Mother Mine - Extreme Mining Setup

Craterloads said:
Is it less stressful on the electric / fusebox if you spread out systems around the house?

I've got similar setups to wndsr, but have my rigs 1 per room?
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Your house will only have 2 ring circuits, one upstairs and one downstairs. If you have them all plugged in in separate rooms on one floor, they are essentially all off the one circuit.

Are you able to tell us how much one rig pulls in terms of watts?
 
String said:
Your house will only have 2 ring circuits, one upstairs and one downstairs. If you have them all plugged in in separate rooms on one floor, they are essentially all off the one circuit.

Are you able to tell us how much one rig pulls in terms of watts?
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All over the house on different floors, 4 floors.

6 rigs total

1050w + 500w rig - cellar
500w rig - 1st floor
1050w rig - 2nd floor
2 x 1050w rigs - 3rd floor

Using belkin power consumption thing to measure draw
 
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Remove the competitor link mate, made the same mistake myself!

4 floors is not an average house, and I can only assume you have a separate circuit on each floor? Having a maximum 2KW load on each circuit isn't a problem as far as I can see, however I haven't actually looked at your set up so normal disclaimer applies!
 
String said:
Also, there is no way I would advise utilising a single ring main for multiple rigs. Each rig will draw close to the 13A rating that a socket outlet can provide in terms of current carrying capacity. Each rig should be serviced by a 16A circuit breaker in garage consumer unit, 2.5mm radial to fused (13A) double pole switch, which will provide supply to a twin socket outlet. Both PSU's can then be fed from the socket. This would obviously have to be multiplied by the number of rigs. The actual cost increase of doing it this way as opposed to a single ring main is really quite low.
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1300W PSU's (which is what most of these 5 GPU rigs are running) will never pull 13A long term. At most I'd expect 7A, and most likely less, as that's based on full 1300W load, 80% efficient and 240V.

There's also the fact I doubt they're pulling full load anyway. My rig with a pair of 270's should be pulling near on 550W from the PSU, allowing for inefficiency that's over 650W from the plug. I'm actually seeing nothing over 400w from the plug.
 
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abbotsmike said:
1300W PSU's (which is what most of these 5 GPU rigs are running) will never pull 13A long term. At most I'd expect 7A, and most likely less, as that's based on full 1300W load, 80% efficient and 240V.

There's also the fact I doubt they're pulling full load anyway. My rig with a pair of 270's should be pulling near on 550W from the PSU, allowing for inefficiency that's over 650W from the plug. I'm actually seeing nothing over 400w from the plug.
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The guy was talking about 6 GPU's per rig, so that will sit at 7 or 8 amps.

The cost difference incurred by doing it the way I have suggested as opposed to a single ring main is roughly £20 per rig (materials). As you point out, one rig could be pulling 7 Amp which doesn't sound a lot in itself, but if you multiply that by 5 rigs then that's 35A on a 32A ring main. Remeber ring mains are designed for occasional use of lamps, hair dryers etc.. not 24/7 full load operation.

The added benefit of cabling them individually is that if one of the circuit breakers trips, you've only taken out 1 rig as opposed to them all. Bear in mind we're talking about a garage here, so individual cable versus single ring main would be a difference of 10 metres of cable or thereabouts in total, again not a lot of bucks involved.
 
So tonight my Super Flower 1300W power supply made itself heard...


Very disappointing as I was previously saying how good it was. Only a month old so regardless of load, I wouldn't expect it to die so quickly.
 
wndsr said:
So tonight my Super Flower 1300W power supply made itself heard...

<snip>

Very disappointing as I was previously saying how good it was. Only a month old so regardless of load, I wouldn't expect it to die so quickly.
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Is that the 1300W 80-Plus Gold unit? Didn't someone else have the same problem (squealing fan) with that model too?
 
Today I decided that rather than having the fans just blowing around the room like there's no tomorrow, I would position them behind a rig to see the difference in temperatures.

They are laid out like this, where the red box is the mine. The second photo is the temperatures before putting the fan behind them and the third are the new temperatures. I am very happy with the results here and have no hesitations leaving the cards at around 70 degrees now.

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Still need to get a thermometer... I will do it soon!

Won't be having a new PSU until next week it seems as OcUK won't/can't ship a replacement to me until the SuperFlower is received which, given as it's a Friday won't be until early next week.
 
wndsr, small piece of advice to help with the cooling, try and find someway of forcing that air through the frame, cheap plastic sides and top will help. If you can get the air to be shifted from the bottom up then out the side in a sort of Z direction.
 
Cooling so far has been very good, no cards are going over 75 now. The ambient temperature is obviously still a problem, but there isn't much I can do with that yet. I am considering knocking a couple of air bricks out to fit extractor fans but have no idea how possible this actually is.
 
Just do it in corner of the room on top and add some small slow moving fan there.
If you make a 10"x10" hole, you can even install a 230mm fan and power it from one of your rigs.
Hot air goes up, so this should do the trick ( might need to monitor this tho, maybe one small vent won't be enough ).
 
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