XP-120 Hotter than stock cooler

StevenG said:
when i touch the heatsink or heat pipes they are barely warm... 30'c max i would say. duff sensor?
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No, the fact that the heatsink isn't making proper contact with the cpu means that the heatsink isn't going to actually get warm as it's not transferring any heat.
 
I don't think you proc is cooking in there. I think it'd be pretty obvious if your heatsink was concave or bent or whatever.

I'd say a dodge temp sensor is a plausible possibility.

edit:

I know its a pain but if you could try the cpu & hs on another mobo we could put this to rest.
 
dnt have another one and i dont think i know anyone that would let me put it in theirs?

this still doesnt explain why the temps go up with the XP-120. must be bad contact... the base looks flat enough to me when i put a metal ruler across it
 
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z0mbi3 said:
I don't think you proc is cooking in there. I think it'd be pretty obvious if your heatsink was concave or bent or whatever.

I'd say a dodge temp sensor is a plausible possibility.

edit:

I know its a pain but if you could try the cpu & hs on another mobo we could put this to rest.
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I think he actually posted saying that yes it is concave? So the fact is that it is :confused:
 
The contact is not good enough for some reason as illustrated by your 'very sharp' pic ;)

If the heatsink is working as it should it sould be warm, if it is cold it isn't taking the heat away from the CPU.

I would take it out and check the underside of the contact area with a known straight object to see if there is a problem there, if not it might be the retainer that is faulty.

The sensor might be off but it is still showing the difference between stock and XP cooler
 
don't forget to do the straight object test!

edit:

been reading what you've posted over. I'm a bit tired at the mo so I do miss stuff.

Need to have a think on your temp readings before and after.

When you power on do your temps warm up at all or are they around the same fixed number?
 
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TaKeN said:
Put a ruler or something across the base, to check if its level or not :)
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Read the thread :( :( :(

I have already suggested this way before you posted.

As for the heatsink being cool to the touch, my arctic freezer is also cool to the touch. Maybe 25-30c.
 
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i would say there is a 8th toa quarter of a milimeter gap when i put the ruler from corner to corner and egde to edge
tried taking a pic but its that small its less than a pixel on my camera so it wont pick it up
 
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StevenG said:
just re seated the heatsink 1 final time. it was 2'c under at idle and its 4-8'c over on load. this is with a akasa amber at full rpm

so looks like it needs to be lapped. make some off the edges try and get the centre to actually hit the IHS...

the guy i bought it off has e-mailed Thermalright and they say that as i have overclocked the fan will not work to its full potential.

could someone please give me some temps with a opty 146 at 2.8 and an xp-120.
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Opteron 146 1.62v 2.7Ghz with akasa amber on it.
47'c idle, system 35 load (prime95 * 2) = 60'c.

My old case was better at cooling but used noisy 80mm fans; I got a P180 but still havent been able to put the side on due to needing a 90 elbow for my pump.

x800gto @16 pipe watercooled 550/550 37'c core 41 ambient.
 
Dutch Guy said:
You used too much AS and the contact isn't good enough, the layer should be almost translucent and in your case the extra AS should have been spread out more if the contact would have been good.
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Agreed, and before the OP laps it DO READ a lapping guide because u mention something about wearing a corner down and its just not the way its done at all.
 
i dont think lapping a sink like that is gonna make much difference. we already know the contact is crap. from the description the middle is the flat part and the edges are off. We already know its the middle that isnt making contact when it should be, and you dont need a lot of contact to cool an a64 efficiantly.


Be honest, if it was making proper contact you should see an imprint of the cpu. when i last pulled my scythe off, i saw the writing on the IHS imprinted on the heatsink, and thats how it should be. All that to me says there isnt enough pressure on the cpu, or the heat pipes are faulty.

still, you can try to lap it.
 
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so what do i do? lap it or try using a THIN layer of AS5? or stick to my stock and lose out the money i paid for it

EDIT: the guy who sold me it doesnt think there is a problem as he used it to cool his 3500 and it was fine. he claims that my overclocked opteron puts out too much heat. my argument is that the XP-120 is a PERFORMANCE heatshink and should out perform a stock amd cooler which has no heatpipes. and is tiny!!!!

EDIT2: when i felt the amd cooler it didnt seem that hot when the temps were at 40'c
 
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