ookamithewolf1 wrote:Trank wrote:
Its an American Megatrends motherboard from 1993.
American Megatrends is not the mainboard manufacturer, it's a BIOS software company. Most boards from 1986 to 1992 use AMI Bios.
On topic - running a 3v CPU at 5v will kill it. I've actually encountered this back in the day - people installing 3.3v CPUs in 5v only boards. The machines seemed to run for anywhere between 7 to 30 days, but after that they would either get unstable or fail altogether.
If you insist on using that particular mainboard, you can find either 486 overdrive or 586 upgrade chips that run at 5v.
ookamithewolf1 wrote:I'll be running it with Win95 and 256 megs of Ram, so it'll be a beast PC (well, circa 1995 at least).
Old 486 mainboards have a memory limit of 64 to 128MB of ram so I highly doubt you'll be runing 256MB in it. Most sistems have 4 x 72 pin simms with a maximum density of 32MB / slot (on boards way newer then your 1993 5v only witch I'm betting only supports 16mb / slot) Even if it would possible, it would run like crap because most 486 boards can barely cache 64MB of ram, let alone 128 or 256.
I'm only saying this so you won't make the mistake of buying expensive 64 mb server simms only to find they won't work in your board. Besides, there's nothing you could possibly run on a 486 that would take advantage of more then 32MB of ram.