Sounds hairy, max vcore for 1.0GHz Coppermines is 1.74~1.79 V. I'd better get another mobo with VRM 8.4 that can work with lower voltages.

I think absolute maximum voltage for the Coppermine core is 2.1V. (I would not use anything over 2.0V)
I have been running Coppermines @ 2.0V for extended periods of time without issues.

1.8V should be fine as long as you have a decent heatsink with a working fan.

TELVM wrote:

Sounds hairy, max vcore for 1.0GHz Coppermines is 1.74~1.79 V. I'd better get another mobo with VRM 8.4 that can work with lower voltages.

getting another (decent) mobo is not so easy here, and I would really like to keep as much as possible the hardware I already have alive, it didn't look to scary for me because some coppermine came at 1.75v stock, so 1.80v sounds reasonable overall if:

Skyscraper wrote:

I think absolute maximum voltage for the Coppermine core is 2.1V. (I would not use anything over 2.0V)
I have been running Coppermines @ 2.0V for extended periods of time without issues.

1.8V should be fine as long as you have a decent heatsink with a working fan.

yes cooling is also a concern, with the slot adapter the space is limited for the cooler, and it sits over the northbridge and very close to the memory slots

anyway, my idea should work right?

pinmod (the socket on the adapter, VID1 to VSS) a cheap adapter like this
http://i59.tinypic.com/n3kq3n.jpg

or it would be preferable to mod the contacts from the slot/adapter?

thanks for the answers!

I can second that 1,80V is close enough to the stock 1,65/1,75V range to work.
If you have a 1,75V CPU, and change VID1 to zero, you should get a 1,85V request.
If you, in adddition, change VID0 to 1, it becomes 1,80V.

This may be a show stopper though: My P2B does not like slotkets without a voltage clamp chip. I have the exact same slotket and it won't boot with it. At least not with a celeron 466MHz.

There are a few things you may also consider:
- Some slotkets have no voltage jumpers, but have space reserved for them. In that case one can add the pins with a soldering iron.
- Replace the VRM chip on the board with type HIP6019BCB. That is what I did on a P2B v1.04, though the desoldering was not easy.
- Like you said, One can also tape-mod the VID request of the slotket fingers:
Here are my stored notes on that:
Convert VID signal 0 -> 1 by taping a finger (That is easy)
Convert VID signal 1 -> 0 by taping and grounding (Grounding Motherboard side I guess... have not done this myself).
On a Slot 1 cartridge locate these fingers: VID4=A121, VID3=B119, VID2=A119, VID1=A120, VID0=B120