Retail Processor: AMD Athlon™ 64 X2 Dual-Core Model: 4400+ Operating Mode: 32/64 Stepping: E6 Frequency: 2200Mhz HT Speed: 2000 Voltage: 1.30V1.35V Max Temp: 49-65°C L1 Cache: 128KB x2 L2 Cache: 1MB x2 CMOS Technology: 90nm SOI Socket Socket: 939 Warranty Length: Three years manufacturer warranty. Coverage: Covers repair or replacement of the product. Provider: AMD