[Xris]

I'm not looking for sub zero temps only sub ambient. I will be trying to overclock a pentium d 820 from 2.8 Ghz to 3.2 Ghz.

Everything I read says pelts are hard to set up and you'll need an extra power supply. I currently have a 500w for the rig I'm building.

So, what am I looking at? Is it possible to have everything enclosed into my case? I have ordered fairly large case, a thermaltake armor.

I'm just trying to get a little more out of a water cooling set-up.

[crimedog]

waterblock with coldplate, mounting hardware, pelt, power supply for pelt, thermal paste, neoprene, dielectric grease, tubing, radiator, fan(s), pump, relay*, hose clamps*, water additive*. * indicates optional.

do not try to run a 226w pelt off your psu. if it's only an 80w 12v or 172w @ 12v then you can but it'll push your psu pretty hard. the most commonly used psu for pelts is the meanwell s-320-12 and it can be found used for about $60.

[Xris]

how big of a radiator are we talking about to cool down a 226w? would a heater core with two 120mm fans suffice? could I mount the rad internally, or would it raise the case temps too high?

I'm not trying to go cheap, I just don't want some huge heater core outside of my comp.

[crimedog]

i would run at least a single 120mm rad with a good fan... but i always run dual heatercores with two 120mms. keep in mind you're putting tec heat, cpu heat, and pump heat into loop.

[Xris]

Okay, my case has mounting options for placing a water resevoir for a traditional water cooling setup. I may be able to mount the radiator there. It also has holes to route water lines through.

Would I be good with a dual 120mm fan set up on a heater core placed on the side of the case? Could I add a pelt for the GPU? Would 80w be enough for that and would I then need a third power supply?

[Xris]

How does this setup sound?
1 '77 bonneville heater core mounted internally with 2 high flow 120mm fans
1 eheim 1250 pump
1 primochill dual 5.25" res
1 172 watt pelt to cool pentium d 820
waterblock and coldplate the pelt
meanwell power supply

All of this is mounted internally, providing my case is large enough. the case, which is coming to me, is supposed to be quite large. I'd like to make this atleast somewhat portable, so it isn't a hassle to move from lan parties, and such.

Will this work? What kind of performance can I expect? My only real goal is to overclock the 820 to 3.2ghz

I would like to know some more about waterblocks for peltiers and cold plates. What is commercially available?

[torin3]

Originally Posted by Xris

How does this setup sound?
1 '77 bonneville heater core mounted internally with 2 high flow 120mm fans
1 eheim 1250 pump
1 primochill dual 5.25" res
1 172 watt pelt to cool pentium d 820
waterblock and coldplate the pelt
meanwell power supply

All of this is mounted internally, providing my case is large enough. the case, which is coming to me, is supposed to be quite large. I'd like to make this atleast somewhat portable, so it isn't a hassle to move from lan parties, and such.

Will this work? What kind of performance can I expect? My only real goal is to overclock the 820 to 3.2ghz

I would like to know some more about waterblocks for peltiers and cold plates. What is commercially available?

That setup will work. I've got something similar on a Semperon right now, no res, 226W pelt on CPU only, and external mounting for the heater core, and a weaker pump. I'm getting CPU temps from 10-20°C depending on ambient temp and load. Ok, it isn't exact, but roughly similar. I can't tell you if you'll get the overclock you want, but assuming the wattage on the Intel chip is below what your pelt is rated for, you will probably get ambient to sub-ambient temps.

Also, I would like to emphasize that you use a relay on your pelt power supply, or else wire the fans for your radiator into the pelt power supply. See http://www.ocforums.com/showthread.php?t=387285 for what can happen if you don't.

Good luck.

[Xris]

I've settled on using a maze4-1 waterblock.
I might use a 226W pelt. I'm not sure. What pump are you using?

This crazy idea is getting more and more expensive. I hope this works out. I just wanted to be king of the hill among my friends . . . none of them have anything like this. I can't even go to sleep anymore, I just keep thinking about this computer. I can't wait to get my hands on the case, it might make me forget about how light wallet has gotten for a little while at least.

Thanks for the tip about the fans, I would have probably overlooked that.

A probably stupid question: where should I put my temperature probe to monitor CPU temps?

[muddocktor]

One tip I have for you from when I messed around with pelts is that the Meanwell psu will dump significant amounts of heat into your case if you don't have the exhaust fan of the psu discharging it's air outside your case. I ended up making an external case for the Meanwell psu because it was dumping way too much heat into my case with the system all buttoned up.

[yzf|champ]

Ummmm, i definately think you need a bigger pelt. 172W is not going to give you the results you are expecting. 226 is even cutting it way too close for a dual chip. Why not go for the 320W pelts on ebay? i have two and they are fantastic!

[Xris]

I read that the pentium d runs at 170W under a full load. I can't seem to find anymore information about it. I don't really trust my information. Does anyone know for sure?

[torin3]

Originally Posted by Xris

I read that the pentium d runs at 170W under a full load. I can't seem to find anymore information about it. I don't really trust my information. Does anyone know for sure?

If it runs at 170W, you will definately want a 226W pelt!!! I think the 320W pelts on E-bay are too large to fit in a Maze4-1.

You know, I'm thinking if you don't mind the amount of noise they generate, I would go with a phase change cooling system. You will get much colder temps and probably pay about the same amount or less setting it up and save on power costs as well.

Something to think about.

[Xris]

the 320W peltiers I saw on ebay are 50mmx50mm.

I originally considered phase change, but home built solutions are so ugly and looks are of some concern. Vapochills and prometeias are just way too expensive.

[torin3]

Originally Posted by Xris

the 320W peltiers I saw on ebay are 50mmx50mm.

Just did a quick search and see that it was the 350W ones I was thinking about (62mm) as opposed to the 320W ones. I'll have to pick one up for when I switch over to an A64 system. Thanks!!

Originally Posted by Xris

I originally considered phase change, but home built solutions are so ugly and looks are of some concern. Vapochills and prometeias are just way too expensive.

Well, you could enclose most of it in a case and use some fans to blow enough air through it. But I guess that pretty much depends on your 'crafty' skills. A 320W will be more than adequate for cooling a 170W chip. You can undervolt it for a little more efficent use of the peltier.

Good luck!

[Xris]

Another concern of mine, how reliable will a peltier set up be? I'm used to leaving my computers on 24/7.

Now that the peltier I'm using has jumped from 172W to 320W, is a dual fan heater core still sufficient?

[torin3]

Originally Posted by Xris

Another concern of mine, how reliable will a peltier set up be? I'm used to leaving my computers on 24/7.

Now that the peltier I'm using has jumped from 172W to 320W, is a dual fan heater core still sufficient?

Well, that was how I ran my system for over 6 months without a problem, until a power outage showed me that I should have my fans and pelt on the same power supply.

As far as the heatercore...I'm not sure, but I suspect it would be. However don't take my word for it, as I'm only going from my experience, which is on a different system than yours.

[LabRat23]

I wouldnt use the 320w pelts you see on ebay. Performance veries with wateblock tempurature. At normal watecooled temps they push about 290w at 15v. at 12 volts they push around 190w which isnt much different then the 226w pelt, BUT the 226w pelt won't draw as many amps. The 226w pelt is the better buy.

[Xris]

I just bought the meanwell power supply. Does anyone have any details on fitting it into a drive bay?

Also, I am a little unsure about how to wire this whole thing up. Should the water pump be going 24/7? How exactly should the two fans be wired?

torin3, so what happened to you is that your power went out and turned off your pc and the fans for your heater core as well as the pelt and pump, but the power came back on and so did the pump and pelt. The fans and pc did not come on. The pelt heated the water system and because the fans weren't on it got way too hot and everything overheated, etc.

Is that right?

[torin3]

Originally Posted by LabRat23

I wouldnt use the 320w pelts you see on ebay. Performance veries with wateblock tempurature. At normal watecooled temps they push about 290w at 15v. at 12 volts they push around 190w which isnt much different then the 226w pelt, BUT the 226w pelt won't draw as many amps. The 226w pelt is the better buy.

Thanks for the info. I was wondering about why it was listing variable stats. Are there more powerful pelts out there that are a good buy for a w/c setup?

[torin3]

Originally Posted by Xris

I just bought the meanwell power supply. Does anyone have any details on fitting it into a drive bay?

Also, I am a little unsure about how to wire this whole thing up. Should the water pump be going 24/7? How exactly should the two fans be wired?

torin3, so what happened to you is that your power went out and turned off your pc and the fans for your heater core as well as the pelt and pump, but the power came back on and so did the pump and pelt. The fans and pc did not come on. The pelt heated the water system and because the fans weren't on it got way too hot and everything overheated, etc.

Is that right?

Yes, the fans were plugged into the motherboard and didn't come back on when the power came on. The water got warm enough to shut down the pump, which allowed enough heat to build up next to the water block to form a steam jacket. I'm amazed that the pelt still works after this. It must have gotten close to 200° as some of the solder melted.

Anyway, if you are going to run your computer 24/7, the water pump should do so as well.