find a fake from user uploaded picture to cpuworld

[hugo929]

http://www.cpu-world.com/sspec/SY/SY060.html

[Malyshh]

Is it mistake?
http://www.cpu-world.com/CPUs/80287/Intel-C80287-3.html

Intel C80287-3
Frequency (MHz) 5

[frag_]

I think it must be 6 MHz.

[gshv]

I will check the datasheet, but I think that 5 MHz is correct. The 80287 runs at 1/3 of external frequency. The 80286 runs at 1/2 of external frequency. If external frequency is 16 MHz, then the CPU will run at 8 MHz and the FPU will run at 5.333 MHz.

Gennadiy

[Malyshh]

gshv i've got Harris 286-25 with external frequency 32MHz!!! And i can change quartz on the MB and take 25 MHz.

http://www.cpu-collection.de/?tn=0&l0=md&l1=1984&l2=Intel
http://www.cpu-museum.de/?m=Intel&f=Math+CPUs