! psu to power the farm ;)

[OldChap]

You may recall my 1 rad to cool them all Idea, well, how about 1 PSU to power them all???

I was just searching for detail on the seasonic platinum when I saw this;

http://www.ballicom.co.uk/laptops-de...w.p556006.html

or ebay.... http://www.ebay.co.uk/itm/HP-588603-...item27c664ac52

Which I am guessing is similar to this;

http://www.plugloadsolutions.com/psu...167_Report.pdf

So, how many 3770K rigs will this power??? I mean it is >92% efficient all the way to 100% load

[NKrader]

i ran my arima and sossaman on the sam x750 made me laugh.

im just poppin in to say hello lol.. im at work so i cant do the math, perhaps an edit later.

[masterg]

You may recall my 1 rad to cool them all Idea, well, how about 1 PSU to power them all???

I was just searching for detail on the seasonic platinum when I saw this;

http://www.ballicom.co.uk/laptops-de...w.p556006.html

Which I am guessing is similar to this;

http://www.plugloadsolutions.com/psu...167_Report.pdf

So, how many 3770K rigs will this power??? I mean it is >92% efficient all the way to 100% load

first link is Forbidden. my 3770k with only a H100 and 2x4gb of ram took 128w from the wall so maybe thats a baseline?

[pirogue]

You'd have a tough time plugging individual MBs into this. It's designed for a blade enclosure.

[D_A]

Give it a few years and we'll be getting pretty close. The Open Architecture group (which includes Google) has been pushing for a standard +12v power supply with all other mucking about handled on the motherboard. Apparently this design allows systems to be MUCH more power efficient, but it also opens up the possibility of running multiple systems directly from a dirty great big common 12v rail (I'm thinking backs of batteries like a stand alone solar installation but with no need for an inverter).
A little more info here: http://news.cnet.com/8301-1001_3-10209580-92.html

[OldChap]

Sure...but this is Xtreme crunching

[D_A]

I would have considered running two dozen systems from a set of 2"x1/4" 12v bus-bars mounted on the garage wall fed by a set of re-purposed truck batteries and solar/wind etc generating array pretty xtreme. This technology makes that possible.

[OldChap]

I hope that Idea comes to pass. 12v DC per battery is clean too.

[Otis11]

Give it a few years and we'll be getting pretty close. The Open Architecture group (which includes Google) has been pushing for a standard +12v power supply with all other mucking about handled on the motherboard. Apparently this design allows systems to be MUCH more power efficient, but it also opens up the possibility of running multiple systems directly from a dirty great big common 12v rail (I'm thinking backs of batteries like a stand alone solar installation but with no need for an inverter).
A little more info here: http://news.cnet.com/8301-1001_3-10209580-92.html

Look at the date on that article - April 1, 2009

I couldn't find the info to work it out, but the thing you have to be careful of running multiple systems on those big PSUs - what rail are you drawing from? On big PSUs, sometimes 80% of the power is delivered through the 12V rails, yet the cpu runs on 3.3v and 5v, the hdd on 5v and the fans on 5v... A 750W psu may only be able to deliver 400W on those rails... and getting a bigger PSU doesn't normally gain you much headroom.

Sorry to be a spoil sport... just don't want anyone killing hardware.

[D_A]

Look at the date on that article - April 1, 2009

I couldn't find the info to work it out, but the thing you have to be careful of running multiple systems on those big PSUs - what rail are you drawing from? On big PSUs, sometimes 80% of the power is delivered through the 12V rails, yet the cpu runs on 3.3v and 5v, the hdd on 5v and the fans on 5v... A 750W psu may only be able to deliver 400W on those rails... and getting a bigger PSU doesn't normally gain you much headroom.

Sorry to be a spoil sport... just don't want anyone killing hardware.

Better read my post again. The PSUs and boards I'm talking about DON'T HAVE 3.3v, +5v, -5v or even -12v rails. They're +12v ONLY. I'm not suggesting people should jam car batteries onto their current motherboards, that would be asinine! I'm mentioning that it will be possible at some point with the right hardware to run scaled up 12v DC distribution for local crunching farms. The date of the article is also irrelevant in this case as it is given only for illustrative purposes and for a "little more information".

[[XC] Oj101]

Also, CPUs have been on the 12v rail for as long as I care to remember

[D_A]

I remember them being on the 3.3v rail, but then I'm old and XTs went out of date a long time ago.

The point of the exercise being that EVERYTHING could run on a single 12v supply rather than a +12 -12 +5 -5 and +3.3 all in one plug with additional +12 connections as required as things are now. Those Google servers only have a +5v output for the HDDs.

[[XC] Oj101]

I was replying to this:

yet the cpu runs on 3.3v and 5v, the hdd on 5v and the fans on 5v...

[D_A]

I was replying to this:

Replying to (and correcting yourself) like that is a little confusing for us grey-beards.

[[XC] Oj101]

By starting with "Also" I was implying that I was adding to your post, I guess that didn't carry too well

[D_A]

It's all good

[Otis11]

Better read my post again. The PSUs and boards I'm talking about DON'T HAVE 3.3v, +5v, -5v or even -12v rails. They're +12v ONLY. I'm not suggesting people should jam car batteries onto their current motherboards, that would be asinine! I'm mentioning that it will be possible at some point with the right hardware to run scaled up 12v DC distribution for local crunching farms. The date of the article is also irrelevant in this case as it is given only for illustrative purposes and for a "little more information".

The reason I mentioned the date: 1st April 2009 is that it's April Fools. That article isn't real, it was a prank.

They're pushing to move the voltages down, not up. I'd be surprised if the CPU ever went back above 5V... unless intel decides to put the VRM inside the IHS.

And OJ - idk where you're looking, but i'm pretty sure every cpu i've ever owned has been 5V or less... but then again I was born in the 90s...

[[XC] Oj101]

Every CPU for the last decade or more has been powered by the 12v rail. Going back to the 90s, yes they were indeed on the 3.3 or 5v rail, but since the early 2000s it's been 12v rail.

If my memory serves me correctly (it's 01:30 AM and I'm not going to start Googling now ), the original AT spec had the CPU powered from the 5v rail (there wasn't a 3.3v rail back then), and since the ATX-12V (I think that's what it's called) standard introduced with the Pentium 4 it has been moved over to the 12v rail. Any system with a 4- or 8-pin CPU power connector is drawing CPU power from the 12v rail.

[D_A]

http://upsonnet.com/Articles/Learnin...PS-Design.html

http://gigaom.com/2008/12/29/how-goo...server-design/

http://itknowledgeexchange.techtarge...server-rumors/

http://hardware.slashdot.org/story/1...-rack-standard

Yeah, not a prank. 12v servers are real. Not everything published on April 1 is automatically a prank.

As for 12v CPUs, I think that confusion comes from the extra 12v lines that feed the VRegs that eventually feed the CPU.