Server PSU or ATX PSU?

[zij]

question for those running those HP "1200W" power supplies (that are actually only 900W at 120vac),

how hard are you pushing them?

I only have three GTX1070's on one right now and it's already hot as hell, can it actually handle 900W?

to answer OP's question about switching, you can get fancy and rig up something to switch them on at the same time, or do what I do: just switch on the GPU's a second before the main system

I've read that you can get PICO PSU - something like https://www.amazon.co.uk/d/Power-Supplies/Mini-Box-picoPSU-160-XT-Power-Mini-ITX-Supply/B005TWE6B8 which I guess somehow you connect up to the breakout board - and then the server PSU powers everything?  Anyone use this setup - and know where to source in Europe/UK?

Final question - do all server PSUs have the same connectors where the breakout board connects - or does each manufacturer (Dell, HP etc) have different connector?

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[stef_stef]

Does anyone know where I can buy some server PSU's along with the breakout boards and ITX connector in Europe?

[gaalx01]

Only ATX!

[Bimmber]

Does anyone know where I can buy some breakout boards in Europe?

https://www.ebay.co.uk/itm/Breakout-Board-for-HP-Server-Power-Supplies-GPU-ASIC-Mining-12-6Pin-PCIe-Slots/152819403670?hash=item2394bf0b96:g:BmMAAOSwbw1aKJ-X

[Sevarchik]

Final question - do all server PSUs have the same connectors where the breakout board connects - or does each manufacturer (Dell, HP etc) have different connector?

There is many many different connectors.
Main difference from server and ATX psu - server PSU have only +12V output

[Bimmber]

Why do only HP server power supplies are being user on mining? Is that because they have a slot where to attached breakout board?

[lunobird]

Also evga t2 titanium is rated at 96 percent efficiency at 220volt . Server platinum is 94 percent.

[StigHelmer]

Can someone clarify the response to the OP's question about having one PSU for the motherboard and the Server PSU dedicated to PCIE adapters for the cards?

I read the reply where someone said they turn on the server pSU 1 second before the main power, but I was wondering if there were opinions on this. I have read other people online say not to do that, but they didn't display a reason why/how it is dangerous.

Thanks

[gwestcot]

Can someone clarify the response to the OP's question about having one PSU for the motherboard and the Server PSU dedicated to PCIE adapters for the cards?

I read the reply where someone said they turn on the server pSU 1 second before the main power, but I was wondering if there were opinions on this. I have read other people online say not to do that, but they didn't display a reason why/how it is dangerous.

Thanks

I don't use server PSU's but I have them turn on at the same time by having a dual PSU cord. The one below is good for 2000W or so.

https://www.amazon.com/Leboo-Motherboard-Mainboard-Connector-Extension/dp/B075VRMQ55/ref=sr_1_1_sspa?ie=UTF8&qid=1516760109&sr=8-1-spons&keywords=dual+PSU+cable&psc=1

[CryptoWatcher420]

atx psu are better they offer surge protection, they are also more plug and play and less hassles, but they cost more, personally i would go with atx, saving $200 is not that important now with the current profit, you can roi in the same time

roi in the same time, no that's not true, more cost = longer roi, less cost = shorter roi. server psu is considerably less hassle than you might think, you used a server psu with breakout board at all? if you had of before youd know its much less cables to deal with, there only a hassle for someone who doesn't know squat

[StigHelmer]

Can someone clarify the response to the OP's question about having one PSU for the motherboard and the Server PSU dedicated to PCIE adapters for the cards?

I read the reply where someone said they turn on the server pSU 1 second before the main power, but I was wondering if there were opinions on this. I have read other people online say not to do that, but they didn't display a reason why/how it is dangerous.

Thanks

I don't use server PSU's but I have them turn on at the same time by having a dual PSU cord. The one below is good for 2000W or so.

https://www.amazon.com/Leboo-Motherboard-Mainboard-Connector-Extension/dp/B075VRMQ55/ref=sr_1_1_sspa?ie=UTF8&qid=1516760109&sr=8-1-spons&keywords=dual+PSU+cable&psc=1

That's exactly the cable I used when I hooked up one 350w (yes I know) and one 650w PSU to a rig with one 1080 and 1080ti and it killed one of the PSU's (I forgot which), I realize - the draw was too much and that 350w does not mean 350w is maximum draw.

Useful https://youtu.be/MPjj9EejrYg

[MagicSmoker]

Can someone clarify the response to the OP's question about having one PSU for the motherboard and the Server PSU dedicated to PCIE adapters for the cards?

I read the reply where someone said they turn on the server pSU 1 second before the main power, but I was wondering if there were opinions on this. I have read other people online say not to do that, but they didn't display a reason why/how it is dangerous.

Thanks

I have a 6 GPU rig with the mobo supplied by an ATX PSU and the PCIe power connectors on each card supplied by an HP server PSU. I leave the server PSU on all the time without issue. The only real requirement is that GPU power be present at the same time or before the mobo is turned on.

[gwestcot]

Can someone clarify the response to the OP's question about having one PSU for the motherboard and the Server PSU dedicated to PCIE adapters for the cards?

I read the reply where someone said they turn on the server pSU 1 second before the main power, but I was wondering if there were opinions on this. I have read other people online say not to do that, but they didn't display a reason why/how it is dangerous.

Thanks

I don't use server PSU's but I have them turn on at the same time by having a dual PSU cord. The one below is good for 2000W or so.

https://www.amazon.com/Leboo-Motherboard-Mainboard-Connector-Extension/dp/B075VRMQ55/ref=sr_1_1_sspa?ie=UTF8&qid=1516760109&sr=8-1-spons&keywords=dual+PSU+cable&psc=1

That's exactly the cable I used when I hooked up one 350w (yes I know) and one 650w PSU to a rig with one 1080 and 1080ti and it killed one of the PSU's (I forgot which), I realize - the draw was too much and that 350w does not mean 350w is maximum draw.

Useful https://youtu.be/MPjj9EejrYg

I have used it for 6x 1080 TI rigs and they have been running perfectly stable for months and months. This was done with a 1300W and a 1000W PSU. Maybe its a problem with your setup or that particular cable that you received.

[StigHelmer]

I just hooked up a rig with a 1000w ATX powersupply running 2 1080 ti's and another 1000w server powersupply with a breakoutboard connected to it and individual cables to each card and risers, powering an additional 2 1080 ti's.

I could maybe add another card, but 1080 ti's are such beasts I don't want to get too close to capacity.

I will post a photo of what I did, but very happy with the sever PSU's and in the future, will use a small PSU for the motherboard only and a server PSU for cards.

[MagicSmoker]

I think server PSUs are using for providing to GPU only (It looks). I saw breakout card on eBay, but there are no ATX 24pins on the board. How you guys connect those for operating together?

Oh fercryinoutloud - I answered this in post #32.

[Bimmber]

I think server PSUs are using for providing to GPU only (It looks). I saw breakout card on eBay, but there are no ATX 24pins on the board. How you guys connect those for operating together?

You use PICO to power mobo/ssd/cpu. PICO gets power from server PSU breakout board.

[smoolae]

I think server PSUs are using for providing to GPU only (It looks). I saw breakout card on eBay, but there are no ATX 24pins on the board. How you guys connect those for operating together?

You use PICO to power mobo/ssd/cpu. PICO gets power from server PSU breakout board.

Also, you can use 2 different PSUs - 1. is server PSU and the 2. is usual ATX PSU. I'm using server PSU to power my GPUs and ATX for MOBO+other low power components. Choose what fits best for you

[Bimmber]

I hate ATX psu`s, they are bulky, heavy, expensive. PICO is microscopic compared to ATX.

[smoolae]

I hate ATX psu`s, they are bulky, heavy, expensive. PICO is microscopic compared to ATX.

True that!

[MagicSmoker]

I hate ATX psu`s, they are bulky, heavy, expensive. PICO is microscopic compared to ATX.

Yeah, and it also blows up when overloaded and takes the mobo with it. No thanks.