First post, by Nemo1985
Another season another round up, I finally found a winchip and winchip2 cpus, give them a warm welcome!
Configuration:
Mb: Asus P5A rev 1.04
Ram: 128mb
Videocard: 3dfx Voodoo 3 2000 PCI
Hdd: Compact Flash Agfaphoto 8gb 233x with DMA enabled
Every cpu has been clocked at 100x2
For k6-2 CXT I used the 500 mhz version.
Wattage peak has been measured during dos benchmarks.
Quake v1.06
Quake 2 v3.20+3dfx and 3dnow patch. Map: demo1.dm2
Mdk2 Demo
Incoming demo benchmark
Cpu competitors:
Rise MP6
idt Winchip
IBM 6x86MX (Cyrix MII) v2.9
Cyrix MII v2.2
Intel Pentium
Intel Pentium MMX
idt Winchip 2
Amd K6
Amd K6-2
Amd K6-2 CXT
Amd K6-2+
Amd K6-3+
Every cpus has been underclocked to 100x2.
Results:
Comments:
Rise mp6: This cpu was a nice surprise, very low power consumption and very cold (hardly you get anything more than 40°C) probably can be passive cooled. I really like this cpu, not a best performer but still... the benchmark shows it is tie with Winchip2 despite this cpu does not support the 3dnow instructions.
The result of superpi is crazy, but I ran it twice to be sure and I had roughly the same result, I can't explain such result, maybe someone will...
I had an fpu error while trying quake booting directly to dos, but in windows it ran fine, the mb also complained about the low voltage, probably the bios do not like this cpu too much.
Idt Winchip: I found the cpu being unstable I do not know if the mb doesn't fully support it or if my cpu is somewhat damaged, it throwed some random general protections errors, I was able to complete all the tests.
Idt Winchip2: I had no stability issues with this cpu, it's not a best competitor but the improvement over the first winchip, it also supports the 3dnow extensions, the only non amd cpu that does it.
Cyrix\IBM cpus: I can confirm that they get hot like an oven. The v2.2 version has lower performance compared to the v2.9\2.7 counterparts. It is a best performer with alu applications but the fpu is still very weak
Amd: the difference between the k6 and k6-2 clock to clock are weird, in dos test they had the very same results, while in Windows mainly in 3dmark99 the difference is huge I suppose sometimes it is thanks to the 3dnow extensions but on the other hand I really doubt incoming take any advantage of it , interesting that the power consumption goes up of about 2 watts between k6 and k6-2.
I was unable to test the CXT version because the cpu internally remap 2x to 6x, if anyone knows how to it, I can test it in a later time.
Intel: Both Intel cpus show what happen when programs are optimized for a specific cpu or not. Great results in Quake, but bad in alu programs.