DFI, PWmic chip, how hot can these go before they become unstable

sagaboy2 · 7 Feb 2006 at 18:41

I have an X2 overclocked system.

This is making the PWmic chip get rather hot in load can hit 50C easy.

I have put a a heatsink on it made from an old pentium one heatsink to try and keep it cooled down.

But what is the maxium temp that these can get to?

Kesnel · 7 Feb 2006 at 18:46

It's around 65-67c and above that you'll start to notice instability as a result of a hot PWM IC. Keeping it at around 50c load will be fine.

Mr Mister · 7 Feb 2006 at 18:51

i found stability became an issue at 60C on my dfi ultra-d

sagaboy2 · 7 Feb 2006 at 21:20

Okies, well hopeful a friend is giving me a RAM sink for it, so that will have better design than a hacked up P1 heatsink.

well least I know I have a little more heat room to overclock.

Dirk · 7 Feb 2006 at 21:23

Pics?

sagaboy2 · 7 Feb 2006 at 21:25

ok ok

Iv got my friends good camera aswel, might aswel let you see the heatsink

*note* rememberd its from a celi heatsink

sagaboy2 · 7 Feb 2006 at 21:38

Had to reduce image size to be able to host them

(big files)

That is the heatsink in the middle

And thats where it came from.

mi9tchy · 7 Feb 2006 at 22:17

that first pic is so blurry!,
i want to get some sinks for my expert or make some i have a few old heatsinks lying around

sagaboy2 · 7 Feb 2006 at 22:21

Yeh should help, just use the ceramic instead of silver to make sure you dont short out the board.

They are fuzzy because I cant hold a camera still at that zoom

aphex · 8 Feb 2006 at 01:40

Ah crap my PWM IC idles at 46C and loads at 66C

This must be the reason to my pc freezing during long gaming sessions!

Mr Mister · 8 Feb 2006 at 12:17

i use a 120mm fan pointing at the pwm area on my dfi mobo and it never goes over 40C load.

Chris19 · 8 Feb 2006 at 16:04

I was about to make an new thread about this as my PWMIC is sitting at 60oC atm iam testing an overclock i have done on an 3800+ x2 so running 2 instances of prime95. What is the PWMIC reffering too? i dont have a clue :s

brocksta · 8 Feb 2006 at 16:10

Chris19 said:
I was about to make an new thread about this as my PWMIC is sitting at 60oC atm iam testing an overclock i have done on an 3800+ x2 so running 2 instances of prime95. What is the PWMIC reffering too? i dont have a clue :s

im not totally sure, but i think it controls the volts going through the different rails on your mobo.

sagaboy2 · 8 Feb 2006 at 16:13

Correct thats what it does.

SpudMaster · 8 Feb 2006 at 16:24

why bother making a heatsink for it when theres already lots on the pwmic area? :S I just put an 80mm fan blowing directy over it. Now it doesnt go above 45c, would hit 67c before which made my 170 unstable at 2.8ghz

Chris19 · 8 Feb 2006 at 16:57

so on the DFI Lan party mb these bits boxed red are the PWMIC?

sagaboy2 · 8 Feb 2006 at 17:06

no. you see the rectangular chip above the red box and to the right of the DIMMS.

On your images its got a wire crossing over it.

SpudMaster · 8 Feb 2006 at 19:04

well i was told it was those heatsinks (would make sense having heatsinks on it seen as it gots pretty toasty) in the red boxes in the pic above, so thats where i put a fan directly blowing and my pwmic temps are now 20c+ cooler. Fan isnt anywhere near the rectangular chip

Kesnel · 8 Feb 2006 at 19:11

The heatsinks to the right of the CPU socket are the mosfets. The PWM IC itself is the large rectancular chip by the 24pin ATX connector.

However, the temp probe that is labled as "PMW IC" is just above the mofsets.

benktlottie · 8 Feb 2006 at 20:14

I tend to bottle it when mine hit 80+ Degrees. Theyre actually rated to 125 degrees jon the DFI's, so beileve me, you have plenty of room to play with ! LOL