HP Intel Pentium III Xeon 866/256K vs Lenovo Intel Xeon E5420

Key differences

The Lenovo Intel Xeon E5420 has 1.634 GHz more processor base frequency than the HP Intel Pentium III Xeon 866/256K (2.5 GHz vs 0.866 GHz). The Lenovo Intel Xeon E5420 has 32 -bit more processor operating modes than the HP Intel Pentium III Xeon 866/256K (64-bit vs 32-bit). The Lenovo Intel Xeon E5420 has 11.744 MB more processor cache than the HP Intel Pentium III Xeon 866/256K (12 MB vs 0.256 MB). Processor family: Intel® Pentium® III on the HP Intel Pentium III Xeon 866/256K, Intel® Xeon® on the Lenovo Intel Xeon E5420. Processor socket: Socket 370 on the HP Intel Pentium III Xeon 866/256K, LGA 771 (Socket J) on the Lenovo Intel Xeon E5420.

• Processor family
  • Intel Pentium III Xeon 866/256K:Intel® Pentium® III
  • Intel Xeon E5420:Intel® Xeon®
• Processor base frequency
  • Intel Pentium III Xeon 866/256K:0.866 GHz
  • Intel Xeon E5420:2.5 GHz
• Processor socket
  • Intel Pentium III Xeon 866/256K:Socket 370
  • Intel Xeon E5420:LGA 771 (Socket J)
• Processor operating modes
  • Intel Pentium III Xeon 866/256K:32-bit
  • Intel Xeon E5420:64-bit
• Processor cache
  • Intel Pentium III Xeon 866/256K:0.256 MB
  • Intel Xeon E5420:12 MB
• Processor front side bus
  • Intel Pentium III Xeon 866/256K:133 MHz
  • Intel Xeon E5420:1333 MHz