Re: 486SX33 -- 486DX2-66
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] .
Re: 486SX33 -- 486DX2-66 why not -- 486DX4-100?
[About upgrading a 486SX-33 chip.] I wonder, did the original poster consider a 486DX4-100? If you are going to spend some money, this would definitely be a more noticeable change. Intel has (used to have?) 5V 486DX4-100 chips that can without modification be plugged in any old motherboard that can support a 5V 486DX-33. You might have to change a jumper if your previous chip was a 486SX-33. Eric -- E.L. Meijer ([EMAIL PROTECTED]) | tel. office +31 40 2472189 Eindhoven Univ. of Technology | tel. lab. +31 40 2475032 Lab. for Catalysis and Inorg. Chem. (TAK) | tel. fax+31 40 2455054 -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word unsubscribe to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .
Re: 486SX33 -- 486DX2 66 ??
At 08:42 PM 5/24/97 -0400, you wrote: Hi, I have here a 486sx33 and i would like to know if i can change the cpu for a dx2 66 ... In the specification of the board, i seen that a 486 sx2 66 A 486SX/33 and a DX2/66 are both 5 volt chips, so that's probably ok. Just be sure to check your motherboard manual for jumper settings, since there will probably be differces between the two processors' settings. Good luck! Tim - LINUX 2.0.8 i486 Because reboots are for upgrades!! - Please direct Email to: tjobrien(at)traveller.com -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word unsubscribe to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .
Re: 486SX33 -- 486DX2-66
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 - Improvement succeeded each other so rapidly, that machines which had never been finished were abandoned in the hands of their makers, because new improvements had superceded their utility. Charles Babbage 'On the Economy of Manufactures' 1832 -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word unsubscribe to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .
486SX33 -- 486DX2 66 ??
Hi, I have here a 486sx33 and i would like to know if i can change the cpu for a dx2 66 ... In the specification of the board, i seen that a 486 sx2 66 is supported. A mathematics coprocessor is also supported. Thanks in advance for your help ;) Dany Dionne -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word unsubscribe to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED] .
