pc too hot,shutting down!aargh!

[paxrax]

2800+, 512 ddr

problem happens when encoding divx to anything else,anyway, ive fitted a bigger, better heatsink and fan, but problems still happening.
heatsink was a sharkoon cpu cooling kit, hps2.
took the old one off and silicon paste to the processor as per instruction and plugged clipped it on.plugged it in and made sure the fan blows towards the heatsink, but still no joy. also have a case fan pulling cool air in.

shuold i have cleaned anything off the processor b4 i refitted it or not?
do you think it could be a processor prob?

any ideas? im thinking of selling the bugger to someone who doesnt do any encoding and buy another base unit!!!

[nightheart]

you did clean the thermal paste or pad off the CPU, before you install the new heatsink, right?

[paxrax]

just took it off and cleaned it up about an hour ago, seems to have made some difference. also took the case fan off the side taking in air and put it on the back blowing out air. loks like another couple of quiet case fans and i should have it sussed! fingers crossed!

[BlackDiamondJr]

made sure the fan blows towards the heatsink, but still no joy.

The fan should blow away from the heatsink. It's function is to dissipate the heat absorbed by the heatsink into the case where it is in turn exhausted by the case fans.

[lhys09915]

The fan should blow away from the heatsink. It's function is to dissipate the heat absorbed by the heatsink into the case where it is in turn exhausted by the case fans.

i thought cpu fans blow onto the cpu.

[paxrax]

according to the distructions fit the fan to the heatsink with the arrow pointing towards it, so the fan cools the heatsink. had a look at the one i took off and that was the same???????

[emailrob]

Make sure the processor is seated correctly as well

[lhys09915]

try it with the side panel off.

[BlackDiamondJr]

i thought cpu fans blow onto the cpu.

This is an age old debate.
Apparently it depends on the device. There are some (usually stock) HSF setups that will blow unto the heatsink and then there are others that will blow away from the heatsink. The best advice is to follow the instructions for the given device.

My experiences as an overclocker has mostly been with aftermarket or third party HSF setups. Most are setup with the idea that you really cannot cool the heatsink but you can reduce the hotspot by distributing the heat that the heatsink dissipates.

Some like the Alphas are even shrouded and is vented outside the case.

I guess it depends on the device.

[paxrax]

anyway, update, looks like its not so bad now, running @about 55 now and up to about 63 when encoding. still only 1 case fan pulling out the warm air but another 2 on order, 1 to pull air in and another to add to the other one extracting.fingers crossed.

[xdeity]

thats still pretty hot, what is your fan/hs rated too.

i always have the h/s fan pointed onto the heatsink, with an exhaust fan pointing out of the systemat the back of the puter and a fan blowing into the puter on the front or side.

also, when you cleaned the cpu (i am assuming you did) what did you clean it with and did you get off all of the gunk from the old heatsink, and remove the gunk that came as standard on your new one, and replace it with a reputable compound such as arctic silver.

for cleaning a lot of people use nail varnish remover, but that has other chemicals in it. I always use isopropyl? alcohol, which is pure and gets rid of more of the ingrained gunk from the cpu and heatsink. This is even more important if you have run the system with the standard gunk on cause it melts into all the tiny grooves on the cpu and most things won't get it out, even tho it may look like it has.

[paxrax]

aah, no, just wiped it over, isopropyl? where do you get that stuff from? and does arctic make that much diff? i just used the stuff that came with the heat sink.

[Neo]

Nail polish remover, rubbing alcohol, and other are not powerfull enough to remove the micro debris that are still left in the metal.

You should use acetone. It is the most powerfull. But treat the surface area with some rubbing alcohol after you've finished with the acetone.

[dragonmaster]

could it be a power issue instead of overheat issue?

[paxrax]

how do you mean? the cpu temp reading i gave is from speedfan. how might it be a power issue?

[lhys09915]

are you using the thermal pad that comes on most heatsinks?

[handyguy]

How many fans do you have? Should be able to put in about 4, one in front, one in back in a pci slot, one on chip & the power supply has one.

[paxrax]

thermal pad, no, didnt come with one, just a tube of thermal compound.

1 fan at the mo but dont the 4 pin ones come m/f so i can connect it to the other one i have?

whats the power issue crack?

[lhys09915]

i use a 6400rpm adjustable speed fan.temp idle is 33 under load with farcry 39

[paxrax]

i use a 6400rpm adjustable speed fan.temp idle is 33 under load with farcry 390.


where did you get it from bud? is it noisy?

[dragonmaster]

i mean the computer doesn't have enough power and it reset the computer.... because i would guess loading the CPU with that much thing to do and let say have a small power supply ... 200watts or 250watts... thing of those kind... and the power supply will reset the computer if that's the case... just want to throw in another scenio but probably not the case if the CPU is heatting up..

[xdeity]

just outnof interest, when you say u used a tube of thermal paste, exactly how much did you put on, and onto which parts of the cpu.

you should have a thin layer on the cpu core and on none of the other bits of the cpu, and you should also make sure that your h/s is sat correctly, there are many illustrations of what it should look like sat correctly all over the internet, in fact there may be one in a sticky on this site somewhere, have not got time to look at the mo tho.

[paxrax]

just a little on the centre onf the chip, hetsink is sat right, temps seem to be fine now i have added another couple of fans.