Hello, Roy.
I've been meaning to write since way back on 11/21, when I overheard you
and Pascal Schmidt talking about - -

 RJT> Apparently the speed can go up there quite a bit,  the package was
 RJT> wrong.    Looks like if I were to get my hands on a K6-3 chip I
 RJT> could maybe go all the way up to 500MHz or so.  They do say that
 RJT> going to a FSB speed of 83MHz is "overclocking the chipset" but
 RJT> don't seem to think that's a problem.

OK, I've read about taking older Socket 7 boards and hardware hacking to
get around the cpu core voltages and clock multiplier jumper settings
which they were originally designed for, but not for a PCChips board.
The one I read about was for Asus P55T2P4, which had Intel HX chipset.
That internet info you got able to be sent as an email attachment?  I'd
like to get a look at it.

Not that I think there is much danger of you springing for a K6-III chip
anytime soon - - last I saw,  a K6-III 450 sold at Ebay for $40 plus
shipping.  But K6-2 of the speeds up around 450-500 are sometimes
now selling at Ebay for fairly reasonable prices.

 PS> I think the 500 and 550 MHz K6-2 versions want a 100 MHz FSB (at least
 PS> my 450 MHz wanted that). Slower versions can do with a lower frequency
 PS> (66 MHz), using a higher clock multiplier. I don't know whether a 500
 PS> MHz K6-2 would want to run at 6 * 83 MHz.

Yes, K6-2 will let you play with the clockmultipliers - - I have a K6-2
475 in this box (meant to run at 95 x 5) and I'm only running it at 400
(100x4).  I can't say I recall ever seeing a Socket 7 board which had
jumper settings for clock-multiplier of 6.  AFAIK, the K6-2 line topped
out at 550, and K6-III at 450.

The writeups I saw about hacking and overclocking old Socket 7 boards
which were originally designed for chips down in the 200-233 MHz range
strongly recommended mounting a cooling fan over the voltage regulator
circuits for cpu.  Of course, a lot of the faster chips (e.g. K6-2
500) draw a good bit more power than something like a P200 MMx,
for which these older boards were originally designed.

- - -  JimH.

... Computer Hacker wanted. Must have own axe.
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