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post #11 of 98
Possible question\concern

Are you planning to run from a single wall socket, if so what is the breaker rated at and is anything else looped into that circuit? I ran power for a large LAN party, 250-1200+ systems, many of times and it may be a problem once the other two systems are hooked up and also what else is in the circuit. Generally on a 20 amp breaker I would plan for 6 systems, but a normal gaming rig doesn't pull 100% load a 100% of the time like a boinc system does. You do save on a little power because of no monitors are hooked up to it though. I also can see if you have a power filter or UPS hooked up to it either and those will effect the power draw as well.

I will put this caveat out I really don't know anything about foreign power system so it could be irrelevant. I would still determine what outlets and items are pulling power from that breaker in order to avoid future shut downs just in case someone plugs in a blender for frozen cocktail party hour!
post #12 of 98
That's amazing and it looks fantastic!
 
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post #13 of 98
Thread Starter 
Quote:
Originally Posted by tommykl View Post

Possible question\concern
Are you planning to run from a single wall socket, if so what is the breaker rated at and is anything else looped into that circuit? I ran power for a large LAN party, 250-1200+ systems, many of times and it may be a problem once the other two systems are hooked up and also what else is in the circuit. Generally on a 20 amp breaker I would plan for 6 systems, but a normal gaming rig doesn't pull 100% load a 100% of the time like a boinc system does. You do save on a little power because of no monitors are hooked up to it though. I also can see if you have a power filter or UPS hooked up to it either and those will effect the power draw as well.
I will put this caveat out I really don't know anything about foreign power system so it could be irrelevant. I would still determine what outlets and items are pulling power from that breaker in order to avoid future shut downs just in case someone plugs in a blender for frozen cocktail party hour!

Yep have been thinking about this too, and NZ power is the same as Australia 240v AC @ 50Hz
this means that half the amps travel down the line compered to 110v AC @ 50Hz , I guess I'm expecting about 1000W at the moment + 1000W when the next unit comes on line.
so 2000W / 240 = 8.333A and with a 20A breaker
my sig rig is 1000W to so we are up to 12.4A now so still room on the 2.5mm wiring witch is good for about 25A constant load IMO wink.gif
but I do want to invest in back-up power supplies at some point? just not sure when is all thinking.gif
and to get things cleaned up has set me back a pretty penny or two, so not anytime in the near-future

Edit: 250-1200+ systems? that is a hole swag of units?
so that's 150W x 1200 units = 180,000W / 240v = 750A? or / 110v = 1636.36A? that is insane. . . . Nice. . . . thumb.gif
Edited by deegon - 7/22/12 at 2:12am
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post #14 of 98
110V. We do our power need calculation differently which also fluctuates depending on generation of hardware and trends, the prime example the switch over from CRT monitors to LCD monitors. What we do is based it on about 3 amps per person which may seem low when most modern system 450 watts at its peak. And that is important most games don't draw draw peak power at all times odds that all 6 people on the same circuit hitting their peak draw simultaneously is slim. So 1250 gamers would need at least 3750 amps, but that calculation doesn't factor in additional power needed for servers, 6-8 systems, depending on quality of the build, per 20amp, projectors, and a safety margin about 10%. So for a 1250 person event you generally want about 4000-4200 amps available. It has been a while since we had an event that since we generally have about 300+ gamer so closer to 1200amp mark now.

Back on Topic.

I would defiantly invest in high quality surge protector/suppressor that would the first thing I buy just so that random event won't kill 5 system in one go. I looks like you got something plugged into the socket, but I can't tell what. nor can I tell what all the systems are plugged into in the back of the server rack. Back up power as you mention that would be a pretty penny indeed if you wanted more than a few minutes of power.
post #15 of 98
Nice!

Really looking forward to seeing this evolve. Those 7970's will give you some awesome PPD, put them on DiRT and they will give you over 5M PPD total eek.gif


I wish I had a man cave, no room for one in our 350ft² apartment... frown.gif
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post #16 of 98
WOW!

biggrin.gif
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post #17 of 98
Update is demanded by thee
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post #18 of 98
Thread Starter 
Quote:
Originally Posted by goodtobeking View Post

Update is demanded by thee

sorry redface.gif but still waiting on parts to set things up tiredsmiley.gif been worken long hours and it's all most midnight now.
I'm going to pull apart one of the other units this weekend I think, and start setting up the new unit
The rest of the stuff is meant to turn up on the Monday or Tuesday so server-00 won't be down for long smile.gif
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post #19 of 98
I want that cabinet and I want it NOW drool.gif My dreams of a home-built Cray-equivalent have only grown with this build log!
post #20 of 98
Thread Starter 
Have made a YouTube video about the build, It's my first video and was nervous as hell LOL
I ran out of battery in the making of it rolleyes.gif but I'm goen to make another one soon. . . .

If you would like to watch it then go to the second OP

Quote:
Originally Posted by tommykl View Post

110V. We do our power need calculation differently which also fluctuates depending on generation of hardware and trends, the prime example the switch over from CRT monitors to LCD monitors. What we do is based it on about 3 amps per person which may seem low when most modern system 450 watts at its peak. And that is important most games don't draw draw peak power at all times odds that all 6 people on the same circuit hitting their peak draw simultaneously is slim. So 1250 gamers would need at least 3750 amps, but that calculation doesn't factor in additional power needed for servers, 6-8 systems, depending on quality of the build, per 20amp, projectors, and a safety margin about 10%. So for a 1250 person event you generally want about 4000-4200 amps available. It has been a while since we had an event that since we generally have about 300+ gamer so closer to 1200amp mark now.
Back on Topic.
I would defiantly invest in high quality surge protector/suppressor that would the first thing I buy just so that random event won't kill 5 system in one go. I looks like you got something plugged into the socket, but I can't tell what. nor can I tell what all the systems are plugged into in the back of the server rack.

was looking to buy a 2500~3000W UPS 6months ago but didn't go through with it in the end, and BOINC suspends it's self when it on batterys so would only need full power for a matter of 10seconds
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