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Article #620

Re: Cyrirx6x86-166P+: The Fastest PC for DOS/Windows World

#620
From: Anthony de Vries
Date: Wed, 03 Apr 1996 14:30
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Dana H. Taylor Jr. wrote:
> 
> >It's okay, Intel has the P55C coming out by the end of the year, with
> >the new MMX instructions, as well as larger Icache and Dcache, so the
> >performance per Mhz will improve as well.
> 
> I just bought a Cyrix P120 (100MHZ) 686. I have it over-clocked to 120
> MHZ. (20 MHZ greater than what it should be at) It goes super fast! I
> only paid $209 for the CPU and $189 for an ASUS PCI motherboard. I am
> very happy with the performance so far. It goes a lot faster than my
> Pentium 100 at work. Any way, my question is : Is it dangerous to
> over-clock the CPU? Should I set it back to 100. Will my system
> over-heat?
> 

YES!!!!

It can be very dangerous to overclock the CPU.
My brother thought he had bought an Intel DX2-66 over year ago.
He had no problems at all the first 8 months, and after that some
times some (windows) programs would crash after a while. (two hours or
so)  (Well who would be surprised?)
But problems increased, up to a point where OS/2 couldn't be loaded at
all, Windows crashed after some minutes and any DOS4GW games crashed
almost immediately.  DOS real mode programs had no trouble at all!!!
(Tornado and Pinball)

It turned out that the chip was an OVERCLOCKED AMD Dx2-50....
Clearly as the problems had gotten so much worse the chip has been
damaged internally.  It did run ok on 50Mhz again, but rather than take
the risk that it was allready too much damaged, so that the problems
would come back, we decided to just put a new DX2-66 in it. (A real one
this time.)  

ALL problems we ever had with programs crashing or anything else are
gone! All works ok again.



So even if your processor seems to work OK when overclocked, that
doesn't mean it will do so in 6 months still. You REALLY can damage
the chip, even if it seems to work ok.


Anthony.

P.S. a friend had bought a similar computer. While he didn't have much
problems, his ray tracing programs always crashed after a while.
He checked, found out he had an overclocked DX2-50 also, and also bought
a new real DX2-66.  His programs never crash anymore.
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From: Anthony de Vries <A.H.B.deVries@student.UTwente.nl>
Subject: Re: Cyrirx6x86-166P+:  The Fastest PC for DOS/Windows World
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