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16V/40A power supply options?

post #1 of 60
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I'm planning for my next upgrade and looking for recommendations for a power supply that can put out 40A at 16V. Right now I'm looking at a BK Precision 1900 bench supply. Voltage adjustment and remote switching are nice to have but not absolutely necessary.

This is going to be to drive a TEC1-12740 in my 6700K box
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post #2 of 60
Meanwell
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post #3 of 60
Thread Starter 
Quote:
Originally Posted by billbartuska View Post

Meanwell
*facepalm* I've got 2 mean well 12v 320w supplies within arms reach and I didn't even think about that. Thanks... RSP-750-15 looks like it would work and about half the price of the bench supply, although less control but it would fit nicely in my case. Decisions, decisions..
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post #4 of 60
Thread Starter 
I just bit the bullet and ordered the meanwell. Thanks again billbartuska thumb.gif
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post #5 of 60
Wow, so much goodness from a single word post!!!!!!!!!!!

Glad to help, the little I did.
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post #6 of 60
wow that's a serious TEC, what voltage you actually going to run it at? your heat load will be insane, the power consumption of the TEC at 12v is ~420w. I got that by 12v x 35a with Qc of ~160w at 30*c dT on this data sheet if it is similar to your TEC. http://www.everredtronics.com/files/TEC1-12740_62x62x4.5mm.pdf

so you would have enough Qc to keep your cold plate on your IHS at 30*c below the TEC hotside temp with your CPU heavily overclocked, but with ~420w + ~160w from the TEC and the CPU that's a serious heat load to move. Are you water cooling the hot side of the TEC and mounting it direct die? That's a hella big amount of heat to move with a single waterblock. Or you got other plans for this thing?

I thought I was crazy running a 12724 TEC at 12v with ~218w power consumption. yours is almost double the power from the TEC, you going to control this thing with direct DC? that meanwell RSP750-15 can only be run down to 6v which I guess would be ok still. 6v x ~17.5a with Qc of ~80w at 30*c dT. heat load is ~105w + CPU heat load, be nice and efficient and chilled for most of the time when just browsing on the net etc, gonna get toasty when you push above 75% CPU load though and you have to up the volts/amps to the TEC to keep that 30*c dT.

what sort of delta are you looking to achieve from the hot to cold side of the TEC? and what delta above ambient do you want to keep your hot side of your TEC at?

8v x ~23a with 160w Qc at 20*c dT might be a nice sweet spot for that TEC. TEC power consumption of ~184w and up to 160w Qc at 20*c dT, be better than straight water cooling thats for sure, should be able to keep the TEC hot side with that sort of heat load about 5-10*c above ambient so you'd be 10-15*c better than water cooling at 100% load, maybe even more.

I'm actually really keen to see what you do with this and see how this performs as it will be a beast direct die chiller if you can move that heat load, might have to find a bigger TEC myself hahah biggrin.gif
Edited by LiamG6 - 11/3/15 at 4:22am
post #7 of 60
Thread Starter 
Quote:
Originally Posted by LiamG6 View Post

wow that's a serious TEC, what voltage you actually going to run it at? your heat load will be insane, the power consumption of the TEC at 12v is ~420w. I got that by 12v x 35a with Qc of ~160w at 30*c dT on this data sheet if it is similar to your TEC. http://www.everredtronics.com/files/TEC1-12740_62x62x4.5mm.pdf

so you would have enough Qc to keep your cold plate on your IHS at 30*c below the TEC hotside temp with your CPU heavily overclocked, but with ~420w + ~160w from the TEC and the CPU that's a serious heat load to move. Are you water cooling the hot side of the TEC and mounting it direct die? That's a hella big amount of heat to move with a single waterblock. Or you got other plans for this thing?

I thought I was crazy running a 12724 TEC at 12v with ~218w power consumption. yours is almost double the power from the TEC, you going to control this thing with direct DC? that meanwell RSP750-15 can only be run down to 6v which I guess would be ok still. 6v x ~17.5a with Qc of ~80w at 30*c dT. heat load is ~105w + CPU heat load, be nice and efficient and chilled for most of the time when just browsing on the net etc, gonna get toasty when you push above 75% CPU load though and you have to up the volts/amps to the TEC to keep that 30*c dT.

what sort of delta are you looking to achieve from the hot to cold side of the TEC? and what delta above ambient do you want to keep your hot side of your TEC at?

8v x ~23a with 160w Qc at 20*c dT might be a nice sweet spot for that TEC. TEC power consumption of ~184w and up to 160w Qc at 20*c dT, be better than straight water cooling thats for sure, should be able to keep the TEC hot side with that sort of heat load about 5-10*c above ambient so you'd be 10-15*c better than water cooling at 100% load, maybe even more.

I'm actually really keen to see what you do with this and see how this performs as it will be a beast direct die chiller if you can move that heat load, might have to find a bigger TEC myself hahah biggrin.gif

Yeah, it's the biggest TEC I've played with so far, and the one linked in your datasheet looks like the one. I'm planning on pushing it all the way to 16V/40A - if the radiator will move enough heat - in a direct die configuration. I'm just waiting for the water block to come in now (this one). The power supply arrived last week and I have it mounted in the case, and also I replaced the two 40mm fans with a single top mount 120mm to increase airflow and reduce noise (the stock fans sound like jet turbines lol). The rest of the water loop is a Swiftech MCP655 pump (317 gph) and EK-Coolstream PE 360 radiator with Panaflo M1A fans (86.5 cfm) in push configuration.

It's hard to predict results but my current TEC is somewhere around 320w at 16V (not sure the model number but I know it was 232w at 12v, was a 50mm salvaged from a Swiftech TEC water block), my temp range is just below 0*c idle and climbs up to ~40*c under sustained load (Skylake 6700K@4.8ghz, 1.456 vcore, LLC level 6) and I would be very happy if I could go -20*c under that. -30*c is certainly a possibility but something tells me that I'll have to pull back on the voltages though if my water temp gets out of control as the pump is only rated for 60*c, and as it stands now I'm in the mid 40's as measured on the radiator inlet. The cold side is mid 30's, so I have another 25*c operating range before I'm really in danger of running water that hot to the pump.

And to answer your last part, I'm trying to push the TEC as far as it will go. If keeping the water cool is a problem I'm just going to add more radiators. It's going to work at 100% one way or another, even if my radiator has to work at 120% biggrin.gif
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negaren
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post #8 of 60
I think it's more an issue of the water block being able to move the heat and the water being able to carry so much heat away through such a small surface area, it's 62x62mm fair enough but that is some seriously high heat density. I'm gonna go out on a limb n say you'll be moving 600-800w through that block. I think you'll need at least a 480rad with high speed fans, you will be able to dissipate the heat from the loop no worries if you had 2 480 rads. I'm just thinking of how much heat will be pumped through that block and how that will affect the TECs hot side temp, if it is 10-15*c above ambient you are losing half of the delta from the tec, so like 15-20*c below ambient. I guess that's enough though to be much better than water cooling.

However I see you bought ultrasonics last 62mm block (I wanted to buy it haha but too $$$ for Aussie dollar) it looks like a really awesome TEC block so I think you'll be able to shift that heat load after all. I still wouldn't run that TEC above 12v 24/7 but you gotta at least test it at 16v to see what she can do ;-) with the 360rad I think you gonna run into hot side temp issues though.

I think you'll see minus 20*c temps in idle at best. Maybe 0*c at load. But if say more like 10-20*c core temps at load.

I'd be happy to be proved wrong though. Beast setup either way. Get more rads though. I just bought an old hardware labs alpha extreme III rad and some 3000rpm furious vardars to add to my other 360mm of rads to keep my hot side under control with my 350w heat load haha.

Anyway, do it, in the name of science hahaha. I'm jealous of that tec block man
post #9 of 60
Thread Starter 
Quote:
Originally Posted by LiamG6 View Post

I think it's more an issue of the water block being able to move the heat and the water being able to carry so much heat away through such a small surface area, it's 62x62mm fair enough but that is some seriously high heat density. I'm gonna go out on a limb n say you'll be moving 600-800w through that block. I think you'll need at least a 480rad with high speed fans, you will be able to dissipate the heat from the loop no worries if you had 2 480 rads. I'm just thinking of how much heat will be pumped through that block and how that will affect the TECs hot side temp, if it is 10-15*c above ambient you are losing half of the delta from the tec, so like 15-20*c below ambient. I guess that's enough though to be much better than water cooling.

However I see you bought ultrasonics last 62mm block (I wanted to buy it haha but too $$$ for Aussie dollar) it looks like a really awesome TEC block so I think you'll be able to shift that heat load after all. I still wouldn't run that TEC above 12v 24/7 but you gotta at least test it at 16v to see what she can do ;-) with the 360rad I think you gonna run into hot side temp issues though.

I think you'll see minus 20*c temps in idle at best. Maybe 0*c at load. But if say more like 10-20*c core temps at load.

I'd be happy to be proved wrong though. Beast setup either way. Get more rads though. I just bought an old hardware labs alpha extreme III rad and some 3000rpm furious vardars to add to my other 360mm of rads to keep my hot side under control with my 350w heat load haha.

Anyway, do it, in the name of science hahaha. I'm jealous of that tec block man

Good point about the heat transfer of the block, that's something I didn't consider. I'll certainly keep an eye on it or maybe I'll throw in a few probes while I have it taken apart. I'm also considering throwing my inline water temp sensors back in even though they look horrible and the fittings are less than ideal. Just thinking that it would be a good idea to keep an eye on that instead of having to constantly probe the radiator.

My backup plan for the radiator is to first try swapping the EK PE triple (38mm depth, link) for a XE triple (60mm depth, link) and upgrading the fans to the 3k Vardars (107cfm, link), and if that doesn't work I'll have to find somewhere to mount the PE as well and run them both. I'm hoping that it doesn't come down to that but this will be a great test for the PE series radiator. I agree with your estimates, I'm thinking there will be around 860w of heat - 640w from the TEC plus whatever it's moving, and I'm guessing it will be around 150-200w under load.

Thanks a lot for the comments and feedback by the way. I'll be sure to start a new thread in the TEC forum once I receive the block and get it all put together thumb.gif
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negaren
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post #10 of 60
no worries, I'm always keen to discuss anything TEC and I like an ambitious project biggrin.gif I'm hoping to see some really nice deltas across that TEC as its crazy high wattage but man you're going to have to tame that beast haha.

I've been spamming other peoples threads with my own TEC build stuff for way too long, I gotta pull my finger out and make my own thread soon. Waiting for a few parts to come in to complete my upgrades and some additions.
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