Specifications:
PVS32G1866LLK - PC3-15000 - 2GB Kit - 8-8-8-24 @ 1.9V PVS34G1600LLK - PC3-12800 - 4GB Kit - 7-7-7-20 @ 1.9V PVS32G1600LLK - PC3-12800 - 2GB Kit - 7-7-7-18 @ 1.9V PVS34G1333LLK - PC3-10666 - 4GB Kit - 7-7-7-20 @ 1.7V PVS32G1333LLK - PC3-10666 - 2GB Kit - 7-7-7-20 @ 1.7V
The firm also has Viper series DDR2 modules:
PVS22G9600ELK - PC3-9600 - 2GB Kit - 5-5-5-12 @ 2.3V PVS22G9200ELK - PC3-9200 - 2GB Kit - 5-5-5-12 @ 2.3V PVS22G8500ELK - PC3-8500 - 2GB Kit - 5-5-5-12 @ 2.3V