1.2Ghz AXIA, cleaned and re fitted heat sink, now temps shot up

[Egg]

lo there

im running a 1.2 ghz AXIA on a ABIT Kt7A raid board at default core voltage

a month ago i took off my thermo engine and delta fan and cleaned them, re applyed artic silver, and re fitted the heat sink.

before i cleaned my heat sink my temps were at 30 ish idle and never more than 45 at load. THis was overclocked at 1.4

now my temps are 49 idle and 52 load! It isnt over clocked at all, just at 1.2

ive taken the hsf off several times, re applyed artic silver and put the heat sink back on, i even tried bending the clip so i would get more pressure on the die. nothing has worked.

i was thinking that the temp sensor on the kt7a was wrong, but ive crashed a few times when the cpu`s under load, so it must be getting hot..

someone please help meeee :)

[lennytiger]

are u sure its on the right way round try it the other way round so the thing is touching the core of the CPU apply AS again, is the fan working full belt??

[Egg]

yea its deffinitly on the right way round...

does as2 go off?? cause ive had this tube for a while now....

[AlanSr]

you may have to much silver on there, have you tried lapping it?
also what temp program are you useing? if your using the hardware monitor it can read up to 10C higher than usual.
try mbm 5.09, its the closest thing besides a thermonitor on your core:)

lapping droped 4C for me, I have the same chip and board.

I O\C mine to 1370, how did you get 1400?

I think my cheap ram is limiting me, I'm ordering some good pc 150 later this week.

[Hoot]

I doubt that AS2 will deteriorate on the shelf in a time frame that impacts your lifetime. As for the sudden change. Inspect both the core surface and the ThermoEngine base for any nicks that may rise above the flat of the surface. It doesn't take much to impact performance. On that subject, the ThermoEngine I played with had a poor finish on its base. Very grainy and covered with milling ridges. Lapping it would ensure its flatness and tighten up the grain of the finish, thus improving the contact efficiency with the core. It lowered the temps on the one I had. Lapping procedures abound around the net. Quite frankly, given the suddenness of the change and the fact that you've tried remounting it several times, I am at a loss for an explanation as to why it would happen. If and when you get it resolved, do report back what you did and/or found to be the contributing factor. Good Luck

Hoot

[Egg]

Thanks for your replys

to much AS2 might be a problem, i will re-seat the heat sink once again and C :)

AlanSr - i bought the cpu from www.overclockers.co.uk it is a 1.2 " guaranteed and tested" to 1.4.
im running crucial ram at 140fsb


i will also install mbm 5 now..

Hoot i will do as you suggest and look at the die and the heat sink bottom, and lap it too...

once again thanks for your replys

[The Overclocker]

too much artic silver, go to their web site and see how to apply it

[AlanSr]

I think thats my problem then, my cheap ram will only let me get 136 fsb and with the multiplier I can get it to 1390.
my new ram should make a big difference.


how did mbm work out???

you should see a big temp drop

[Egg]

MBM says case temp at 27C and cpu at 48C idle, i think i mighta over done it with the silver...

[Egg]

WOO - i took my heat sink off, and re applyed the as2 after fully reading the instructions, booted up and checked bios, i was at 33C idle :)

when i took the heat sink off, there was very large areas on the die that had no as2 on them, im not sure what i was on when i fitted it...

in windows now im clocked at 1333 mhz and idle at 44C .. not as good as it used to be, but after seeing the bottom of the hs (tis very scratched and marked) i know why.

This leaves me with 2 options, get lapping, or, get a swiftech that i been dieing for :)

thanks for all your help guys