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Peltier Action - Page 2

post #11 of 68
Quote:
Originally Posted by tuchan
now that is a killer idea!!! I have power supplies everywhere,(I'm a hoarder) how many amps\\V you running for your 437 watter?
13.5 volts right now. It's less than 18 amps because at 18 my PSU will shut down.

Quote:
Originally Posted by tuchan
Is it just the 2 of us pinhead?
Looks like it. Probably because you can't buy a TEC already put together (like I was lucky enough to do). As you can see, building it from scratch can get pretty expensive and is very time consuming. Oh well, the phase guys build their own phase coolers. Why don't we make our own TEC's?

I see the biggest advantage of TEC's is you've already got water, so just add the peltier. You can still cool your GPU as well, providing you've got a big enough rad to keep the water temps down.

Edit: I just can't wait until the Cool Chips come out. Have you read anything about them?? The manufacturers say they're in upwards of 60% efficient. That stomps any phase cooler out there.

Edit: I posted the same time Mastacator did, I guess it's us three!
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post #12 of 68
Thread Starter 
I have not read anything about the Cool Chips at all??
It is a little differrent being part of something that is very unique to this forum.
This is all pretty new to me now that it seems ot be running correctly, was so close to giving up on oveclocking but now look
The correct set-up is obviously very high on the list and the seating and correct use of the thermal paste for your conditions is important also.


cheers mate proud to be apart of the elite pelt crew
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post #13 of 68
Their site seems to be down right now, but it may be my connection. Look here:

www.coolchips.gi
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post #14 of 68
Thread Starter 
its down
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post #15 of 68
Quote:
Originally Posted by Mastacator
He's probably not going to run it at 24v. half voltage, 12, would be more efficient. And I'm sure he knows this.
You do know that the wattage of a 437watt tec running at 12v will result in a 88 or 109 watts [depending on model] tec right? I seriously hope he doesnt run his tec at this power level. power levels with Peltiers are nonlinear luckily bloody sorcerer @ XS created a awesome chart showing the specs of tecs at different voltages.

Quote:
Originally Posted by Bloody_Sorcerer

437 watt / 26.7 VMax / 32.8 IMax

5 volts: 15.3 watts; 6.14 amps
6 volts: 22.1 watts; 7.37 amps
7 volts: 30.0 watts; 8.59 amps
8 volts: 39.2 watts; 9.82 amps
9 volts: 49.7 watts; 11.05 amps
10 volts: 61.3 watts; 12.28 amps
11 volts: 74.2 watts; 13.51 amps
12 volts: 88.3 watts; 14.74 amps
13 volts: 103.6 watts; 15.97 amps
14 volts: 120.2 watts; 17.19 amps
15 volts: 137.9 watts; 18.42 amps
16 volts: 156.9 watts; 19.65 amps
17 volts: 177.2 watts; 20.88 amps
18 volts: 198.6 watts; 22.11 amps
19 volts: 221.3 watts; 23.34 amps
20 volts: 245.2 watts; 24.56 amps
21 volts: 270.3 watts; 25.79 amps
22 volts: 296.7 watts; 27.02 amps
23 volts: 324.3 watts; 28.25 amps
24 volts: 353.1 watts; 29.48 amps
25 volts: 383.1 watts; 30.71 amps
26 volts: 414.4 watts; 31.94 amps

437 watt / 24 VMax / 25 IMax
5 volts: 19.0 watts; 5.2 amps
6 volts: 27.3 watts; 6.2 amps
7 volts: 37.2 watts; 7.3 amps
8 volts: 48.6 watts; 8.3 amps
9 volts: 61.5 watts; 9.4 amps
10 volts: 75.9 watts; 10.4 amps
11 volts: 91.8 watts; 11.5 amps
12 volts: 109.3 watts; 12.5 amps
13 volts: 128.2 watts; 13.5 amps
14 volts: 148.7 watts; 14.6 amps
15 volts: 170.7 watts; 15.6 amps
16 volts: 194.2 watts; 16.7 amps
17 volts: 219.3 watts; 17.7 amps
18 volts: 245.8 watts; 18.8 amps
19 volts: 273.9 watts; 19.8 amps
20 volts: 303.5 watts; 20.8 amps
21 volts: 334.6 watts; 21.9 amps
22 volts: 367.2 watts; 22.9 amps
23 volts: 401.3 watts; 24.0 amps
24 volts: 437 watts; 25 amps
Read more here

Quote:
Originally Posted by tuchan
mmm I'm not too sure on what to do regarding the voltage. I have read that pumping the 24 v and a heap of amps into the pelt will relult in cold temps on one side and very very hot temps on the other. The required amount of power the thing really needs would have to be different depending on which cpu and how much vcore you are going to use and how much you are willing to cool the cpu. I have come to realise that it is just as important if not more to keep the hot side as cool as possible. The cooler the hot side the cooler the cold side so there is going to be some massive tweaking available.
I am going to pick up a bench power supply I am thinking to power this little piece of magic. I will of course try the normal atx psu in both series and parallel and also just the single unit on its own.

With the added cost of a good quality bench PSU you can see why peltier cooling is not popular. This project is just adding and adding up. It would probably cost around the 700 Aussie dollar mark to set up this system I am thinking from scratch and easily more depending on how extreme you would like to go. I have actually done very well given the rad has cost me nothing (xie67 ) and I am using a submerged pond pump (which is like a fire hose 1699 lph) for now.

cheers for the support fellahs
Put them in series. that will get you the correct voltage. I believe that the tec will only pull what it needs at any certain voltage per the chart above. so more amps would just not be used. Look into a nice meanwell. The pelt could be more efficient but I would think that the 226 might be better at 12 volts.
    
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post #16 of 68
Thread Starter 
mmm cheers mate that is very helpfull indeed: Looks like I need 24V.
But considering TEC's run well at half voltage and current?? They will be more efficient. So................I am thinking.................if I ran the 437 watt at the same current as the 226 watter would it result in similar performance more\\less because the maximum capability of the TEC is higher?
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post #17 of 68
I've got the 24v/24a peltier. For some reason I somewhat doubt that chart. At 12v on my TEC, I get about 5°C to 7°C load temps. At 13.5V I get -10°C load temps. Definately nonlinear... But this is on a X2 3800 at 2.6 Ghz running on 1.6v. I would guess this processor is dissipating more than 109 watts. However, if the CPU is putting out more heat than the peltier can handle, the temps simply continue to rise. This obviously isn't the case, so I don't think the chart is perfectly accurate.

Also, I've tried running my 437w peltier on 5 volts and the results are even more interesting (and more confusing). It only loads up to 25°C. I monitored temps using Prime95 and speedfan, and being skeptical of my own results, I verified temps in the BIOS.

Edit: If the chart is accurate, I would still suggest building the PSU that's now in the Peltier/TEC section. You can adjust it from 12v to 18v and that would definately give you ample power to work with.
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post #18 of 68
you have shiny ram
    
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post #19 of 68
Seeing as you are getting 11C temps, whats up with the low OC on the Venice?
You should be able to get that sucker to at least 2.8GHz with that TEC setup.
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post #20 of 68
Thread Starter 
Quote:
Originally Posted by Some_Idiot2
Seeing as you are getting 11C temps, whats up with the low OC on the Venice?
You should be able to get that sucker to at least 2.8GHz with that TEC setup.
Yes I know I haven't given the CPU a go over yet (its the opty 144) because this has only just got up and running properly after the dog issues



Yes the Ram is shiny remy5405 its the gold heatspreaders on the Team Xtreme sticks
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