View Full Version : I finally pelted my Bird.
I finally got around to installing the 156 watt TEC in my box today. Did the whole thing in just over two hours. To speed things up, I used Aqua Seal with Cotol-240 hardener for a conformal coating. Since Aqua Seal is used in repairing wetsuits, it’s also ideal for holding neoprene insulation on the motherboard.
The results are idle temps of –2C and full load temps of 33C with a rather warm pre-spring California ambient temp of 24C. Also I was able to bump up from 1325 mHz to 1363 mHz. Note that the pelt is powered by the same Enermax 651 that runs the rest of my box. The 12 volt line is at 11.71 volts according to VIA’s Hardware Monitor. An external 15 volt power supply would provide better cooling.
dimmreaper
03-15-01, 02:08 AM
Definitely go for an external 15V PSU Colin.
As I'm sure your aware, just because you running the peltier at 80% of it's Vmax, does not mean you are receiving 80% of it's cooling ability. It's probably only pumping around 110W at 12V.
Jeff Evans (Mar 15, 2001 02:08 a.m.):
Definitely go for an external 15V PSU Colin.
As I'm sure your aware, just because you running the peltier at 80% of it's Vmax, does not mean you are receiving 80% of it's cooling ability. It's probably only pumping around 110W at 12V.
Yeah, I probably will, if for no other reason than just to try it. There’s one just getting dusty out in the garage. Kinda wanted to keep everything in the same box. Besides, I am close to the limit on this chip. There is a computer show this weekend in Fresno. If there is a Bird with the right code, it’s time for an A series board and one of the low voltage, low temp, high speed Birds. Given what I have read, it’s possible that with a newer Bird, an external power supply may not be necessary.
dimmreaper
03-15-01, 02:43 AM
Even if you can't find a good 1.2G voltage dropper, you should pick up a KT133A MoBo just for the hell of it.
I think you are right Jeff. Probably a better LAN card too. This one does not like anything over 110 mHz FSB.
Colin (Mar 15, 2001 02:03 a.m.):
I finally got around to installing the 156 watt TEC in my box today. Did the whole thing in just over two hours. To speed things up, I used Aqua Seal with Cotol-240 hardener for a conformal coating. Since Aqua Seal is used in repairing wetsuits, it’s also ideal for holding neoprene insulation on the motherboard.
The results are idle temps of –2C and full load temps of 33C with a rather warm pre-spring California ambient temp of 24C. Also I was able to bump up from 1325 mHz to 1363 mHz. Note that the pelt is powered by the same Enermax 651 that runs the rest of my box. The 12 volt line is at 11.71 volts according to VIA’s Hardware Monitor. An external 15 volt power supply would provide better cooling.
hi Colin i m using the same 156W TEC and the same Enermax 651 PSU +Watercooling
so me too i m powering the whole stuff with only 1 PSU but my Probleme is that i m getting 30C IDLE i was wondering to have at least 0C but something is wrong in my stuff so i hope that u ll help me to fix it even when i try with 2 Enermax 651 PSU 1 for the TEC and the other for the system i m still getting the same result but i m in 12V only i didn t make the mod to get 15V maybe 15V may help but at least now i should have the same result as u
A7V133 Duron750@1050 1.85vcore
Rusty,
It sounds like you are not getting the heat out of the pelt. What block, radiator and pump are you using?
Update, things are settling in. Idle temp is down to -7 C.
dimmreaper
03-15-01, 09:04 PM
Colin (Mar 15, 2001 08:06 p.m.):
Update, things are settling in. Idle temp is down to -7 C.Could it be tha peltier need to be "burned in" as well :O)
Two things. Air bubbles bled out of the cooling system and excess Artic Silver migrated out of the thermal interfaces.
Two things. Air bubbles bled out of the cooling system and excess Artic Silver migrated out of the thermal interfaces.
Dang dreaded double post. The server is slow tonight and keeps giving me errors.
Colin (Mar 15, 2001 05:28 p.m.):
Rusty,
It sounds like you are not getting the heat out of the pelt. What block, radiator and pump are you using?
here is how my Watercooling looks like
[img="http://www.aquastealth.com/images/customer1.jpg"]
so i hope that nothing is wrong on it so please help me i really wana reach the same temp as you are so i can O/C more thanks
Bear in mind, I am no cooling guru. Two things strike me. I wonder if the radiator can handle the heat from the pelt? Probably more important, how many gallons per hour is your pump rated for?
Colin (Mar 16, 2001 12:16 a.m.):
Bear in mind, I am no cooling guru. Two things strike me. I wonder if the radiator can handle the heat from the pelt? Probably more important, how many gallons per hour is your pump rated for?
i thank you for your help at least you try and i m sure that we ll find what s wrong The pump is a RIO 180; the flow rate is about 38 gallons/hour i hope that it s enough i tough that maybe the peltier is deffective i try a 122W peltier but the probleme still persist i m really lost
Based on my personal experience, 38 GPH seems like the weak link. Read this http://www2.apex.net/users/timwhita/flowrates.html . I have also read that radiators similar to the one in the pic you posted may have a difficult time dealing with high heat loads. Note that I have only read about the radiator but have experienced the comments on water flow.
Colin (Mar 16, 2001 12:50 a.m.):
Based on my personal experience, 38 GPH seems like the weak link. Read this http://www2.apex.net/users/timwhita/flowrates.html . I have also read that radiators similar to the one in the pic you posted may have a difficult time dealing with high heat loads. Note that I have only read about the radiator but have experienced the comments on water flow.
ah sorry it s 120GPH i just make a small mistake
FWIW I had a Rio 800 (160 GPH @1 ft.) running inline. When I switched to a 650 GPH @ 1 ft., my temps dropped 3 degrees. This was before I installed the pelt. My block, radiator and pump can dispose of large quantities of heat. Even so, my water temps went up 10 C after adding the 156 watt pelt. Based on this, I would try a high flow pump first and if necessary, a larger radiator.
surlyjoe
03-16-01, 03:21 AM
The flow rate isnt the prob ,anythin over 90gph is pretty much overkill, Its possible the rad is too small , have you checked the water temps at the exit ? could be a bad peltier too , I have gotten duds before
if i put 2 radiator like this do u think that it ll help??
[img="http://www.aquastealth.com/experiment7.jpg"]
[img="http://www.aquastealth.com/experiment6.jpg"]
I can’t say that I have the experience that the highly esteemed Dr. Surlyjoe has, but increasing the flow rate helped in my system. Dialing up the speed of the two 120mm fans on the Cooling Cube also helps when the system is under a high thermal load.
Rusty, I would think two radiators would work better if they were side by side instead of stacked.
fireball****aka fireball_87
03-16-01, 12:33 PM
just a little thought: from what i read you shuldent be using a copper block ans an alumnim resavower. thay will eat etchother away.
Colin (Mar 16, 2001 12:10 p.m.):
I can’t say that I have the experience that the highly esteemed Dr. Surlyjoe has, but increasing the flow rate helped in my system. Dialing up the speed of the two 120mm fans on the Cooling Cube also helps when the system is under a high thermal load.
Rusty, I would think two radiators would work better if they were side by side instead of stacked.
yeah sure side by side is better but as you can see in my Tower i dont have enough space for that that s why i ll put them stacked
another question for you Collin the -7Ctemp did you read it in your mobo or you have an external sensor like Senfu or something
The temps were measured with the motherboard sensor in the center of the CPU socket. I bent it up a bit to insure contact with the ceramic plate that holds the CPU die. Also, with the center, outside and back of the socket insulated with neoprene, there should be less chance for the temp sensor to be fooled by airflow around the socket.
Colin- I'm not sure if getting a bigger pump will actually help rusty. After all the link that you showed stated:
"Wow, since I was kinda leaning toward the high flow rate camp, I was surprised to find that the best cooling was achieved in the range of 0.5 to 0.6 gpm. "
Now converting that into gph... thats between 30 and 36 gph.
Rusty - I'm guessing that you are using the Aquastealth 2... if so, then from what Joe said on a review of that unit "The pump is a RIO 180; I measured the flow rate at about 38 gallons/hour." which is slightly more but definately around best cooling range. So, my guess is to definately go with another radiator for a peltier system.
fireball****aka fireball_87 (Mar 16, 2001 12:33 p.m.):
just a little thought: from what i read you shuldent be using a copper block ans an alumnim resavower. thay will eat etchother away.
While it is true that anytime you have two dis-similar metals imersed in a liquid one will act as an anode and one will act as a cathode. And you will get pitting and corrosion in the anode (aluminium in this case). If you are worried about this then all you need to do is put a small chunk of zink in the storage tank. It will act as an anode to both the copper and aluminium. If you work anywhere that has large industrial equipment they all have anodes in thier heat exchangers and you can probibly get an old one for free. If not, any auto parts store should have them for car radiators.
Robyn (Mar 18, 2001 11:36 a.m.):
Colin- I'm not sure if getting a bigger pump will actually help rusty. After all the link that you showed stated:
"Wow, since I was kinda leaning toward the high flow rate camp, I was surprised to find that the best cooling was achieved in the range of 0.5 to 0.6 gpm. "
Now converting that into gph... thats between 30 and 36 gph.
Rusty - I'm guessing that you are using the Aquastealth 2... if so, then from what Joe said on a review of that unit "The pump is a RIO 180; I measured the flow rate at about 38 gallons/hour." which is slightly more but definately around best cooling range. So, my guess is to definately go with another radiator for a peltier system.
so i just tried my kit with an additional radiator and fan but it just didn t change anything so the only answer now is maybe my peltier is not working correctly:( i have a 122W and a 156W )and i didn t see any temp difference that s really weird)or i need a bigger watertank and a more powerfull pump
Rusty, what voltage was the 122 watt rated at?
BTW, I have a 172 watt pelt and a 24 volt power supply on the way.
Colin (Mar 20, 2001 11:56 p.m.):
Rusty, what voltage was the 122 watt rated at?
BTW, I have a 172 watt pelt and a 24 volt power supply on the way.
the pelt 122W was on 12 V i finally tried a double radiator but it didn t change anything i may try a bigger watertank with a powerfull pump at least 200gph
A larger tank will only delay the time it takes your coolant to reach equilibrium.
with my peltier 156W 12v this is what i got but the probleme is that i m on 30C idle so i really don t know what to do to fix this tmp probleme:(
[img="http://www.multimania.com/rustyhardware/cpumark140.jpg"]
If you are running at 1596 mHz, that's a major part of the problem. At 12 volts, your pelt is only running at about 110 watts. There is no way it can deal with a 1.6 gig Bird. Nice overclock though!
Colin (Mar 24, 2001 10:03 p.m.):
If you are running at 1596 mHz, that's a major part of the problem. At 12 volts, your pelt is only running at about 110 watts. There is no way it can deal with a 1.6 gig Bird. Nice overclock though!
yeah sure but if i can have -2C idle as u are i m sure i ll have at least 100mhz more:(
i got another bad news about the RIO pump it s not powerfull enough to run a big radiator with a small one that s really annoying the water stopped when i run it with 1 big radiator and a smal 1 :((
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