Whats the difference?

Crosstrack16 · 05-11-2003, 07:13 PM

If you have a cpu that puts out 76w heat, and a pelt that takes 226w, isnt that overkill? would a 120w do the job just as well?

Since87 · 05-11-2003, 09:35 PM

The Qmax spec of a TEC is the amount of heat it can pump with zero temperature difference from coldside to hotside.

The dTmax spec is maximum temperature difference between coldside and hotside with no heatload. (at some standard hotside temperature like 25C)

The operating point when cooling a CPU will be somewhere between these extremes. The more heat the TEC is pumping, the lower the dT between coldside and hotside.

So, for any given heatload, a TEC with a higher Qmax should achieve a higher dT when pumping that heatload than a TEC with a lower Qmax.

t00lb0x · 05-11-2003, 11:11 PM

That means higher Qmax and higher Delta Tmax the better?

Since87 · 05-12-2003, 10:17 AM

Quote:

Originally posted by t00lb0x
That means higher Qmax and higher Delta Tmax the better?

Yes, although dTmax usually only varies from 67C to 72C, depending on the TEC.

t00lb0x · 05-12-2003, 05:43 PM

is this a good Pelt?
http://www.xoxide.com/226wapope.html

Crosstrack16 · 05-12-2003, 07:57 PM

i've heard only good about it...toolbox

t00lb0x · 05-12-2003, 08:00 PM

Thanks *adds to Expiriment wishlist* I have a huge cpu project, when I finish I'll take some s/s

05-11-2003, 07:13 PM	#1
Crosstrack16 Cooling Savant Join Date: Jun 2001 Location: Spring Hill, FL Posts: 169	Whats the difference? If you have a cpu that puts out 76w heat, and a pelt that takes 226w, isnt that overkill? would a 120w do the job just as well?

05-11-2003, 11:11 PM	#3
t00lb0x Cooling Savant Join Date: May 2003 Location: In a box Posts: 221	That means higher Qmax and higher Delta Tmax the better? __________________ "If you can't dazzle them with brilliance, baffle them with bullshit"

05-12-2003, 05:43 PM	#5
t00lb0x Cooling Savant Join Date: May 2003 Location: In a box Posts: 221	is this a good Pelt? http://www.xoxide.com/226wapope.html __________________ "If you can't dazzle them with brilliance, baffle them with bullshit"

05-12-2003, 08:00 PM	#7
t00lb0x Cooling Savant Join Date: May 2003 Location: In a box Posts: 221	Thanks adds to Expiriment wishlist I have a huge cpu project, when I finish I'll take some s/s __________________ "If you can't dazzle them with brilliance, baffle them with bullshit"

05-11-2003, 09:35 PM	#2
Since87 Pro/Guru - Uber Mod Join Date: Sep 2002 Location: Indiana Posts: 834	The Qmax spec of a TEC is the amount of heat it can pump with zero temperature difference from coldside to hotside. The dTmax spec is maximum temperature difference between coldside and hotside with no heatload. (at some standard hotside temperature like 25C) The operating point when cooling a CPU will be somewhere between these extremes. The more heat the TEC is pumping, the lower the dT between coldside and hotside. So, for any given heatload, a TEC with a higher Qmax should achieve a higher dT when pumping that heatload than a TEC with a lower Qmax.

05-12-2003, 07:57 PM	#6
Crosstrack16 Cooling Savant Join Date: Jun 2001 Location: Spring Hill, FL Posts: 169	i've heard only good about it...toolbox

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