megatog615 wrote on 2026-08-18, 22:44:

rasz_pl wrote on 2026-08-14, 22:52:

Shponglefan wrote on 2026-08-14, 15:50:

Current price of 370 Pin socket is about $10 USD from what I've seen not including shipping, tax, etc.

afaik PCBWay charges $0.05 per tht wave soldered pin = ~$20 just for soldering the socket

this is a sponsored product so likely there is a discount here

Discussing someone else's product pricing is certainly interesting, but ultimately pointless.
It costs whatever it costs.

BitsUndBolts wrote on 2026-08-17, 18:13:

Hey everyone!.

Q: .

How did you work around the 25mV/VID4 signal issue?
On Mendocino, it's needed for 2+ volt supply, while on Tualatins, it's present on certain models.
I have a 1.475V Pentium III, which means the signal on this pin is active.
Given that in some (or most?) PWM controllers VID signals aren't latched but change dynamically, a CPU like this will request 2.3V at boot.

shevalier wrote on 2026-08-19, 05:18:

How did you work around the 25mV/VID4 signal issue? On Mendocino, it's needed for 2+ volt supply, while on Tualatins, it's prese […]
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How did you work around the 25mV/VID4 signal issue?
On Mendocino, it's needed for 2+ volt supply, while on Tualatins, it's present on certain models.
I have a 1.475V Pentium III, which means the signal on this pin is active.
Given that in some (or most?) PWM controllers VID signals aren't latched but change dynamically, a CPU like this will request 2.3V at boot.

By default, VID4 is grounded. This way, anything above 2.05v is disabled. There is a 0 ohm resistor on the PCB that can be removed if one really wants to mess with overclocking and higher voltages, but you have to remove that resistor.

Manual Voltage Selection:
There are four jumpers for voltage selection on the HAWK 370. For Mendocino and Coppermine, you could set those jumpers to AUTO and use the CPU defaults (they don't use VID4).
Tualatin MUST be set manually using the four voltage jumpers as those chips use the new VRM8.5 instead of VRM8.4 used on most Slot 1 boards. The table for manual voltage selection is printed at the back of the PCB.

VID4 was introduced with 2.0v chips (Deschutes / Mendocino). Grounding VID4 encoded voltages below 2.1v.

BTW BUB, you know that in theory it's not impossible to create a dual socket slotket?

After 50 days of headaches getting the distances right...
Just wire one socket0 BREQ1<> socket1 BREQ0
The schematics and datasheets seem to indicate that BRQ1 is managed by CPU0

Just planting seeds....
MWUHAHHAHAHAHAHAHAHAAH!

That would be wild to make any old board into SMP

Power would be a headache. You'd need to build a VRM onto it.

Might be easier to just build a board. See sig. I have more converted designs.

myne wrote on 2026-08-20, 03:15:

BTW BUB, you know that in theory it's not impossible to create a dual socket slotket?

Is this even rarer than Tualatin slockets?

Any help on getting 440ex/lx to support up to Celeron 766MHz 66fsb cpu on one of these adapters or is it only for440bx?

marxveix wrote on 2026-08-20, 19:35:

Any help on getting 440ex/lx to support up to Celeron 766MHz 66fsb cpu on one of these adapters or is it only for440bx?

The PowerLeap PL-iP3 was able to work on those systems, no? If that worked on those systems, I suspect that this slotkey should handle them too. I suspect that it works fine on the 440zx & gx too.

Edit as pointed out later on in this thread, the 440lx and 440ex cannot do SSE instructions , and so have issues if a Coppermine processor tries to run those instructions. More info here: 440LX and Coppermine

QDI Twin Magic. This one looks like it was actually in use.

More pics from QDI TwinMagic

douglar wrote on 2026-08-20, 20:01:

marxveix wrote on 2026-08-20, 19:35:

Any help on getting 440ex/lx to support up to Celeron 766MHz 66fsb cpu on one of these adapters or is it only for440bx?

The PowerLeap PL-iP3 was able to work on those systems, no? If that worked on those systems, I suspect that this slotkey should handle them too. I suspect that it works fine on the 440zx & gz too.

I have two generic slot->370 adapters, one of them works and it boots up with Celeron 766 and bios detects it correctly, but voltage or something else dont like it and it hangs booting to win98.

douglar wrote on 2026-08-20, 20:01:

marxveix wrote on 2026-08-20, 19:35:

Any help on getting 440ex/lx to support up to Celeron 766MHz 66fsb cpu on one of these adapters or is it only for440bx?

The PowerLeap PL-iP3 was able to work on those systems, no? If that worked on those systems, I suspect that this slotkey should handle them too. I suspect that it works fine on the 440zx & gz too.

Seen on vogons people having problems with AGP not working on 440LX and coppermine. No idea how would that even be a problem, but it was.

Big Pink wrote on 2026-08-20, 19:03:

myne wrote on 2026-08-20, 03:15:

BTW BUB, you know that in theory it's not impossible to create a dual socket slotket?

Is this even rarer than Tualatin slockets?

Wow.
I would say so.
I didn't realise they existed.
Or if I did, I forgot long enough ago that I think I didnt.

The Twin Magic ( Re: Bought these (retro) hardware today ) only worked with their Brillian X 2 board ( https://theretroweb.com/motherboards/s/qdi-p6 … b2-brillianx-ii ). The GA-6RD7 never made it past its COMDEX 99 launch.

rasz_pl wrote on 2026-08-21, 01:17:

douglar wrote on 2026-08-20, 20:01:

marxveix wrote on 2026-08-20, 19:35:

Any help on getting 440ex/lx to support up to Celeron 766MHz 66fsb cpu on one of these adapters or is it only for440bx?

The PowerLeap PL-iP3 was able to work on those systems, no? If that worked on those systems, I suspect that this slotkey should handle them too. I suspect that it works fine on the 440zx & gz too.

Seen on vogons people having problems with AGP not working on 440LX and coppermine. No idea how would that even be a problem, but it was.

And the south bridge PIIX4 on those early boards was an early revision that could be quirky to down right buggy depending on what cards you used.

marxveix wrote on 2026-08-20, 19:35:

Any help on getting 440ex/lx to support up to Celeron 766MHz 66fsb cpu on one of these adapters or is it only for440bx?

Nobody is stopping you from getting them running on any slotket. But on the very first SSE instruction, you'll get a BSOD.
For Coppermine, you need at least a ZX.

This is specifically a chipset issue, and it cannot be fixed with any adapters or BIOS patches.

PC Hoarder Patrol wrote on 2026-08-21, 01:33:

The Twin Magic ( Re: Bought these (retro) hardware today ) only worked with their Brillian X 2 board ( https://theretroweb.com/motherboards/s/qdi-p6 … b2-brillianx-ii ).

I figured there was a catch with these, because if dual Socket 370 was so easy it could be engineered into a slocket then the Abit BP6 motherboard wouldn't have been so notable.

Big Pink wrote on 2026-08-20, 19:03:

myne wrote on 2026-08-20, 03:15:

BTW BUB, you know that in theory it's not impossible to create a dual socket slotket?

Is this even rarer than Tualatin slockets?

Probably something like this could (partially) justify the price of about 100 € for a ready-to-use product. And then again remains the question about motherboard's compatibility.

DangerMouse wrote on 2026-08-14, 06:28:

It's too expensive and a pain to assemble. It's easier to just mod a regular slotket. And there's no need to drill anything - that's a barbaric solution. Instead of drilling, you just stick a thin enamel-coated wire into the hole - for example, from earbuds.

The issue with AG1 raised in the video is way overblown - it'll work just fine even at 1.6V. Besides, some slotkets already have a linear voltage regulator on that line anyway.

easy path:)

I don't get the criticism of projects like this.
Original hardware is getting rarer and rarer and more and more gets hoarded away.
Having a brand new available alternative that's also potentially better then the originals is just awesome!
Now if we could just get this gang to do a Socket 8 to Slot 1 version with various biospatches I'd be in heaven.
I know there already are new made versions, but the gatekeeping on those is just........