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Chapter 2
2.2.2 INTEL PENTIUM w/ MMX™ ™ TECH (P55C) CPU
The Intel Pentium w/ MMX™ Tech (P55C) CPU is offered with dual voltage supply
- 2.8V for core and 3.3V (I/O) interface. The following is the marking for identify
the CPU type. (The following diagram is provided as an example only. It does not
necessarily indicate a valid product marking.)
2.2.3 AMD-K6/K6-2/K6-III CPU
The AMD-K6 CPU family requires dual voltage power for operation. The AMD-
K6/166, 200 require a voltage of 2.9V core and 3.3V I/O. The AMD-K6/233
requires a voltage of 3.2V core and 3.3V I/O. (The following diagram is provided as
an example only. It does not necessarily indicate a valid product marking.)
Operating Voltage
2.2V
2.4V
2.9V
3.2V
6
Fig. 2b CPU Description
(Top Side)
Fig. 2c CPU Description
(Top Side)
I/O Voltage
3.3V
3.3V
3.3V
3.3V
Core Voltage
2.2V
2.4V
2.9V
3.2V
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