Adapting AlphaPEP66 to socket problems

[Scathe]

I'll keep it short, and succint:
I had an Abit BH6 board, slot 1, with my Celeron 1.1GHz/PEP66. Everything was nice and cool, till the motherboard burned out in a freak accident. I replaced the board with an Asus TUV4X (Socket 370), but my PEP's footprint wouldn't fit inside of the capacitors. So I adapted it, as shown in the photo below. However, at 1100MHz, it cooks at 72 deg C. At 733MHz, it simmers at 60 deg C. Funny, right? I've even got the fan "blowing" rather than "sucking", and not much difference is seen. It seems that this fan/sink won't adapt well to a socket with this powerful a chip, perhaps.

So, any suggestions would be appreciated, or perhaps a hyperlink to a new heatsink I could slap this fan on, or even a whole new assembly, if need be. Sigh. It never ends.



Specs:
Celeron 1.1GHz 100MHz bus w/ AlphaPep 66 fan
640MB RAM (2x256, 1x128) PC 133
GeForce 2 64mb 4Xagp
NIC 10/100 (PCI)
SB PCI 128
Asus TUV4X board (Socket 370)
realmagic dvd decoder
pci parallel card
--less important--
6x dvd (samsung) 32x cdread
16x12x40 yamaha cdr
40 GB WD 7200
60 GB WD 7200
floppy 1.44, of course

[Celemine1Gig]

Well I think you still have the PEP66 with the little plastic feet on the bottom, right??? If that's true, then you have to remove these plastic feet or just sand them down until the CPU core is making perfect contact to the heatsink. I had the exact same proble with my Alpha PAL6035 and my new MSI 815EPT Pro. The feet on the cooler were too high, so that the CPU and the heatsink didn't get good contact.

I hope I could help you!

[The Doors]

Hi Scathe,
This is a great heatsink, but is made for a slotket, installed in vertical position, when installed on a socket370 is in horizontal, and tends to go down for the great height & for the weight, so the contact with the Cpu Core isn't perfect at all.
My suggestion, for personal experience :) is to install many layer of isulating tape on the down corners of the Cpu to sustain the HS and get a perfect fitting.

I hope it helps you ;)

[Scathe]

I'm not sure I follow the idea behind that method. The taping method, not the filing of the feet.

[The Doors]

You have to apply many layers of isulating tape till you reach the core height, that's all :)

[Yodums]

Or you can add a copper plate so it's making perfect contact...

[CrystalMethod]

Question: Do you have the IHS on that CPU?
I can't remember if that Cel has it or not. that could be part of the problem, if it does. They aren't really all that flat, and they're another thing inbetween your heatsink and your CPU die. Something isn't right with your setup, as I have the almost the same setup (I even think I have the same PSU, enermax 300W?), and my temps have never gone above 38°C at full load (with the sides of the case on). The only difference is that I have a celly 800, my fan sucks air away from the heatsink, and the shroud is facing 180° in comparison to yours.

[Mr B]

You might be on to something there, CM...I think the 1.1 and 1.2 Cellies do have the IHS on them...

The PEP66T is also known for having the holddown clip bend, and this will make the HSF sit not level on the CPU die. It's also remotely possible that in "rearranging" the HSF for this application, that the clip was put in backwards...a Senior member that used to post here frequently did that one time...(no, not me...lol) His temps skyrocketed until he found that one, and then they dropped right back to normal.

I'd pop off the PEP66 again, and check the orientation of the clip, making sure the bend is sitting directly over the die, that the clip isn't bent, and go from there...

Does the 1.1 have the IHS cap over the die?? That might have something to do w/ it, if that's the case.

**actually, I did have the clip in backwards the first time I got my PEP66T....but I really had a hard time mounting it, and it definitely looked unlevel...I never fired it up before I discovered that....did you have a difficult time hooking the clip down (other than the tight fit with the capacitors)??

The PEP66T is a decent HSF...kept my P/// 700E quite cool, up to 968MHz @ 2.1v. A 1.1 Celley shouldn't get that hot...something is definitely amiss with the HSF positioning on the die....**

[Scathe]

Belated thanks, you guys. It appears that the clip was on backwards; I removed the assembly, applied new Arctic, and flipped the clip. I'm down to 40-40.1 deg C. Thanks a lot.

Scathe

[Yodums]

Glad you resolved the problem just before Xmas.

Have Fun
Happy Holidays