POWER5 chips extensively use a
In addition to the switching power, leakage power has become a performance limiter. To reduce leakage power, the POWER5 chip uses transistors with low threshold voltage only in critical paths. The POWER5 chip also has a
2.1.3 The POWER chip evolution
The
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| POWER4+ | |
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| 1.2 to 1.9 GHz | |
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| Models 270, B80, and |
| POWER4 | p615, p630, | ||
|
| POWER3 SP Nodes |
| 1.0 to 1.3 | |||
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| p650, p655, p670 | |||
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| GHz | and p690 | |||
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| 333 / 375 / | p630, p650, p655, | ||||
64bit | SP Nodes | 450 | 600 / 750 | p670, and p690 | Note: Not all | ||
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Power3 | pSeries p620, p660, | processor speeds | |||||
| 450 | ||||||
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| 200+ | and p680 |
| available on all | ||
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| models | |||
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| F80, H80, M80, S80 |
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| 340 |
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| RS64 | 262.5 | H70 |
| SOI |
| |
32bit | 125 | S7A |
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| S70 |
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604e | + SOI = | |
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332 / |
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375 | Copper = | |
F50 | ||
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POWER4™
0.18 microns
1.0 to |
| 1.0 to |
1.3 GHz |
| 1.3 GHz |
Core |
| Core |
|
|
|
Shared L2
Distributed Switch
2001
POWER4+
0.13 microns
1.2 to | 1.2 to |
1.9GHz 1.9 GHz
Core Core
Shared L2
Distributed Switch
POWER5TM
0.13 microns
1.5 to |
| 1.5 to |
1.9 GHz |
| 1.9 GHz |
Core |
| Core |
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| Shared L2 |
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| Mem Ctl | |
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Distributed Switch |
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2004
Figure
22