Base 2
Base 2 | |
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Specifications | |
design type | PGA - ZIF / LIF |
contacts | 238 (19 × 19) |
Bus protocol | 486 |
Bus cycle | 25, 33, 40, 50 MHz |
Operating voltage | 5 V |
Processors |
Intel i486 SX (16–33 MHz) Intel i486SX2 (50–66 MHz) Intel i486DX (20–33 MHz) Intel i486DX2 (50–66 MHz) Intel Pentium Overdrive (63–83 MHz) and compatibles |
The base 2 was an evolution of socket 1 for the Intel Pentium overdrive and i486 DX4 processors.
Typical chipsets for socket 2 mainboards were the Intel 420 chipset (Saturn I) and the 82C480 from VLSI Technology . Socket 2 motherboards support PCI 2.0 and Fast Page Mode DRAM . To multiply the internal processor clock from the FSB clock , integer multipliers up to 3 × were supported.
The base 2 was replaced by the base 3 , which in addition to the 5 V operating voltage also provided 3.3 volts.