P90 put in place of a 486 DX2(66)

[philipg]

I realize that the increase is probably not worth the effort but the computer is my nephews. I don't have the manual for the mobo and been having no luck locating it. My question is even though its set at the 486's speed would it be worth it to put the P90 in the computer or should I make another effort to find the manual on the net. I was thinking the Pentuim power may help the old machine with operating win95 better.

[ipetroianu]

It's no way to install a Pentium on a mobo for 486!

[LJE2]

As ipetroianu pointed out the P90 will not fit in a 486 motherboard, if you mean replacing the 486, DX2/66 motherboard and chip with a P90 chip and motherboard, if you have the old P90 mobo & chip lying around and want to swap it out sure there will be a noticable speed increase, not by today's standards but you will notice a difference, but if you have to buy the chip and board, it would not be worth it, you would be better off going with a new board possibily with onboard sound & video and a Celoron, or AMD chip, but with the Celeron you would have to buy new RAM, where with the AMD chip you could use the RAM from the 486, (assuming it is 72 pin FP mode or EDO and not 30 pin Simms) A motherboard that would allow you to use your old power supply (I'm assuming you have a case with an AT power supply, although there were some that were different) and 72 pin SIMMS with the new K62 or K63 chips is the FIC 503+, Soyo also makes a board that you could use and I'm sure there are others.

[This message has been edited by LJE2 (edited 06-30-99).]

[fishboy]

come on philipg, you know better then that! How are you going to get a pentium chip to work on a 486 board? Maby you might want to consider those overdrive (waste of money) chips. Just go out and buy a cheap socket 7 pentium board and put the P90 in that

[philipg]

I seem to have left out the fact that the mobo is a socket 3 and so is the P90.

Sorry for the misinformation.

[ipetroianu]

Please let us know how is working when you you are done.

[steves]

P90 = socket 5 (all >66MHz non-MMX pentiums in fact)

P60/66 = socket 4

486DX2 = socket 3

The only thing I can think is that you missed out the fact that it's a 83MHz overdrive chip and not really a P90 at all.

I'm confused by the info you are giving phil.

[philipg]

I plan on trying the chip this weekend, will let you know by Monday how it runs.

This is for Steves:

The 486DX2 can be either a socket 1,2 and will fit into a socket 3 but not the socket 4+. The P90 is a socket 3 chip.


I just wish I had the mobo manual to set the jumpers properly.

[philipg]

I hate to admit when I'm wrong but all this hype about it not being a socket 3 forced me to re-research what it really is. I'm sorry for my behavior to all those that said it wouldn't fit in a socket 3.

This is the processor id number: A80501-66 sx950, Iknow the 66 is the bus and core speed but its stamped P90, go figure.

On the other hand its not a socket 5 either its a socket 4. What a shame it works too. That old computer could've used the boost, without having to purchase a new mobo.

Thank you to everyone for your input in helping me SEE THE LIGHT. This thread is over.


[This message has been edited by philipg (edited 07-02-99).]

[MadMax]

Socket 3 Pentium that's NOT an ODP?
****, that's another cpu I've never heard of.
I have a P90 in my hand right now and it's definitely socket 5.

A80502-90 SX968
ICOMP INDEX-735
C5380449-0101
INTEL @@'92'93

www.erols.com/chare/sockets.htm (http://www.erols.com/chare/sockets.htm)



[This message has been edited by MadMax (edited 07-02-99).]