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I had a 3Dfx Voodoo 2 card and an 10 MB ethernet card installed in my C500. I was amazed the first time I saw Unreal running on that machine - a Mac gaming computer!

I owned a C500 for a few years. It was an improvement over the Performa 6360 it was based on, because it had more PCI slots and a faster CPU.

Sounds like replacing the capacitors is working. Great job.

I'm very surprised the Sonnet card didn't work. Are there any signs of capacitor leakage on the 6500 logic board?

In my experience, USB1 cards made by NEC work well on PCI Macs based on the 6400/6500. The source of this info was on www.xlr8yourmac.com I just learned this site closed down November, 2025 https://appleinsider.com/articles/25/11/05/xlr8yourmac-goes-offline-ending-an-era-of-diy-tinkering

Interesting program. FYI the latest Macfilm v2.0.11 was just released 2 weeks ago. All previous releases were from 2022 and 2023.

VH ratcheting crimp tool, insulated terminal anssortment and 18 AWG colored wire assortment ordered from Amazon. The crimp tool was only $14 - a Black Friday sale.

Thanks. I didn’t find the very helpful thread I mentioned in post #2 until today. I ordered the RPT60A today, along with the Molex crimps and connectors from Mouser. The RPT60A has a 50% tariff, making it cost about $26, which is still inexpensive.

I see this was already done and documented at https://68kmla.org/bb/index.php?threads/replacement-power-supply-in-quadra-605.41793/

Does the computer function? The plastic case looks to be in good shape - not broken. The plastic tends to get brittle with age.

I’m looking for a Performa 460 power supply, because I bought a recapped Performa 460 logic board. The going price for an untested unit on eBay is $80, while tested units cost $100+. I was browsing power supplies on Mouser and the Mean Well RPT60A would supply the correct power : Chassis Mount...

Just wondering how difficult it would be to use a Performa 460 board (LCIII) in a Centris 660AV case? The Centris PS and floppy drive work.

GTS 12 94V0 is the PCB manufacturer and 94V0 UL flammability rating. I’m guessing Apple had more than 1 PCB manufacturer.

Nobody has a 3Dfx Voodoo 2 card installed? Makes a huge difference.

Since you upgraded the memory, you might want to try the Classilla browser at https://www.macintoshrepository.org/1770-classilla

Nice haul. FYI it’s not a good idea to store formatted disks on or next to a CRT

Check the electrolytic caps on the Gigadesigns board - they may be bulging or leaked.

Sold a few hours ago

Wow - lots of good info. Thanks

FYI the LS-120 drive is not compatible with Mac 400k/800k disks