HP 693157-001 - Intel Xeon Quad-Core processor E5-2407 - 2.2GHz (Sandy Bridge-EN, 10MB Level-3 cache, 80W TDP) Retail
HP 693158-001 - Intel Xeon Quad-Core processor E5-2403 - 1.8GHz (Sandy Bridge-EN, 10MB Level-3 cache, 80W TDP) Retail
Hewlett-Packard (HP) 693155-001 - 2.20Ghz 7.2 GT/s 15MB Cache LGA1356 Intel Xeon E5-2430 CPU Processor Sale $49.00 Retail $179.00
HP 664660-001 - Intel Celeron B710 processor - 1.50GHz (Sandy Bridge, 1MB Level-3 cache, 35W TDP) Retail