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G1 - the First Generation
CPU
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601
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601v
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Speed
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50 - 80 MHz
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100 - 120 MHz
105/125 Spec92
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Size
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2.8 million transistors
.6µm process
11x11mm = 121mm2
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2.8 million transistors
.5µm process
74mm2
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Power
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7-8W @ 66MHz
3.6v
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4-6W @100MHz
2.5v
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Cache
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32k unified
8-way associative
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32k unified
8-way associative
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Units
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3 i/cycle
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3 i/cycle
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Date
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10/92
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3/94
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The 601 is the first generation of the PowerPC processor.
It is a good processor, and has been used in a variety of
machines.
It was designed as a transition chip from IBM's full
Power Architecture to the PowerPC -- this allowed IBM to
transition many of their workstation and server machines to
these single chip processors (though it was not binary
compatible). This meant that there were a few legacy
instructions left in (baggage), so it was not quite as
efficient as it could be (probably less that 5% die space
wasted). But still, this small amount of legacy
"inefficiency" encouraged quick evolution to the Second
Generation chips (the 603's and 604's).
Timeline
- 03/93 - 601 release at 50, 60, 66 and 80 MHz
- 03/94 - Apple shipped 6100, 7100, 8100
- 03/94 - 601v die-shrink (quantity in fall)
- 08/94 - 601v in quantity for 100 & 110 MHz
- 03/95 - 601v in quantity for 120 MHz
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