View Full Version : How good of an Insulator are TEC's.....
sandman
12-21-2003, 10:50 AM
Alright, so lets say I have an 80watt TEC on my video card, the TEC/psu die. So, I have a waterblock on top of a dead 80watt TEC.
Will the TEC move an mentionable amount of heat through it when it's off/dead?
sjohnson
12-21-2003, 12:02 PM
Not great. Semi-conductors have a high C/W rating. Some transfer would occur but not enough to protect at high volts/high heat.
sandman
12-21-2003, 12:10 PM
Ok, so lets say I have a 5900FX with Vmods, but relatively low voltage for being Vmodded, like enough that the stock heatsink will work with it.
So, it'd be making maybe 45-50 watts of heat is my geuss.
It could give me enough to shut off my system once I see artifacts?
Bra!nFreeZe^
12-21-2003, 12:20 PM
yeah sandman i have read somewhere on these forums that you can even run it without powering the pelt so yeah i would guess that you have plenty of time :)
Holst
12-21-2003, 12:41 PM
You would probably be OK, but I wouldnt recomend testing it...
sandman
12-21-2003, 01:19 PM
Well, I'm not planning on testing it, just like to know what'll happen if i have to......
Holst
12-21-2003, 01:58 PM
The real danger is running the TEC with no water... as you tend to get a fire then..
sandman
12-22-2003, 06:01 PM
Yes, or without a pump, as you tend to get 70-80C water really fast.
REALLY FAST.
BiFfMaN
12-28-2003, 02:16 PM
i just had my pelt die on me this weekend :( :( :(
i WAS using the swiffty MCW50-t with the 80 watt on my R9800p
and was getting ok temps with that, around 23-30c (idle-load) with the temp sensor on the back side of the GPU. But when it went by-by the temps jumped to 40c with the same sensor....good thing i noticed it almost lost a vid card. so yes it looks like it worked a little, i even noticed warmer water, but im thinking if i tryed a game it might have gone thermal.
so yah that little setback has pushed up my need for a bigger pelt.
sandman
12-29-2003, 10:10 AM
Do i smell a 172?
BiFfMaN
12-29-2003, 03:03 PM
:D
Slickthellama
12-29-2003, 06:24 PM
yeah but the power supplies that have 24V capacities are so expensive.
sandman
12-29-2003, 06:29 PM
Yea, but you can run a 172watter at 12V and it'll still be better than an 80watt at 12V.
G H Z
12-30-2003, 01:45 AM
Originally posted by BiFfMaN
i just had my pelt die on me this weekend :( :( :(
i WAS using the swiffty MCW50-t with the 80 watt on my R9800p
and was getting ok temps with that, around 23-30c (idle-load) with the temp sensor on the back side of the GPU. But when it went by-by the temps jumped to 40c with the same sensor....good thing i noticed it almost lost a vid card. so yes it looks like it worked a little, i even noticed warmer water, but im thinking if i tryed a game it might have gone thermal.
so yah that little setback has pushed up my need for a bigger pelt.
Any idea what killed it?
BiFfMaN
01-02-2004, 06:12 AM
yes....i guess some time during install or when it was built but the pelt plate cracked. im sure it was not because of overheating because the ceramic will outlast the soder on the wires. The crack i guess let water inside and popped the pelt like a fuse. Everything else is ok just replaced the pelt with the 172w @ 12volts and runs way better IMO then the 80w. Now im seeing temps in the 11c-19c (idle-load) on my GPU. That is alot nicer for overclocks me thinks :toast:
OH yah i picked up the DD maze4-1 GPU also with the 172w pelt.
the temps i posted are with the maze4-1, but im sure i would get close to the same temps with the swiftty MCW50-t with the 172w on it...with the setup i have ATM.
G H Z
01-07-2004, 02:49 AM
Originally posted by sandman
Alright, so lets say I have an 80watt TEC on my video card, the TEC/psu die. So, I have a waterblock on top of a dead 80watt TEC.
Will the TEC move an mentionable amount of heat through it when it's off/dead?
I just happened to test this scenario a week or so ago. Ran an un-powered 80W MCW50+T on my 9500@1.84v not overclocked for about 2 hours. Water temps never got out of whack, but I don't know what the core temps were. Never artifacted at all either.
Unfortunately, I also tried the reverse scenario out as well
<img src=http://img1.photobucket.com/albums/v31/canny/IMGP0039.jpg> :smileysex
shortcircuit
01-07-2004, 04:21 AM
When I was using a pelt on my VC I never had problems with 2D apps while the pelt was turned off. I used to leave my watercooling setup on 24/7 and only turn the TEC on when gaming or benching. Every once in a while I would try gaming with the TEC off and be like "where did all these core artifacts come from?" then I'd remember and turn the TEC back on. For clicking around on the Internet, browsing forums, etc, it was just fine with the TEC turned off.
sandman
01-07-2004, 01:30 PM
Originally posted by G H Z
I just happened to test this scenario a week or so ago. Ran an un-powered 80W MCW50+T on my 9500@1.84v not overclocked for about 2 hours. Water temps never got out of whack, but I don't know what the core temps were. Never artifacted at all either.
Unfortunately, I also tried the reverse scenario out as well
<img src=http://img1.photobucket.com/albums/v31/canny/IMGP0039.jpg> :smileysex
Ouch man that sucks.
I had those same ramsinks on my 9500np.
My 5 pennies :)
I got MCW5000P-T on overvolted and oced P4A.
Swiftech supplied plastic connector block burned (literary) on me and I lost power to my CPU TEC!!!
Surprise, surprise nothing happened, only CPU temp went form 0C to 40C quite quickly LOL Temp diff between core and water is so much that even TEC + coldplate will do to keep from burnning, but don't expect any ocing records :)
G H Z -> great pic, it's like ocing p0rN ;)
btw, do you have links to w1zzard's soft mods page? And what R9500 you got to reach such a whooping core and mem clocks?????? (any volt mods?)
G H Z
01-09-2004, 11:43 AM
Sure
http://ocfaq.com/softmod/
That was a Sapphire card. All vmodded cept vddq, crappy Infineon.
Originally posted by G H Z
Sure
http://ocfaq.com/softmod/
That was a Sapphire card. All vmodded cept vddq, crappy Infineon.
Let it Rest In Pieces, it fought bravely and was pride of it's rig ;)
Thx, m8, d'loading now :)
Btw, don't throe it away, mem chips are all right and some ppl need them, trust me :)
I f**ked my trusty Asus Ti4600 while installing mem chip heatsinks and it's been a year since I started to look for suitable 2.8ns Samsung chip to replace my broken one to no avail... I got ppl to do the micro solder job but no mem to install....
G H Z
01-10-2004, 02:20 PM
Originally posted by Jabo
I got ppl to do the micro solder job but no mem to install....
Where did you find peeps with the right tools/skill for that?
And, I think you might find it fairly difficult to find someone wanting 3.3Infineon;)
There are some companies in UK who have owens and do PCB repairs. If you approach them correctly they will do one off job almost for free :)
Btw, you don't know by any chance somebody who has screwed Ti4600Uktra with at least one surviving 2.8ns Samsung mem chip?...
Epsilon
01-16-2004, 07:15 AM
If u run an overclocked GFFX (voltmodded) u can't run stable when the pelt is disabled.
The card will not die, but the system will be unstable (that's actually what u want to happen when the PSU die's).
But why not using a Relais in the powerline of your main PSU?
So when the tec psu dies, the computer will shutdown (infact, the power will be cut off ;)).