Heatsink too big for Duron core?

[Jugernot]

I just put a modified Globalwin FDP32 on my Duron (600@900MHz) tonight and have noticed the performance hasn't changed from the stock cooler (95F idle & 105-110F with load). I'm guess the reason I'm not getting any better readings is because the Duron core has such a small surface area.

What can I do to get my temps down?

Thanks
Jugs

btw: I'm using Circuitworks Silver heatsink compound and my case temp is around 71F.

 

[Mikewarrior2]

You're not getting the correct readings partially due to the thermistor, and possible partially due to possible clip pressure issues with the globalwin(did you tighten the clip at all?).

One reason for the thermistor errors, for example, is you could be a few degree's cooler, but because of the placement of the thermistor, it isn't showing you the true difference in cpu core temp. Still, i woudlnt' expect the difference to be very large between the stock heatsink(designed for socket A) and a modified globalwin.

It could also be that you're FDP32 is somewhat un-flat. I noticed that a lot of Globalwin FDP32s and FEP32s were manufactured kinda crappily(you'd get one that was fairly flat on teh bottom, and another that was completely screwed up). Flat heatsinks are even more critical when you're talking about a heat source as small as a duron/t-bird or p3 coppermine core.

Also, what mb/bios revision are you running?


Mike

 

[Jugernot]

I was figuring on the bottom not being totally flat so I lapped it before mounting. I also used a Socket A clip rather than the usually Socket 7 because it placed the pressure directly onto the core rather than across the back side of chip.

I'm using a Abit KT7 Raid with the UL BIOS.

Here are some pics of the heatsink:

http://www.techie-talk.com/reviews/template.html?cooling/heatsinks/Globalwin_FDP32_Mod/page3.html