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Doesn't look like an '040 on there, so probably a cache card. Just my two cents.

My soldering skills are beginner-level and I managed, even with a bobo battery-powered soldering iron. They are tiny though. I was a bit more bold. Just take your time. Completely forgot about Powerwindows, I even used to use it back in the day.

I would suggest it. I've been meaning to move my ZuluSCSI to one of those. WD Purple are one of the SD cards I know of with wear leveling. "High Endurance" itself doesn't really signify anything, though.

Neat (y)

Honestly, I'm not surprised they didn't try to implement the weird multi-processing of the multi-604s since they were such an edge case.

Pretty much nothing, really, except some edge cases. But ... You did get to say I have TWO processors in my machine. That was something back then.

I wonder if that processor card in the PowerExpress Rom jpg was a dual 604ev card.

I want to second that. I would definitely pay for a 475/605 L2 cache card/thingie.

I think Steve Jobs actually calls out that weird need to make their own Apple-version of commonly available hardware/software in one of his keynotes. You'd think it would have been cheaper too, since Apple was pretty strapped for cash in the 90s.

I know that overclocking the "High Performance" cards from the 604ev powered 8600 and 9600s to 400MHz was a thing. I don't know if they had success getting to 450MHz+ on those chips, though. It'd be neat if we could tie some L2 cache to them and run them in a Beige G3 or B&W. I'd love to see...

Someone leaves it up to cause suffering and misery. We wail as we look at all the stuff somebody should have bought and stockpiled. We didn't know then that all that stuff was going to be unobtanium later in life. Woe, woe to use. Hear our lamentations.

Nah brah, the 475s/605s can go up to 136 (128MB with 8 on-board). I've heard of some going to 256+ with a SIMM-doubler of some sort.

I believe IBM just used the same socket for some of their PowerPC-powered servers.

I don't remember seeing that option, except on a few macs here and there. I've always heard that you couldn't disable it, due to it being embedded in the rom (hench the upgraded ROM being able to disable it).

Some people have taken their 475/605s up to 50+ MHz too. Getting rid of that loooooooooong ram check made me check my board again. Nope, still no ROM slot. I don't know if an accelerated video card would be necessary. With max vram, you can get 8-bit 1180x870 that's pretty quick in my...

I know there's an article somewhere where someone ran one in their beige G3, but it suffered from the lack of L2. I had one that I fitted to my Powerlogix carrier in my Powerbase. I never ran it though. Didn't want to take the chance on the one upgrade that works in my Powerbase.

If you can snag a Powerlogix z-force ZIF card, that'l work on all the processor slot Macs including the often-overlooked Powerbase. I think Daystar's one worked too, but only the first generation/version. That is if you have a bunch of zifs laying about. You could even throw in a 604 zif if...