Socket S1 is a 638 pin, low profile, ZIF, 1.27mm pitch socket.[1] It replaces the existing Socket 754 in the mobile computing segment (e.g. laptops) as well as the microPGA Socket 563 form factor.
Socket S1 CPUs can include support for dual-channel DDR2 SDRAM, dual-core mobile CPUs, and virtualization technology, and compete with the mobile Intel Core 2 processor series.[2]
Socket S1 revisions
Different generations of processors used various pinouts of the S1 socket; processors were not necessarily electrically-compatible with each socket even if they fit mechanically.
Socket S1g1 or just S1
Platforms: Kite and Kite Refresh
CPUs: K8 core, HyperTransport 1.0, DDR2 memory
Socket S1g2
Platforms: Puma and Yukon
CPUs: K8 Revision G core, HyperTransport 3.0, DDR2 memory
Added:
Split-power planes and linked power management support
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