Mark Rode wrote:

> I am thinking about upgrading an old 486DX33 with 30 pin simms. I have no
> manual or identification for the board.
> I have a Intel 486DX2 66 that I am thinking of putting in it. I know the 33
> and 66 run at the same clock speed so any DX33 should be able to run a 66
> without any changes....right? This has a CPU board that isn't a Ziff
> socket....I haven't replaced one of these yet......how much or a pain are
> these to upgrade? Do you just manually pull them out and push them in....or
> is there a trick to it?

The trick is to patiently and evenly pry it out. If you have a chip puller it
might be easier but if not a thin screwdriver will do. It's best if you have
the board out of the case when it comes time to install the new chip. You might
need to apply enough force to install it that could crack the board if it's not
laying flat on a hard surface.

> The 30 pin memory array is the usual 8 slots.....at present there is 1 meg
> in each slot. Do all 30 pin setups allow for mixing the groups of
> four.....can I leave 4 megs in and replace 4 with 4 meg 30 pin simms or do
> some 30 pin boards require particular memory configurations.

I think it's pretty much a crap shoot. I've had some that allow mixing and some
that don't. Here's where the manual comes in handy <g>

Good luck!

Jose