🚀 go-pugleaf

s322007@student.uq.edu.au (Lisa Plahn) wrote:

>smiteq@gil.ipswichcity.qld.gov.au (Doug Smith) writes:

>>>You have to remove and replace the oscillator module on the motherboard.  
>>>It is a moderately fiddly soldering job.  I imagine a 66MHz machine uses 
>>>a 132Mhz oscmod, so to overclock you need somthing like a 160Mhz 
>>>oscmode.  I don't know if these are available after-market.  The highest 
>>>I have seen listed in 86MHz, which would be suitable for a 33MHZ machine.

>>The above gem of information is a beautie... and a first class way of
>>stuffing up an otherwise useable board.

>     Only if you're unlucky enough to not do the job properly.

>>DX2 chips fited to 33 MHz boards become... automaticly on boot... 66
>>MHz internal clock speed chips. DX4 CPUs are actually four times 25
>>MHz for those who cant add up and yes, you can over clock a DX4-100 to
>>130 Mhz by using a 33MHz. base but the chances of the chip being
>>reliable at that speed are not good.

>     Nope, DX4-100 are actually clock-trippled 33's, Intel has a bad
>     habit of confusing people who are stupid enough to try and figure
>     out their naming protocol.
>     cheers,

OK, I may have stuffed up on the finer points of Intel's
specifications but if you think a 132 MHz. crystal can be soldered on
to a 486 board and the board still work, you ought to look in the
mirror when you want to call someone stupid.

For your information, the CPU crystal is not the only source of timing
for a 486 and anyway, why do you think these chips are only able to
run fast internally? Its the bus speed that stops external
instructions dead in their tracks and no amount of overclocking will
change that.

As for doing the job properly; This, I imagine would start with doing
some research to determine if the airheads theory was practical...
Which it's not.

Changing crystals is not new, I've been doing it successfully for
years but what the airhead I responded to was claiming is science
fiction and your support of his proposal could result in some poor
bugger frying a perfectly good board trying to get it (not the CPU) to
run at 130+ Mhz.




Regards from,

Doug Smith B.S.c...........SMITEQ is a computer service company.