View Full Version : Will an 80w work on a cpu?
fooforon
10-05-2003, 06:42 PM
Hi
Im new to the tec world and was wondering how an 80w tec would work on the cpu, Casue I know with the 226 you need a deiacated psu. But with the 80 you wont if you have enough powere of course. I do realize I wouldn't be getting super low temps but even stting around 10-15 degrees. I may be going off in the wrong direcation but any input would be aperiated. thanks
Jamie
saaya
10-06-2003, 03:26 AM
xp@11x200 with 1.6v=71W
xp@10x200 with 1.7v=73W
and a 2.4c@default and 1.5v should be ok as well. ok means it wont fry, but you wont get great temps. the lower the clockspeed and the lower the voltage the better and the cooler the cpu.
Holst
10-06-2003, 05:34 AM
Sorry saaya but your wrong m8.
80watt's is the ammount of energy/second that TEC can move at 100% efficency.
At best your going to have 75% efficency on a TEC, so it just wont have enough cooling capacity to work on a CPU.
most people recon double CPU wattage is what you need.
With only 80watts your temps will be allot higher than normall.
Minimum wattage for TEC cooling CPU is 172watts, anything else is pointless.
TBH TEC cooling is (for most people) way more trouble than its worth. Your better off modding a fridge to make a chiller.
fooforon
10-06-2003, 05:57 AM
ok thanks for the help and clearing that up :)
saaya
10-06-2003, 06:07 AM
i think it was jeff who tried an 80W tec on his barton and he got 5°C temps (tec was cooled by chilled water iirc)
Holst
10-06-2003, 10:01 AM
I think that was using very low vcore on a chip that liked temps not voltage.
I "can" be done but I think jeff's system was specially designed for the 80watt pelt, for 99.99% of people it will be rubbish
saaya
10-06-2003, 10:23 AM
no not specially designed hehe, he found an only 80W tec from a camping coolbox and used that one :D
Holst
10-06-2003, 10:25 AM
or just a bit lucky :P
\/icious
10-06-2003, 12:18 PM
yeah i did the same thin on my old rig with my 3ghz celly. i slapped an 80watter (or i was told it was an 80watter) and i was hittin 13c. It camp from a camping cooler as well
Chilled water changes everything. It's impossible to use 80watt TEC with straight water cooling on ANY CPU. It will burn....
Wattage ratings are VERY imprecise (at least ones circulating around... VERY expensive and sophisticated equipment has to be used to accurately measure thermal output of a CPU ).
ONLY 226 watt TECs make any sense when TEC CPU cooling is concerned, every other case air cooling is even better...
saaya
10-06-2003, 06:26 PM
jabo, did you ever try it? i bet no, yet i know somebody who did try it and he got acceptable results. im not saying its a good solution, but is IS possible.
i dont think you can max out any actual cpu with it since you need a vcore that is too high for the tec to get the max out of the cpu, but it IS possible to use an 80W tec on an xp or P4c
NO, you are right, I have not tried it :)
My professional life is about knowing how things WILL work without first trying them :)
According to all the maths I've done 80watt module is only able to pump 80watts of heat at it's max rated voltage (usually 15v).
If you make a very efficient water block and hook it up to hiogh flow system you may just be able to pull it off without damaging your cpu.
Cpu temp will ba as high as water temp
Any oc or volt mod and you are getting temps which are much worse than air.
You may treat such a setu, without power switched on as straight water cooling setup but with VERY bad block.
Add thermal load of the module and temps are rising...
If a cpu is producing more than 80 watts you may get a situation of localized hot spots which tec is not able to cool fast enough and temps will be getting locally to dangerous levels risking internal cpu damage...
saaya
10-07-2003, 04:23 PM
well if you havent tried it how can you say its impossible to use an 80W tec on a todays cpu with normal watercooling? id love to do it just to proof you wrong, but i dont have an 80W tec. :D
Originally posted by saaya
well if you havent tried it how can you say its impossible to use an 80W tec on a todays cpu with normal watercooling? id love to do it just to proof you wrong, but i dont have an 80W tec. :D
I had a bad day y'day, sorry guys for being a §§§§§...:rolleyes: :confused:
I believe you man, no worries :)
If you say you saw it being done, then fine, it is possible. I am open minded person, you know...
But what about temps this chap was getting?
saaya
10-08-2003, 04:53 AM
np :toast: :D
he got like 10°C idle i think and under load the chip would run hot quickly... im not suprised at all since it was a barton@~2.2ghz. the voltage must have been only 1.7v to get this low idle temps.
well sorry for beeing so stubborn :D its senseless to use an 80W tec, but its possible if you only clock the chip to 2-2.2ghz with a very low vcore.
Holst
10-08-2003, 07:09 AM
I think the point we were making is that although it might not blow up, it wont be any better than just air or water on its own.
hell... you can use a jamjar filled with water to cool a CPU, dosent mean it will work very good (see spodesabode.com for details)
saaya
10-08-2003, 07:35 AM
LOL :rotf:
and if you are a realy, realy tough guy, a proper macho-man you can hold your hand against cpu to cool it.
Human skin is quite efficient in thermal managenet business ;)
fooforon
10-10-2003, 07:52 AM
Ok guys thx for all the input I believe I under tecs a bit, thanks again