ins_aeas@jhunix.UUCP (Earle A .Sugar) (03/09/86)
I have heard that it is possible to speed up an IBM PC by replacing the
stock clock crystal with a faster one. Has anybody actually done this?
I wouldn't doubt that IBM designed the PC to run at a higher clock
speed and released it with a lower one to increase quality control.
If anybody has done this, how are various drivers (particularly
the disk drive driver) that use software timing loops affected?
Of course, if I really wanted a major project, I could have clock
speed cut in half when the disk drive is being active, but I doubt
that my boss would appreciate her PC being bastardized like that.
She is looking for a cheap way to speed up her PC, which is extremely
slow for the heavy database work she does. Because of university politics,
she has not been able to get an AT or a faster compatible.
If it is not feasible to just swap crystals, does anybody know of
a cheap speedup board that is reasonably priced (most seem to be
in the >$500 range). 8087 support is not necessary.
adthanksvance
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Earle A. Sugar
Disclaimer:"Nobody else here at JHU ever agrees with my opinions"
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This month's wise advice:
"Don't step on anyone on your way up the ladder; you might meet them
on the way back down"cramer@kontron.UUCP (Clayton Cramer) (03/20/86)
> I have heard that it is possible to speed up an IBM PC by replacing the > stock clock crystal with a faster one. Has anybody actually done this? > I wouldn't doubt that IBM designed the PC to run at a higher clock > speed and released it with a lower one to increase quality control. > If anybody has done this, how are various drivers (particularly > the disk drive driver) that use software timing loops affected? > Of course, if I really wanted a major project, I could have clock > speed cut in half when the disk drive is being active, but I doubt > that my boss would appreciate her PC being bastardized like that. > She is looking for a cheap way to speed up her PC, which is extremely > slow for the heavy database work she does. Because of university politics, > she has not been able to get an AT or a faster compatible. > If it is not feasible to just swap crystals, does anybody know of > a cheap speedup board that is reasonably priced (most seem to be > in the >$500 range). 8087 support is not necessary. > > Earle A. Sugar Funny you should ask. I just bought a speedup kit from MicroSpeed called Fast88. It works for me in my antique PC at 6.1 Mhz, and the technical support guy says that my DMA controller chip is flaky, which is what is preventing it from running at 6.7 Mhz. I will be posting a full review of this product in the next couple of days, as soon as I determine if the DMA controller chip replacement solves my problem.