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60 MHz
273-pin ceramic Pin Grid Array
Pentium 60 MHz microprocessor was the first from Pentium series, and it was the slowest one. The CPU was shipped in pin grid array package similar to 80486 - the CPU bottom side looked like a bigger version of 80486. Like older 80486 processors, the Pentium 60 required 5 Volt. High core voltage and big die size were the primary reasons of the processor running very hot even with factory supplied heatsink. Short term fix for this problem was adding an integrated heatspreader that helped to dissipate the heat (see other pictures). The heat problem was solved in the next generation of Pentium chips by switching from 0.8 micron to 0.6 micron manufacturing process, and reducing core voltage to 3.3 Volt. |  |
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60 MHz
273-pin ceramic Pin Grid Array with heatspreader
Boxed Pentium 60 processors (and 66 MHz processors for that matter) had different naming convention. Their name had a standard prefix "PCPU", which means "Pentium CPU", followed by core voltage identifier "5V" (for 5 Volt parts) or "3V" (for 3.3 Volt parts) and CPU speed in megahertz. There were not as many boxed Pentium 60 processors as OEM processors manufactured, this is why they are much more difficult to find these days. |  |
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66 MHz
273-pin ceramic Pin Grid Array
Pentium 66 was introduced at the same time as Pentium 60 - in March of 1993. The CPU had the same 1x clock multiplier as the 60 MHz part, but was slightly faster due to faster front side bus. To make the processor more stable at higher frequency Intel increased core voltage from 5V to 5.25V. As a direct result of this, the processor ran even hotter than Pentium 60. |  |
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75 MHz
296-pin ceramic staggered PGA |  |
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75 MHz
296-pin ceramic staggered PGA
Boxed version of the processor | .jpg) |
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90 MHz
296-pin ceramic staggered PGA |  |
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90 MHz
296-pin ceramic staggered PGA |  |
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100 MHz
296-pin ceramic staggered PGA |  |
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100 MHz
296-pin ceramic staggered PGA
Boxed version of the processor |  |
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120 MHz
296-pin ceramic staggered PGA |  |
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120 MHz
296-pin ceramic staggered PGA
Boxed version of the processor |  |
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133 MHz
296-pin ceramic staggered PGA |  |
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133 MHz
296-pin ceramic staggered PGA
Boxed version of the processor
Top view | .jpg) |
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150 MHz
296-pin ceramic staggered PGA |  |
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166 MHz
296-pin ceramic staggered PGA |  |
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166 MHz
296-pin ceramic staggered PGA
Boxed version of the processor
Top view | .jpg) |
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166 MHz
296-pin plastic staggered PGA |  |
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200 MHz
296-pin plastic staggered PGA
Top view | .jpg) |
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