SGS Thomson 6x86 P166+

Nitro 64V | Pentium 166 View next object

Identical to the Cyrix PR166+ except for the branding. Cyrix is the designer of the M1R-core but didn't have manufacturing plants for their chips so they initially out-sourced it to SGS Thomson (for the 90+ and 120+ models). Eventually they switched over to IBM's manufacturing plants.

Apparently SGS Thomson stayed in the picture as they brought the later Cyrix' M1R-chips (manufactured by IBM) to the market with a SGS Thomson branding.

Specifications

Core / Codename

M1R

Clockfrequency

133MHz

Front Side Bus

66MHz

Multiplier

2x

vCore

3,52V

L1 cache

8KB+8KB

L2 cache

None

sSpec

?

Chip date

9651

Stepping

?

Socket

PGA296

Transistor count

3,3M

Condition

CPU only

Engineering sample?

No

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