Is that a Cyrix 6x86 P133+ (runs at 110 MHz) or a 133 MHz Cyrix 6x86
(which is more commonly refered to as the P166+)?
If its the first (P133+, 110 MHz), be advised:
1. the speed is quite similar to the Pentium 133 (so you wouldn't gain much)
2. the Cyrix FPU unit is significantly slower than the Pentium, so math-
intensive software (CAD, scientific, etc) and a few games (Quake) would
suffer
3. not all motherboards support the 55/110 MHz frequency (so it may not work)
4. the Cyrix chips draw more power and disipate more heat, so you need a
good power supply, MB voltage regulator, and cooling
5. the chip is only worth around $135 US now, while the P133 goes for $230
(not a very good swap) :(
6. the Cyrix 6x86 is not compatible with some software (in particular, the
NASCAR2 demo [although Papyrus says the final product will work with
the Cyrix] and Rendition-ready ICR2-3D [a patch has been released, so
it is now functional, but still has a few minor bugs])
If its the second (133 MHx, P166+), be advised:
1. Points 2, 4, and 6 above still apply (I've heard the P166+ FPU is
comparable to a P90-P100 FPU, I've also heard of an AutoCAD benchmark
that runs 1/3 the speed of a Pentium 166)
2. You would get a decent speed boost (maybe 20 percent?)
3. The chip goes for $200 US now, so you're still giving away a little,
although perhaps gaining value for your usage
For more info on the Cyrix, check THE (unofficial) Cyrix info page:
http://www.ionet.net/~rbdavis/
If you plan to go Cyrix, check the Cyrix site for a motherboard
compatability list:
http://www.cyrix.com/
Or hang out in
for more CPU info than you ever wanted to know! :)
Good luck!
PS - I'm a ICR2/NASCAR/GP2 fan who's upgrading my DX2/66. Just wanted
to share some of the info I've digested in the past month. I ended up
deciding to go with a Pentium 133 and the Intergraph Reactor, so ICR2
and NASCAR2 will fly, GP2 will become more palatable.
Pick one or more: Model Rockets (competition-NERCB) / PCs (even Atari!) /
Papyrus ICR-ICR2-NCR / Who needs a life when you have multiple non-lives?