Socket S1
| Type | PGA-ZIF | 
|---|---|
| Contacts | 638 | 
| FSB frequency | up to 800 MHz HyperTransport | 
| Voltage range | ? | 
| Processors | Athlon 64 X2; Turion 64 X2; Mobile Sempron; Turion 64 (MK series only) | 
| Predecessor | Socket 563 Socket 754 | 
| Successor | Socket FS1 | 
| This article is part of the CPU socket series | |
Socket S1 is the CPU socket type used by AMD for their Turion 64, Athlon 64 Mobile, Phenom II Mobile and later Sempron processors, which debuted with the dual-core Turion 64 X2 CPUs on May 17, 2006.