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The Arctic Silver thermal adhesive is quite strong and shouldn't have any problem holding the heat sink and fan.

Here's a SoundBlaster compatible ISA card: https://blog.tindie.com/2020/07/pci-blasterboard-stands-in-for-a-sound-blaster-on-old-machines/

Very nice! If I had any Macs that I'd like to keep original, I'd definitely do that. Very clean :)

Amiga 3000 machines and the i386SX Bridgeboards used ZIP memory, which was dense for its time and allowed for static column RAM for faster access in m68030 machines. Otherwise, they were a huge pain - hard to find, difficult to install without bending pins and usually expensive. They were handy...

Yes, my mistake. I just remember it's a Quadra 630 form factor. I have one of these with 196 megs. The Quadra 610 / 650 / 800 can use larger SIMMs with a custom ROM, yes, or when running NetBSD. I tried looking in to ways to warm reboot the system so that Mac OS would see the larger SIMMs after...

i80386 are 32 bits, with 32 bits of external addressing, so there's no 16 megabyte limit. The i80386SX has a 16 bit data path and 24 bit address bits, so can only access 16 megabytes. The OrangePC 200 series have either a 386SX or a 486SLC, which is pin compatible with the 386SX. Both of these...

Not exactly. The Quadra 630 could take 196 megs (one 128 meg SIMM, one 64 meg SIMM, plus four on the board), and if you're running NetBSD or can write your own ROMs, you can get 260 megabytes in a Quadra 610 or 520 megabytes in a Quadra 650 / 800.

You can use the FreeDOS bootable floppy image from here: http://www.freedos.org/download/

The last time I bought SIMMs, I bought half a dozen 128 meg SIMMs for around $10 apiece. Two were used in a Cobalt Raq, and four are waiting for when I recap a Quadra 800 motherboard so I can have a system with 520 megs. The price difference should be negligible, but I was thinking that...

Funny - I posted a serious question on Reddit about the best small case speaker precisely for my restored & recapped LC II. I used tantalums with a plastic diaphragm speaker (which can be seen here), and the audio sounds wonderful. Granted, though, I have no idea how the same speaker...

One 128 meg SIMM would give you two banks of 64 megs, with less fuss.

If you bought all five FPUs from the same seller, then you likely have five identical relabeled non-FPU chips. Likewise, the m68040 is probably relabeled. Shame the seller, get a refund, and try different sellers.

For me, the simplest way to deal with current dates is to use the Network Time control panel to use NTP to set your time: http://main.system7today.com/software/networktime/networktime.html

Since the last device is the hard drive, then the hard drive needs to be terminated. Many Apple-shipped SCSI CD drives didn't have termination, anyway.

The order on the SCSI cable matters. Whichever drive is last needs to have termination enabled. Have you checked that? Plus, blusnowkity is right - if the capacitors are going, that'd definitely explain issues.

There is no benefit, unless the CPU is a different mask. If you want a more overclockable / cooler running m68040, you can get a later mask CPU, like the K63H or L88M, which is made on a .57 micron process, compared with the .8 micron of the m68040s made from 1989 through 1995 (except the E26A...

Moving to 33 MHz is still completely doable, and is 133% of the stock speed. Some folks on here are trying to make a new run of QuadDoubler-type boards. I wonder how far they've gotten...

The QuadDoubler and other clock doublers basically run the m68040 at twice the clock speed when no bus activity is going on. Luckily the m68040's 4K cache made it possible to run stuff for little bits of time without accessing memory, so these were useful some times. I've been meaning to...

The motherboard has to be able to support the same speeds as the CPU in most instances. This is why the Quadra 700, which is older, can't quite go to 40 MHz or beyond - things stop working because the timings are too far off. Whether an m68040 is marked as a 40 MHz part really doesn't matter...

Perhaps if you're doing lots of files all at once, it'd be easiest to use AppleScript to batch convert using BinHex 5.0.