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muffy · 06-29-2003, 04:58 PM

i have a p4 2.5

with water cooling

i have 2 radiators one glacial radiator and one smaller radiator and a aluminum water block running 3'8's piping. I also have a peace of copper between the cpu and the peltier

i purchased a 172w peltier to make things a but more interesting. from what i have read i was expecting to get sub zero temps

however at best i can only get 17c . after doing some research i found that the 172w peltier is meant to be running @ 24 Volts even though it comes with a plug to plug into a normal 12volt psu ? so after putting an ammeter into the loop i found it's only making 62w's @ 12volts not 172w's, So i bought a 24 volt psu and now the peltier runs at 172w's however it still only cools the cpu to 17 ish degrees and im at a complete loss as to why

if i completely remove it from my system and place the peltier 's hot side to the water block and leave the cool side in the air it simply doesn't get that cold ? ( as in much below ambient )

the water block and water does not seem to get warmer than ambient temps. from my understanding if the cold side is 17c that would make the hot side about 86 degrees ! which seems a bit hard to believe when the water doesn’t seem to get warm

what im asking is why doesn't it work properly ?

06-29-2003, 04:58 PM	#1
muffy Cooling Neophyte Join Date: Jun 2003 Location: Auckland, New Zealand Posts: 40	Why doesn't my system run cool ? i have a p4 2.5 with water cooling i have 2 radiators one glacial radiator and one smaller radiator and a aluminum water block running 3'8's piping. I also have a peace of copper between the cpu and the peltier i purchased a 172w peltier to make things a but more interesting. from what i have read i was expecting to get sub zero temps however at best i can only get 17c . after doing some research i found that the 172w peltier is meant to be running @ 24 Volts even though it comes with a plug to plug into a normal 12volt psu ? so after putting an ammeter into the loop i found it's only making 62w's @ 12volts not 172w's, So i bought a 24 volt psu and now the peltier runs at 172w's however it still only cools the cpu to 17 ish degrees and im at a complete loss as to why if i completely remove it from my system and place the peltier 's hot side to the water block and leave the cool side in the air it simply doesn't get that cold ? ( as in much below ambient ) the water block and water does not seem to get warmer than ambient temps. from my understanding if the cold side is 17c that would make the hot side about 86 degrees ! which seems a bit hard to believe when the water doesn’t seem to get warm what im asking is why doesn't it work properly ?