12 Apr
2008
12 Apr
'08
5:47 p.m.
Curtis H. Wilbar Jr. wrote:
Cameron Kaiser wrote:
My guess is he is running the front side bus at 50mhz (as genuine
DX50 systems do) vs the 33mhz fsb that the Am5x86-133 is designed for
(33.3*4 = 133, 50*4 = 200).
Exactly.
I *love*
486DX-50 machines. I've had some success in the past
installing Am5x86-133 chips in these machines running at 200MHz.
What did you change on the board to get the 200MHz speed? I have a
-133 here that I'd love to try that on.
I wouldn't have imagined that part would handle a
50% overclock. I
have not found many processors in my limited overclocking experience
that exceed 20% overclock w/o fiddling with "excessive" cooling,
increasing core voltage, etc.
Considering that the Am5x86 ran reasonably reliably with no heatsink at
all, running with a minimal heatsink and fan, it's not that big of a deal.
I have been running a 2.4 Prescott P4 at 3.0Ghz... but
once in a
while until it is warmed up it will blue screen and reboot.... so
I've backed it off to 2.8 to see how it goes.... I'm wary of jacking
the core voltage... (although it isn't a northwood so I don't have to
worry about SNDS). I may inherit some 2.8GHZ Prescott P4s with
800mhz fsb (vs the 2.4/533 I have now OC'd to 2.8)... so may go with
one of those :-) (plus they have HT (woo... moan...).
Back then, processors weren't so high-strung from the factory.
Peace... Sridhar