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Cyrix/VIA MII-PR433 Processor Review

Cyrix/VIA MII-PR433 Processor Review - PCSTATS
Abstract: What we are seeing today has probably never happened in the history of computing. Faster and faster CPU's are churning out of the fab plants at what seems like a weekly basis. Before we can even get out hands on the fastest processor out there, an even faster processor comes and takes its place before we know it!
 65% Rating:   
Filed under: CPU / Processors Published:  Author: 
External Mfg. Website: Cyrix Apr 12 2000   P. Masrani  
Home > Reviews > CPU / Processors > Cyrix MII-PR433

Benchmarks: SiSoft Sandra 99

SiSoft Sandra 99

In order to give you a better idea of the integer and floating point performance of the MII, below is a graph that shows you just that. The CPU Benchmark test was run under Windows 98 5 times on each CPU/clock speed setting and the result having been taken as the average of the 5 test runs.

Well there is your answer as to integer and floating point performance... The Cyrix CPU has its problems with FPU performance.
Overclocking and Conclusion
As mentioned earlier in this review, the MII-PR433 was manufactured upon a .18-micron process. Everybody seems to be getting excited over it as it means less voltage consumption, less heat and the result is greater overclockability. Previous generations of Cyrix CPUs have proved to be extremely poor overclockers.
Things have changed quite a bit since then. The core of the MII-PR433 operates at a 300MHz core with a 100MHz front side bus speed, hence a multiplier of 3.0x. I successfully overclocked it to 400MHz by keeping the FSB constant and upping the multiplier to 4.0x without any stability problems whatsoever. Furthermore, the MII would run at 450MHz but would crash frequently during normal operation.
This could be improved on possibly by using a better cooling device rather than the standard fan/heatsink combo that I am stuck on! ;) Anything higher than 450, irrespective of the FSB/multiplier combo used, the system just refused to boot. Increasing the voltage to 2.4V from 2.2V didn't seem to have any effect either. Considering I was able to push the processor by 100MHz certainly says something about the CPU. It is sure a refreshing change from the older generation Cyrix processors.

Comments / Conclusion

If you are looking out for a great gaming solution, you really need to look elsewhere. The MII's poor floating point performance pretty much prohibits one from the 3D action arena unless you really want to spend a lot more for a GeForce. I have personally used the CPU for a couple of days during testing and my usual web and office related work went along smoothly. I could barely tell that I was using a processor that is slower than the one that I normally use.
The best candidate for this processor would definitely a home / office user primarily running business type applications as they are considerably less FPU intensive. If you overclock it to 400MHz, you got business performance similar to a Celeron 333. The extremely low cost of the CPU provides affordability to users in just about any price bracket.

Just before I wrap this up, the "Joshua" processor is on its way to a dealer near you. This is the first new processor to see the light of day out of the VIA/Cyrix labs in quite a while. The "Joshua" offers features such as 256KB on die L2 cache, 133MHz FSB speeds, etc. Before you close your mind to CPUs that have the Cyrix label, take a look at this processor which is targeted to compete with Intel's Celeron CPU. VIA/Cyrix has a chance to grab a share of the entry level market with the Joshua and I, for one, am certainly more than excited to take a look at one...

< Previous Page © 2017 PCSTATS.com CPU / Processors News»

 

Contents of Article: Cyrix MII-PR433
 Pg 1.  Cyrix/VIA MII-PR433 Processor Review
 Pg 2.  PR Numbers Explained
 Pg 3.  Benchmarks: CPU Mark 99
 Pg 4.  — Benchmarks: SiSoft Sandra 99

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