Cyrix does in fact make (or used to) make a 5 volt 486dx2. I have two of them, 66 and 80 mhz. As a bonus, they have a bonded heat- sink and do not require a fan.
The SX to DX upgrade will probably be as simple as "plug it in and turn it on," only if the existing SX is a pin grid array package. If the SX is surface mounted, or socketed but the same kind of PLCC chip that can be surface mounted, forget it. --Brian Borg JD Thomlinson wrote: > > Currently Intel is the only manufacturer selling 5v 486 chips. > It *should* be a straight drop-in, no jumper changes required. > > A *very* old motherboard *could* have a problem supplying enough > current for the doubled chip. But I haven't seen that happen yet, > and I've upgraded a number of machines. > > There might be a problem with the motherboard going from SX to DX, > depending on the chipset on the motherboard. But, again, unlikely. > For the <$40 these chips are going for it's worth trying. > > Cyrix and AMD make 486DX2s but they are 3 volt. This would require > changing motherboard jumpers, if your motherboard supports 3v chips. > > Either way, if you're going to max out an old box you might want to > do it reasonably soon; 486 pinout chips and 30 pin SIMMs will soon > be history. > > Best regards, JohnT > -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .
