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Lol, if I was you I hope the ambient temp is always fresh and the ceil is isolated a bit for noise, for co-workers.. And I hope for you you will don't have problems for the electricity. I think someone will have a great surprise when s/he will see the bill.

The temperature is not bad.  The hottest I have seen the GPUs get up to is 84c.  There is no noise what-so-ever.  I ran the power through the ceiling and plugged it into a storage closet across the building.  The only problem that I am having right now is that one of the cards seems to have gone out and I can't fix it without taking it down.  Also, the ceiling looks like it might cave in at some point.  I'm having a difficult time finding opportunities to work on this thing without anyone noticing.

lmao, that has to be the greatest thing I've seen in awhile.  I might have to try this myself.

What is that connector on those cards laying on top called and where could you get some? 

I have the connector on all 8 of the cards.  It is just a regular DVI to VGA adapter with resistors in them.  Why?  Well they are there to trick the computer into thinking that a monitor is plugged in.  Otherwise the cards don't show up in windows.  I use Logmein Free to remote into the computers to start / stop the servers.  They are set to turn on on power failure, so I can always restart them by unplugging them from the wall and plugging them back in.

Sorry, should have been more specific.  I was referring to the PCI-E connector. 

I used to do F@H on multiple cards, so I know those dummy plugs well.  I actually found you only need 1 resistor in either B or G (never tried R) on the VGA side.

Might look into an APC remote reboot/power thing if you're not able to easily reset the power yourself.

This is the 1x connector that I am using.  http://cgi.ebay.com/PCI-Express-Card-Extension-Cable-PCI-E-1X-Riser-Bitcoin-/260820187941?pt=LH_DefaultDomain_0&hash=item3cba183b25

Thanks for the link!  Lower priced than I expected.

Crazy crazy man  ;D

1) Yer gonna get fired (Not good in these economic times)
2) Hope you don't have a surprise fire inspection by the fire marshall, he'll have a field day
3) Sweet!  :-P
4) Get some wire from Home Depot (It's about as thick as the wire a hangar is made of) and add additional support to carry the load, having that fall on someone's head is bound to get you into double trouble.

LMAO crazy man

Would they fire you if they found this? As for the support issue you seem to be having why not screw some pvc pipes onto the bottom the the plywood and use them to spread the load out. Of course they would be hard to get up there, you would need to attach them once the rig was already up there, but its better than your roof collapsing.

1) I hope not!!
2) I would not have put it up in the ceiling if I thought there was a chance that it could burst into flames.  If it got too hot, I would assume that it would simply shut off.  I also used a very heavy gage extension cord for that reason.
3) Thanks!
4) I was actually thinking of doing that.  I was going to screw some wire into the plywood that the computers are mounted to and attempt to suspend it from the rafters above the drop ceiling.  Although it's harder than you might expect to accomplish all of this with the small amount of access space I have.

haha, brilliant. Reduces your outlay for electricity!

You should water cool it - silent and efficient..

You're nuts. I'm jealous.

pcie x1 riser?
i dont get it.
why not x16 riser?

where do you live?

lol DROP CEILING when it falls on someone just be like
"BITCH YOU JUST GOT DROPPED BY BITCOINS"

You dont get it because you dont understand how mining works, You only need pci-e x1 slots. It' is completetly uneccessary to use Pci-eX16 slots

Oh, these power hungry 5830s.
The geeky "will work for bandwidth" should be "will work for kilowatthours" nowadays...  ;D

Great BTC miner, but is a bit of a fire hazard dont you think?

This is awesome ... I love it !!  :D

I agree with the fire hazard comment

Yeah this is a fire hazard in both, the flaming and pink slip, senses of the word.

It is also really awesome.

You can't truly be awesome without risking it all.
If you disagree with this statement, it is because you are not awesome.

Carry on, you crazy bastard.

Id be worried about fire's as well.
Such as a rat gets up there chews cables shorts it out computer goes off rat dies.
Youv set it up to turn back on so it does, brings rat back to life and lights it on fire.
Flaming rat runs around spreading fire.

I couldn't say I didn't see this coming. :P

you can start a fire well before the cards will shut off. especially in a crawl space like that. can't you just steal electricity from a neighbor or something?

I would be worried about fire too; both direct (the hardware itself eventually bursting into flames) and indirect (the heat doesn't got much place to go and eventually accumulates enough to light up somthing up there)

How did you smuggle all that hardware into the office?

You all are starting to freak me out about the whole fire thing...

Can I haz your job after tomorrow?

Might not be a half bad idea to have a webcam up there along with it.  Or you could create some crazy thing with a smoke alarm that would trip a relay for the power source instead of sounding a piezo.

I don't think a fire would be a huge concern, just make sure everything is not running extremely hot and you're not pulling more amps than the PSU or extension cord can handle. 

A box fan might be good for pushing the hot air down further.

Or put it in a better box which would contain any fire if there was one and would keep any pests out.

I have a fan blowing over everything already.  I just logged in to the server and all of the cards are currently running at 74c.

Running cooler than my single 5870, so that's definitely a plus.

Good PSUs have short circuit protection, so if a trace were to arc over to another and start smoldering, either on the GPUs or the Mobo, the PSU should kick off and will continue to until the short is gone.  What make/model are the PSUs you're using?

This is crazy, you've got some balllssss

I love the fact you're retarded.

But for like $40 you could run it at home without the risk of fire, getting fired, or prison time if the fire kills someone.

Tough call. :P

+1

The worry isn't the PSU continuing to fuel a fire. It just takes a spark to possibly start a fire, especially since there appears to be wooden planks and beams, the dry heat from the rig would ensure the environment is perfect to encourage a fire. Pretty much like how hot dry summers make it easy for wild fires to start. And sawdust (or dust of any flammable material) are extremely combustible.

Thanks, Barney.

Raidmax 1000w

http://www.newegg.com/Product/Product.aspx?Item=N82E16817152044&Tpk=raidmax%201000

Each system draws just under 700w under full load.

When I mentioned fire hazard i meant more like running indoor power cables to a location inside the plenum of the building as well as the other computer hardware. If that stuff burns it could cause additional safety concerns (burned plastics, rubber...) and so on. It may release chemicals into the air ducts which would could cause health hazards to others in the building.

However very unlikely that this would happen and maybe its just my paranoia.

so you're sticking 2000 watts of heater in the ten-inch plenum of a cheaply-built office building in which you clearly (from the pics) do not occupy the top floor?

and the people in the office above you - which is an office, as floor plans are predictable - won't notice this and get freaked about it... why?

never mind the heat required to spontaneously combust any number of things in the plenum that you'll be heating to 85 C - like the various adhesives, and the wood itself after the fire-retardant chemicals it's infused with evaporate.

holy mother of god.

congratulations on winning the first ever time-shifted Darwin Award...

Yeah, other than the safety risks.... thats pretty freakin sweet LOL!

Looks to me like there's enough air volume in there to spread out the heat, as long as that fan keeps working. Still, you have to wonder if the people in the office above will notice the hot floor and prompt a visit from the HVAC folks!

Hey where are the pictures? I want to share these with a co-worker. the link just shows an ad for pc repair.