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A64 + 948U = Higher temps, need help

K

killboy

Weaksauce
Joined
Aug 16, 2003
Messages
110
So i went from an Athlon 64 stock heatsink with the stock paste to a superb Thermalright 948u copper heatsink, with AS5!

Guess what, my temps haven't changed AT ALL! They are exactly the same and i'm freaking out!

I spread a thin coat of AS5 evenly... the sticker from the HSE is removed, the fan is blowing air onto the HSE. I'm freaked out by this, the only thing i can think of is that maybe it doesn't matter what HSE i put on there since the Athlon heatshield isn't conducting enough heat, and that maybe the only solution is to remove it... but I don't really want to do that if possible, I don't want to break my chip, and the german site i found on how to do it wasn't really convincing.

Any ideas on how to fix this?

By the way, it's a Newcastle 3200+ @ 1.675 volts @ 2400 mhz and i'm getting 61-62 degrees celcius full load. And like 45 degrees idle.
 
Ok..... well as i suspected, the original A64 HIS wasn't making proper contact, so no matter what i did, it stayed warm.

Anyways, I took my courage in hand, and worked for about 45 minutes at cutting the glue off the edges of my A64. I finally got the heatspreader off, cleaned it, and then applied AS5 to it.

Now, i just put it back into my machine and the temps now read 28 degrees idle and 44 FULL LOAD. HOLY CRAP!

45-28 = 17 degree DROP at idle
64-44 = 20 degree DROP at load

I can't believe it... and I swear i'm not making this up. And the AS5 hasn't even had 10 minutes to settle in!

I'm so happy right now, i'm going to o/c this badboy to manly speeds now!

(btw, every single test/temp up to now was done at 10x240=2400 mhz @ 1.675 volts)

Bottom line, some people may already have great contact with the HIS and won't need to remove it, but for those who are getting high temps, TAKE IT OFF, it's worth the 45 minutes! (dude, it would be worth 2 hours work even..)

But be careful, I could see how I could of killed my CPU 5 times during this process :)
 
so...did you put the heatspreader back on or is your A64 going commando now (straight HSF to core contact)?

I wonder how much efficiency is lost by using the heatspreader?
 
let it also be noted that 1.675v for an AMD64 is pretty darn high.. when I put mine at 1.6 my temps jump up to 40c idle from 34c at 1.55
 
So did you put the heatspreader back on or is it straight heatsink to core contact?
 
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