Oldest computer I currently have is a Macintosh SE SuperDrive. Oldest PC I own is a HP Presario 4508. That thing only had one ram slot and could only max out at 48MB, so it couldn't even run Windows XP. Though I do have a slightly newer machine that ran at 800ish Mhz (not sure of it's exact speed), but the mobo has 2 ram slots (both these machines used PC133 RAM) and could go to 1GB. I only have 128MB in it right now and that's the machine I use for transferring data to the old Macintosh.
Both the PCs have USB ports, so they don't predate the USB era.
Picture of my Macintosh SE:
It also has a SCSI Zip drive connected. I have a parallel version for the old PC I am currently using for transferring data to the Macintosh. (I hope to get Windows XP running on that machine at some point once I get more ram for it)
And yes the Macintosh SE still works. Original parts except for the hard-drive. It's been replaced with a 80MB Apple drive that came from a different machine. I originally bought it for $77 shipped from eBay. Not a bad deal since it also came with a Asente Network PDS card installed which is a rare find for this machine. I ended up trading the network card for a mouse and hard-drive. Keep in mind finding 50-pin SCSI drives for vintage Macintoshes are an expensive endeavor on eBay. (Most go for more then $40+ even for the tiny 20-40MB capacity drives. Which is insane since I have once found a Macintosh LC III on eBay with a hard-drive already installed for a lower price then most of the 50pin SCSI drives I've seen. So hard-drive prices are definitely inflated for some reason.
Good thing my Mac came with that rare network card, or I'd still have a machine with no mouse or hard-drive.
The zip drive I snagged off eBay for only $14 shipped which is also a good deal since most of the ones on eBay are missing the cords (mine came with all the cords needed to use it) and are selling for $20-$30 on average. The parallel zip drive I got as part of the trade for the network card as well as 2 zip disks. The drive was missing the ac adapter though. I just use the one from the SCSI version as the drives use the same adapter.
I used to own a few older PCs but they ended up getting thrown out because I didn't have the room for them anymore. They just aren't worth as much as the old Macintosh machines.
I still have the old 30 pin ram simms I pulled from the oldest PC I had before I threw it out, so they weren't completely wasted. That pc I forgot what specs it had, but it used the same type of ram my Macintosh SE uses, so that means it was quite old. Though that doesn't beat the oldest PC I ever owned and that was a massive all in one design PC with built-in monochrome CRT and two 5 inch floppy drives. That thing was built in 1985 or something and was actually older then me.
(I was born in 1987)
I no longer have it though. Left it behind when we moved as we couldn't take everything with us. That along with a broken Macintosh Classic, Macintosh Plus, and a Macintosh Peforma 520. The Classic and Plus had broken CRTs as I had accidentally broke off the small glass nub at the end of the tube when working with the neck boards. I was probably 17 or 18 at the time. Nearly 15 years ago I would guess. Though I had the Classic since I was 10-12.
The Peforma 520 (also in all-in-one type Macintosh) was a nice machine and was the newest Macintosh I ever owned at one point. Sadly I think I fried the SCSI controller on it as I had attempted to plug a second hard-drive into it. At the time I didn't know SCSI needed proper termination and drivesr IDs set. Normally the first drive would need termination resisters removed while only the last drive in the change needed the termination stuff. That and they need to be on unique drive IDs (usually set by jumpers). CD-ROM drives are usually the first in the chain on a Mac. At least I think it was. (this Mac had a caddy based CD ROM drive, so the drive was useless to me.
)
So that one would have been a more involved repair or would have needed an new logic board. So would be a more expensive fix then the others.
I regret leaving those behind because if I still had them, they would be easy fixes as the Classic only needed an new CRT and the Plus had a minor issue with the motherboard cable needed to be angled the right way before it would turn on. (it too would need a new CRT too)
Of coarse The Classic is among many of the older Macintoshes that are known to have capacitors that have gone bad. So if I somehow still had the machine, it likely would have had to have it's capacitor's replaced by now.
Either way I'm sad I no longer have them. I pretty much got them all for free and they would be worth quite a bit now if they were fixed.
Xdqwerty
AncientBoi
He/them/IT does