Peltiers - dead and buried ? Or still viable ?

[aussie-revhead]

Camp 1 .. i have a 1 watt tec and i want to use it to cool my 500watt CPU

Camp 2 TEC’s are to inefficient to work

Camp 3 i want to make a TEC unit as cheap as possible

The fourth camp is - i7 pump out too much heat for a tec to cool, and this is what I keep getting told but without any real proof, thats why I was hoping you might have some test results on your blocks. I can test one for you if you like .... but I would definately have a dedicated Meanwell psu for it.

They are worth a good deal....possibly a revival in TEC usage especially the 2 x 50....he has spent ages designing these and there is no reason why they can't handle the higher TDP CPU's with the correct TEC selection....these are worth whatever he charges and since he charges little/nil for his time and they do take hours to mill never mind the hours he spent designing them, they are a bargain.

I wasnt implying anything .... I just wanted to know the price .....

Well he ships to the UK so since your only in his backwater....

Yeah I didnt see that, I assumed he was in usa somewhere .....

[Ultrasonic2]

The fourth camp is - i7 pump out too much heat for a tec to cool, and this is what I keep getting told but without any real proof, thats why I was hoping you might have some test results on your blocks. I can test one for you if you like .... but I would definately have a dedicated Meanwell psu for it.

i know where this comes from HOWEVER as far as i can tell no one has tried to cool a i7 with a reputable block and TEC...

NO ONE will ever win a debate saying my 2x50 watt block with 2 300watt tecs wont cool a i7

A i7 doesn't doesn't get close to 600watts .. so it will work with out a doubt IF implemented correctly it's just a question of how well.

[aythrea]

i know where this comes from HOWEVER as far as i can tell no one has tried to cool a i7 with a reputable block and TEC...

NO ONE will ever win a debate saying my 2x50 watt block with 2 300watt tecs wont cool a i7

A i7 doesn't doesn't get close to 600watts .. so it will work with out a doubt IF implemented correctly it's just a question of how well.

Someone ought to issue a challenge. I'd be interested to see some I7 Tec numbers. LN2 and Dice is one thing... Tecs require some finesseing and a far deeper understanding of electricity than what I have.

[malkiewicz]

I love my TEC's... My i7 is nice and cool 24-7 at 4.2Ghz... I've been crunching @ about 100% capacity with very little issues.... Good thing I don't pay for my electricity... My power supply is running at about 75-80%... Ooo and my computer keeps my room nice and toasty during the winter months…

[aussie-revhead]

More details please malkiewicz, what sort of temps are you getting ? Your sig says up to 54 degrees, is that right ?

[NaeKuh]

NO ONE will ever win a debate saying my 2x50 watt block with 2 300watt tecs wont cool a i7
IF implemented correctly it's just a question of how well.

u dont have a problem with the cooling numbers... your problem tho will lie in the hotside.

Are you aware of how great the block must be to efficiently move away 600+(head load off an i7)



And Where did my pwm thread ghost off too?
I wanted to get that dude to start it...

[zipdogso]

u dont have a problem with the cooling numbers... your problem tho will lie in the hotside.

Are you aware of how great the block must be to efficiently move away 600+(head load off an i7)

Yeah it will be pretty warm off the hotside...your forgetting that the heat off the hotside is only double the cooling at the operating point (per TEC.) not double the max cooling.
There is some controversy about how hot i7 really are anyway....I doubt very much indeed the cpu output is any where near 600w.

And Where did my pwm thread ghost off too?
I wanted to get that dude to start it...

try using search the list has been cleaned but you will still get it with search.

EDIT - just for you here it is - http://www.xtremesystems.org/forums/...d.php?t=240770

[Ultrasonic2]

u dont have a problem with the cooling numbers... your problem tho will lie in the hotside.

Are you aware of how great the block must be to efficiently move away 600+(head load off an i7)



And Where did my pwm thread ghost off too?
I wanted to get that dude to start it...

since i dont expect you to run the block anywhere near max volts you'll probably have a lower hot side temp than with the 62mm block running at a higher input voltage. and the bigger block will be achieving a cooler cold side temp

[demonkevy666]

Yeah it will be pretty warm off the hotside...your forgetting that the heat off the hotside is only double the cooling at the operating point (per TEC.) not double the max cooling.
There is some controversy about how hot i7 really are anyway....I doubt very much indeed the cpu output is any where near 600w.


try using search the list has been cleaned but you will still get it with search.

EDIT - just for you here it is - http://www.xtremesystems.org/forums/...d.php?t=240770

I wonder why I7 gets so hot ? maybe because of higher TDP maybe ?

I do know phenom II tend hold a bit of heat with added voltage, then again that maybe due to SOI silicon. though some phenom II can cold bug they will need lower hyper transport for the get around.

the voltages for phenom II are a lot higher then intel's because of resists in the SOI. this could also explain the cold loving as the old SOI wasn't strained as much as this 45nm so imperfections caused the cold to shrink the insulator on 90nm & 65nm. also immersion lithography for higher tolerances.

I'm not totally familiar with bulk silicon

Bulk silicon seems same go's with the voltage but it's at lot more impact able to temperature. they do use HGMK in there 45nm.

[flak-spammer]

What I would like to know is what the actual TDP of the average 4GHz Core i7 would be. The problem isn't hot per se, it's just that the core i7 seems to dump a lot more heat than the previous generation of CPUs.

[zipdogso]

we really have started another can of worms.....goodness me if only......

I wish someone, somewhere could give us a definative answer as to how many watts a top i7 gives off....

[LinusTech]

It's not that hard to calculate. You just need to set up a loop with an i7, a fixed amount of water, a temp probe and no radiator.

I don't know the calculation off the top of my head, but you can measure based on the volume of water and how long it takes to increase 1C. That will give you the heat output.

[zipdogso]

It's not that hard to calculate. You just need to set up a loop with an i7, a fixed amount of water, a temp probe and no radiator.

I don't know the calculation off the top of my head, but you can measure based on the volume of water and how long it takes to increase 1C. That will give you the heat output.

I don't think the method is really the problem....it's getting someone reliable to do it.

[Elloquin]

I'll be testing a i7 975ee on a 24v 400w tec very soon i will report back.

P.S. Ultrasonic I may need one of your 62mm tec blocks soon :P PM me lol.

[zipdogso]

I'll be testing a i7 975ee on a 24v 400w tec very soon i will report back.

P.S. Ultrasonic I may need one of your 62mm tec blocks soon :P PM me lol.

Well we will be interested in your results but as already discussed it is not strictly what we need. What we is the output of an i7 doing it your way using a TEC won't be conclusive due to the variables of setting up and running a TEC - no 2 people will get the same results.
We want to know the output of an i7....not an i7 with a TEC on it.