An S7 voltage interposer should be pretty easy. You can make your own design, just learn KiCad basics on YouTube and start designing.

Doornkaat wrote on 2022-01-31, 12:44:

An S7 voltage interposer should be pretty easy. You can make your own design, just learn KiCad basics on YouTube and start designing.

Up to a point. These are lots of very fast signals very close together. I'd be concerned about capacitive effects etc. The voltage part is indeed trivial though.

If someone did make a good design, I for one would be making it. Managed to break a crucial pin on my Evergreen interposer so stuck without one for present :'(

dionb wrote on 2022-01-31, 12:46:

Doornkaat wrote on 2022-01-31, 12:44:

An S7 voltage interposer should be pretty easy. You can make your own design, just learn KiCad basics on YouTube and start designing.

Up to a point. These are lots of very fast signals very close together. I'd be concerned about capacitive effects etc. The voltage part is indeed trivial though.

If someone did make a good design, I for one would be making it. Managed to break a crucial pin on my Evergreen interposer so stuck without one for present :'(

I have an S7 interposer and all signals are just going straight through. Only Vcore, ground and BF0-2 are handled by the interposer and it only needs four layers with the inner ones being Vcore and ground.
Apparently it is that easy.🤷‍♂️

They're extremely short traces on an interposer board. There isn't much of a worry there.

are there even any sources of new old stock socket 7?
Back in the day I modded 370 boards for coppermine compatibility by opening the socked up and breaking pin receptacles, dont remember why but I think some pins had to be isolated from the board and that was the easiest way. Sadly I dont think this would work for power delivery.

rasz_pl wrote on 2022-01-31, 14:35:

are there even any sources of new old stock socket 7?

Yup, they're even on ebay.
peconnectors.com probably has some as well.

Question.

I’ve started a project for a socket 5/7 voltage interposer but have been distracted with other projects. And also honestly, kinda wondering about the logic of the direction that I took with it.

You, as one of the people looking for one let me pick your brain.

Originally I was thinking make the voltage signal as good as possible and use a really good regulator and build it on the interposer its self.

But here is the issue, assembly takes a lot of skill, and some of the parts are rather hard to find it turns out. A few years from now the parts I design it to work with may not be available at all.

So here is my idea:

Do the same thing with socket 7 that I did with the socket 1/2/3 interposer. And just make the pcb and put a tap on it for powering it externally. The parts required drops by a order of magnitude. The skill to assemble it goes down and the risk of not finding parts goes down a fair amount also.

So I’m kinda thinking that this is the way to go.

Or, instead of a fancy regulator like I made just using a linear style regulator super simple, small BOM, easy to make.

With the abundance of off the shelf adjustable switching power supplies available on aliexpress etc that could be just wired in it seems to be a better option.

Thoughts?

I want one for a Socket 4 board. They did exist but finding any actual pictures of said adapters is pretty much impossible.

cyclone3d wrote on 2022-06-19, 04:44:

I want one for a Socket 4 board. They did exist but finding any actual pictures of said adapters is pretty much impossible.

What are you trying to adapt? What into what?

i'm surprised that someone has not got into making repros of various socket/slocket adapters power leap made over the years. like even the powerleap ip3/t that thing goes for stupid money on ebay if u can even find one. plus 9 times out of 10 u gotta rig up the power cable because the people lost those. even the more basic ones that can just support the coppermine chips have become much tougher to get a hold of they pop up and sell right away.

Sphere478 wrote on 2022-06-19, 08:51:

cyclone3d wrote on 2022-06-19, 04:44:

I want one for a Socket 4 board. They did exist but finding any actual pictures of said adapters is pretty much impossible.

What are you trying to adapt? What into what?

Pretty much any Socket 5 and Socket 7 CPU could be run on a Socket 4 board.

See a list of the adapters that were made here:
http://www.pchardwarelinks.com/cpu_sock.htm#socket4

cyclone3d wrote on 2022-06-19, 14:21:

Pretty much any Socket 5 and Socket 7 CPU could be run on a Socket 4 board. […]
Show full quote

Sphere478 wrote on 2022-06-19, 08:51:

cyclone3d wrote on 2022-06-19, 04:44:

I want one for a Socket 4 board. They did exist but finding any actual pictures of said adapters is pretty much impossible.

What are you trying to adapt? What into what?

Pretty much any Socket 5 and Socket 7 CPU could be run on a Socket 4 board.

See a list of the adapters that were made here:
http://www.pchardwarelinks.com/cpu_sock.htm#socket4

Ah, gotcha. Yeah, socket 4 did have the 64 bit bus of the later sockets 5 and 7. The big issue is the physical layout and the use of 5v core and I believe 5v signaling. So a many layer design and smd construction will have to be done.

It should be possible to solve this with like bus transceivers or something. But not easily, not as easy as a socket 5-7 interposer.