AMD K5-PR133AFR

[maoxuezhu]

[debs3759]

Looks like an ABR that's had the B badly altered. It's the first PR133ABR I've seen with revision C (and the datecode falls between some revision B with earlier and later datecodes).

[maoxuezhu]

My friend also has

[Marcin]

hey guys (and girls), check voltage ! Awesome CPU or only remarked FAKE ? I don't know

[gshv]

I've never seen any references to K5 133 3.3V. At the same time I don't think it's a fake. Overclocking the processor and marking it with lower core voltage doesn't make any sense.

Gennadiy

[Marcin]

I wouldn't see fake with higher voltage than standard 3.52V In this class mobile had 2,9V and lower. Maybe it was best part from production with done stabil tests ?

[debs3759]

According to the K5 datasheet, the I/O voltage can be 3.38 or 3.52 Volts, and the core can be either 2.50, 2.70, 2.93, 3.38 or 3.52 Volts.

My guess is that there could have been a 133AFR, but that it was a special order and as such not specifically documented (the docs that I have only indicate operating voltage codes of B, C, H, J and K, with F not being in the docs. It also gives some example OPNs, with nothing to indicate if the part numbers were actually used...).

Also, the docs indicate that revision E is model 0, and revision B is model 1. The docs I have don't mention Revision C (or any others) or Model 2 and 3 (which I believe to exist, based on info I have from many sources for CPUID code...). If anyone has docs other than 18766.pdf, 20092.pdf, 21062.pdf, I would appreciate copies

[gshv]

I didn't look at K5 datasheet yesterday when I posted. I looked at it today, and 'F' core voltage is indeed mentioned there in identification table in ordering information section. It's not mentioned in a "Valid combinations table" though. I would agree with Debs - it was probably a special order.

My K5 datasheet is publication #18522F. I uploaded it to my server:

http://www.cpu-world.com/pdf/AMD-K5.pdf

Debs, what's in 18766.pdf?

Gennadiy

[debs3759]

Oops, I didn't notice until I saw your reply - it should say 19766.pdf. The title page says:

AMD-K5™
PROCESSOR
Support for the AMD-K5
Dual Voltage Processor
Application Note

It covers Model 0 and Model 1, although IMO it is not as complete as it could have been. It is only 24 pages, but it does have some info that is not in the later and larger document that you uploaded, which has a lot of info not in the docs I have.

Thanks for uploading the file, I've just added it to my document set

19766.pdf can now be found here

[mtx500]

[docata-china]

ABX
GOOD

[picur10]

I found this manual:
www.acrosser.com/download/Quick%20manual/1579V141.PDF

This mentions the K5 AFR cpus at the setting of AMD cpus. So it seems true.