeah I've heard of that.  Is it safe and all to have 2 psu's?

My dual Xeon rack server has two PSUs, some have 4. It's very safe, safer than one in fact. 

[Crunchy Dragon]

4 minutes ago, Lord Nicoll said:

My dual Xeon rack server has two PSUs, some have 4. It's very safe, safer than one in fact. 

I'm pretty sure he doesn't have a server rack(I could be very wrong however).

[Lord Nicoll]

2 minutes ago, Crunchy Dragon said:

I'm pretty sure he doesn't have a server rack(I could be very wrong however).

If he wants a kind of VM box for VM gaming (that seems to be what he wants, idk if you can SLI through a VM though) then a rack chassis would probably be better. 5 full size GPUs isn't something any normal board will support

[Stefan Payne]

13 hours ago, MLG JFK said:

The total wattage at peak on the psu calculator came out to 1878 watts recommended. with a peak pull of 1828...

Yes, when CPU and GPUs are at 100% load (wich rarely happens) _AND_ all drives start spinning at the same times.

Both conditions have to be met to draw this 1878W wich is clearly impossible, especially for a longer period of time.

So the fact is that the PSU calculators are just utter nonsense and far from reality.

 

I'd suggest to just use one PSU and something like a Kill-A-Watt Thingy.

 

If your rig really uses 1878W wich equals to around 17A@110VAC. So with a 15Amps Breaker (and possibly other things on it as well), it will trip from time to time. So even two PSU won't help at all.

And it's not desirable if it can be avoided for various reasons.

 

So no, you don't need that much. Especially if you don't do overclocking (wich can ruin the GPU in a Year or less accoding to nVIDIA).

[System Error Message]

How about this: http://www.preenpower.com/productsb-2.html

Is this massive enough for you?