HELP!!! I have a K6-450@500 without the Metal Cap!!What should I do next?

[thodoris]

Hello guys .. I manage to pull off the cap of my K6-2 and after applying some thermal paste on the core of the cpu I placed back the cooler..but I didnt get any improvements in the cooling department ? WHY ?? everyone said that the cap was useless in the first place and it actually does not help for the cooling ?

Have i missed something ? ? !

Thanks for the help btw !

[Phil]

How are you measuring the cpu temp?

[thodoris]

i am using the bios utility for the motherboard during the booting sequence..i dont trust any other software controlled temperature readers through windows .. they tend to go +- 5-6C ..

[Phil]

so is that getting the reading from an in socket thermister? or is it the motherboard temp reading?

[thodoris]

it is an in socket reading .. i pulled the thermistor a llitle bit in order to be closer to the cpu.

[AZZKICKER]

well the "plate" help spread the heat before its on the heatsink

also thermister isnt that great

but heold i bet the "core" itself is cooler even know the thermister dont say so

is your heatsink hotter now??

[eobard]

First did you lap the sink? I de-capped my chip and "sanded" the sink but I wouldn't call my first effort lapping and my machine's performance decreased, I had to run the chip at factory spec. Then I did a true lapping job AND I took a copper coin and lapped both sides of it and used it between the chip and sink. I used a brittish pence because it's a bit bigger than a penny and thus easier to work with and I assume will absorb more heat (or heat more easily). Lapping a coin is not easy to do, I put a blob of hot glue on the side I wasn't lapping to make it easier to grip. I don't know what my heat is, my board has no sensor technology in it, but my results speak for themselves. When I was finished and had put everything back together not only could I go run my system at a stable 551 (100.2 X 5.5) but I could also run it stably at 560 (112 X 5.0). Before de-capping the chip the best I could do was 500 (100.2 X 5) or 522 (95 X 5.5). If you have really lapped your sink bottom good then try putting a lapped copper coin between. If that doesn't help then perhaps your chip is at its speed limit.

Hope it helps.

[Phil]

Originally posted by thodoris
it is an in socket reading .. i pulled the thermistor a llitle bit in order to be closer to the cpu.

did you do this after de-capping it? if so you may just be getting a more accurate reading now which would explain the lack of change.
Or it could just be that it hasn't helped with cooling, no harm done ay?

[thodoris]

well i lapped a copper greek drachma (!) but after placing it between the heatsink (Spire heatsink) and the core covered with some thermal paste the temperature increased ..

I also lapped the heatsink but since you said about decreased performance if the lapping isnt that good makes me think twice about the quality of lapping that i did.

The temperature though generally are between 35oC and 43oC under full load.. its not bad but I dont know if I am limited by the motherboard to raise the CPU frequency more (max:500 Superb1 QDI)

[thodoris]

to phil

the sensor was pulled closer to the cpu before the de-capping. And the heatsink is very cool ..

Since I am running the chip at 2.4V the temps are quite low.

[eobard]

Originally posted by thodoris
well i lapped a copper greek drachma (!) but after placing it between the heatsink (Spire heatsink) and the core covered with some thermal paste the temperature increased ..

I also lapped the heatsink but since you said about decreased performance if the lapping isnt that good makes me think twice about the quality of lapping that i did.

The temperature though generally are between 35oC and 43oC under full load.. its not bad but I dont know if I am limited by the motherboard to raise the CPU frequency more (max:500 Superb1 QDI)

I don't see a problem with those temps. But if you want to go over 500 you might have to increase your voltage which will add to your temps. Before de-capping and lapping my setup my K6II would run 100X5.5 almost stable at 2.7v, now it's perfectly stable at 2.5v

What are your fsb and multiple limits for your board? Did you put the paste both between the sink and coin and the coin and chip?

[thodoris]

to eobard

well, i applied the thermal grease in both sides of the core and heatsink.

As for the limits of this M/B is 133mhz for the bus , 2.5 for the voltage and the multiplier goes up to 5.5

Now i am running the system at 124*4, 2.4V

I am thinking about the copper coin that i used..how big should it be ? the greek drahma is like an english pence .. and how thick as well should the coin be ? ? :)

[Phil]

Have you tryed without the coin as it's disputable how effective copper inserts are, and something as small as a penny doesn't strike me as something that would help, your just making it have to transfer heat through the heat transfer compound again which is not as good a conducter of heat as the heatsink

[thodoris]

to phil

when i used the coin the actual temperature rised more than 7-8oC ..and climbing but i stopped the procesure..

well i think that the socket A cooler that i am using is better off without the coin ..and i was trying to think any idea but without coins this time :)

[adamtekh]

i would like to know how to take off the heat plate ?

i can do 133 * 5.5 and 3.5 v

[eobard]

Originally posted by thodoris
to eobard

well, i applied the thermal grease in both sides of the core and heatsink.

As for the limits of this M/B is 133mhz for the bus , 2.5 for the voltage and the multiplier goes up to 5.5

Now i am running the system at 124*4, 2.4V

I am thinking about the copper coin that i used..how big should it be ? the greek drahma is like an english pence .. and how thick as well should the coin be ? ? :)

124X4! H3ll I'd love to be able to do 124X4! Sure your cpu speed is up only 50mhz but a 24% boost to the fsb is massive!!! Doing it at a lowly 2.4 volts is pretty impressive too. You might get a better cpu speed by dropping the fsb and upping the multiple but I'd leave it where its at. I'd only look to add to the multiple without dropping the fsb at this point. Without temp probes I just assumed my machine would do better with a copper insert. I have a higher limit now but I never really tested the sink (properly) lapped without the coin. I think I'm gonna give it a try myself. I'd like to see your numbers temp wise comparitively just so I have something factual to go on.

As for taking off the cap here's a picture below. You can't cut in towards the center of the chip without damaging the surface resistors or the core so when cutting the epoxy you need to make sure to cut only at the corners. Cut each corner with a sharp knife and it's easy to pop off.

[adamtekh]

thanks man

im surprized to see so many ppl with k6-2/3 CPU's

could u recomend a good HSF?

[eobard]

Originally posted by adamtekh
thanks man

im surprized to see so many ppl with k6-2/3 CPU's

could u recomend a good HSF?

From personal experience no, I'm still using the one that came with my cpu (box not oem) but "FRANK" has an even better overclock than I have on his chip and according to his sig he's using a Global Win FOP32 so maybe you should get one of those. Maybe you should send him a private message asking what his advice is.

[thodoris]

eobard if this help you are free to try it :) some results from the overclocking i did..

the transfer rate of the memory went to a top 988mb/s with the 124*4 config .. :)