early K6 Revision B variants research

[Jedi08]

After adding some more K6 to my collection I checked them for differences:

what I found:

on week 9 and 10/1997 PR2 K6s AMD is not in line with rest of print
all PR2 marked chips seems to be made by IBM No, found this one from Debs: http://www.ukcpu.net/Collection/z-Sold/Processors/AMD/x86/K6-Family/K6/Images/K6-PR2-200ALR_RevB_25755Ne.jpg
markings on ceramic 25755 (most with laser, some with golden print) + 2300XXXXXX (only laser marking) + CANADA, CA or USA (laser) + I (most with laser, some with golden print)
earliest K6 without PR-Marking is week 13/1997 here: http://www.chipdb.org/img-amd-amd-k6-166alr-2.9v-no-core-text-293.htm

Earliest 200MHz Rev.B chip without PR-Marking made by AMD week 23/1997 here: http://www.chipdb.org/img-amd-amd-k6-200alr-rev-b-no-core-text-3567.htm
And a strange 233MHz chip with laser speed marking in upper right corner

[CPUShack]

here is my rev B 166

[Jedi08]

Thank you, but I think this one was made by IBM...

[CPUShack]

you might want to remind people how to tell who made them

[Jedi08]

I think they were made by IBM when:

laser marking Canada/CA/USA and I for IBM in the right corner
no Malay markings

[Tetrium]

[Jedi08]

here we are:

[Tetrium]

Ah, there it is

Did you notice the heatsink on the IBM ones is a little bit smaller then the AMD ones?

[Chook]

Here is another variation. No Malay marking so made by IBM?

[Barren Realms 007]

What would be the significance of a:

200ALR
2.9V
C 9736
Mal

[Tetrium]

[Windmiller]

Great information, I always thought the K6 marked with an I were made by IBM and this info really backs up that idea!

[Jedi08]

here my other variations:

show yours...

[Tetrium]

I didn't clean up the thermal goo too well, sorry

I took an extra pic of the tiny '200 Mhz' in the top right corner as it was impossible for me to capture it all in a single pic.
It's not 166 but it is an IBM





Edit:How do you do the fancy thing with the filesize and the text in it?

[picur10]

Tetrium: When you write a reply there is an "Add an attachment" part of the editor.

Jedi: I'll check my collection on weekend.