Six Msi GTX 1070 One Power Supply

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Old_School305

Old_School305

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Old_School305
finally got the new power supply its a EVGA SuperNOVA 1200 P2 which support all 6 gpu's the problem i'm having now is the mobo turns on but the 6 gpu's wont am using the mobo GIGABYTE GA-H110-D3A which support's 6 gpu's there on riser adapter card's am using the riser victony one does anyone know if i need to setup something in the mobo BIOS to get theses cards working

Edit : got it working now it was a bad sata power cable
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derekullo

derekullo

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Don't forget that the Geforce 1070 cards should be ran at 65% of tdp and not full for mining due to being more energy efficient.

As mentioned on:

https://whattomine.com/
and
http://www.legitreviews.com/geforce-gtx-1070-ethereum-mining-small-tweaks-great-hashrate-low-power_195451

This reduces the maximum draw from 6 x 150 watts or 900 watts

To

6 x 150 x 0.65 or 585 watts

A 1200 watt power supply is more than enough for 585 watts in graphics cards + 150 (guessing) watts in everything else.


Having the correct plugs is important though.
 
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derekullo

derekullo

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"The 12VDC rail on Sata is rated for 45W whereas the 8-pin connector is rated for 150W
The GPU has no idea there's an adapter in there and that it's not cool to draw more than 45W. It'll destroy the PSU. Really, actually, blow it up. Do not even try!"

Copied that from another site, but he says it best.
https://linustechtips.com/main/topic/601435-sata-to-8-pin-connectors/

They also mention that it might be doable if you use a psu with a single rail mode, like that switch shows.

I would give Corsair a call before attempting.
 
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derekullo

derekullo

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This should have been said for the start.

If you start adding adapters to your rig to get stuff to work, each connector adds a small bit of resistance and wastes heat.

For a gaming computer nobody really cares.

But for a mining rig this added resistance and heat generation increases the amount of wattage the system uses.

Which reflects in higher running costs per kilowatt hour.


Some adapters like pci-e riser cables also increase resistance but they have an added benefit of increasing efficiency in other ways, such as not having to buy another computer/processor.

https://www.newegg.com/Product/Product.aspx?Item=9SIA72562E8994&cm_re=Pci-e_riser_cable-_-17Z-00AT-00003-_-Product


 
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Old_School305

Old_School305

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thanks derekullo i think i will give them a call and see cause if i run all six cards i don't have space for the cpu cable do you know if the cpu cable can be run from the peripheral & sata
 
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madmatt30

madmatt30

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^ no it can't , there's no sensible way to run 6 of 6+8 pin cards from that PSU.

You will have a spaghetti mess of 8 to twin 6 pin adapters which will only fit 5 cards at most anyway & you run the risk of melting cables & connectors .

This happened to a member a week or so ago with a seasonic x1250w.

As I said before you should have bought single 8 pin model cards.
 
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derekullo

derekullo

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Agreed.

Before spending $2400 on graphics cards make sure your power supply has all the correct connections for it.
 
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Old_School305

Old_School305

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madmatt30

madmatt30

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^ yes you can do that , its probably a more sensible proposition in all honesty.

All that cable does is jump the power on connectors so both psu's will power up with the case start button.

The issue is here is the card models (& the sheer number of them) that you picked.
The hx1200 could probably 'in theory' power what you're running because generally a 1070 will top out at around 170w .
Your issue is based solely round those cards needing 6+8 pins on every card when really the power requirements are far lower than that configuration allows.


 
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Old_School305

Old_School305

Reputable
Dec 8, 2015
15
0
4,520
finally got the new power supply its a EVGA SuperNOVA 1200 P2 which support all 6 gpu's the problem i'm having now is the mobo turns on but the 6 gpu's wont am using the mobo GIGABYTE GA-H110-D3A which support's 6 gpu's there on riser adapter card's am using the riser victony one does anyone know if i need to setup something in the mobo BIOS to get theses cards working

Edit : got it working now it was a bad sata power cable
 
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