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That's pretty cool. That's the original 3Dfx card for Macintoshes. It's the one that started it all. I had one in a Power Computing clone back in the day that saw a lot of Quake Team Fortress and Myth: The Fallen Lords. That card gave hope to Mac users everywhere that they weren't going to be...

You have a G4 in a Nubus machine? I had no idea anyone ever made such a thing. That's bananas.

Yeah, that sort of thing with @cy384's socket design converted to a super simple little PCB would be very straightforward. Socket on PCB, through pins pressed into mold w/ metal contacts in it.

@jeremywork what's the underside of the XLR8TOR look like where it makes contact with the onboard chip?

My current thinking is that the sweet spot might actually be a blend of the XLR8TOR approach with the approach @cy384 took in the Ultimate Centris 650. Basically a little fitted block that grounds the stock chip's enable pin and exposes a socket on the other side to swap and plop in different...

That's exactly the kind I used to have! The XLR8TOR one. I had it as part of a bundle that included an L2 cache module and a 601 heatsink w/ peltier plate on it (seemingly the same as the one that comes stock on an 8100/100. Though in a 6100 case the peltier hurt more than it helped unless you...

I'd like to take a whack at recreating some of these "clip-on" variable speed overclocking devices. They seem like a very good candidate for 3D printing a very, very simple circuit design. I used to have one from "XLR8" in a 6100/60 about 25 years ago that clocked the machine to 80+ MHz. I just...

I've got a couple of the Apple PCI card cables on the way. Someone around here was making a breakout box PCB for the PDS variant cards, but I can't find the thread anymore despite my having posted to it. Whoever that was, I've got some cards and cables I could lend to the effort of making PCI...

Yeah, PowerComputing and Radius also had Nubus-era clones.

Agreed on the Quadra 650. Great machine. That's a very cool Formac card! Any idea what the graphics chip is under that heatsink? Also, interesting that it takes a SIMM.

Replied in DM too, but... yep 👍. You figured it out. The slot on the back is for cache (mine has a 128k module). Mine came from (and will go back into) a Color Classic II. So, ostensibly it works fine with a 33 MHz bus too if you wanted to do the LC III to LC III+ mod to your machine. I don't...

Yeah, I made some AppleScripts for BinHex encoding/decoding things easily both directions. Basically little "droplets" that I use to drop files into that then automatically go to the FTP server properly encoded.

FWIW, I've found FTP on my local LAN to be the most trouble free and reliable way to migrate files around between all my machines. I'm fairly certain that Synology supplies an FTP daemon for their NAS solution. Just make sure your Synology is firewalled off from your WAN connection (which you...

I've got a 150 MHz machine I can try them in. I've also got an XLR8 MACh Speed G3 upgrade that I can dial down the bus speed on via DIP switches. The two non-working ones are from a PowerTower Pro 250 and a PowerCenter Pro 210. They had stock 50 MHz and 60 Mhz default bus speeds. The two...

It's definitely socketed, it's just a very weird socket that makes it very difficult to extract a CPU by anything but the most patient & delicate means. Lemme take a couple photos and some rough measurements.

Based on the specs, all 4 modules should be able to trivially handle a 50 MHz bus. I tried them all with a stock 250/50 604e card. No difference. The same 2 work and the same 2 don't. I tried a 225/45 card I forgot I had laying around. No difference. I've considered trying to do a simple reflow...

I'll check the speeds. The two (1 working, 1 not) that I was fiddling with last night were seemingly identical to each other. Which makes sense considering they came out of the same make/model of machine. But, I'll take a closer look. The machine I was testing them in had a CPU upgrade in it...

So... I've got four 1MB L2 cache modules here for PCI Power Macintoshes & their comparable clones. Two of them work, two of them don't. There's nothing visibly wrong with the ones that don't work. When installed they just prevent machines from booting. Power comes on, but there's no startup...

Well, I'm finally getting around to cataloging all the things I've acquired over the course of the last year or so. I dove into vintage computing stuff as a pandemic hobby. It all started with purchasing a NeXTstation Turbo and an HP 48GX, and then it spiraled out of control as evidenced by my...

It needs to be 5V FPM or EDO. I have a pile of it here that I'm not currently using all of. Let me see what's in my stash.