Note: pulled from working machine , cpu will be final double tested before shipping.The parameters are automatically generated by the system for reference only.Specifications:Processor Series:Fits CoreModel number: Q9500Processor Speed: 2.83GHzProcessor Socket: 775stepping: SLGZ4The number of CPU cores: 4The number of threads: 4L2 cache size (MB): 6 MBWattage: 95 Wattcpu will be final double tested before shipping.The origin of CPU is from different country, like China, Malaysia, Vietnam,Costa Rica etc, but the performance is all the same. Random delivery. If you mind, please don't buy it.Tested for multitasking, computer no longer crashesTips:Please check before purchasing if your PC and parts are compatible with this processor to avoid extra shipping cost and delays.Photos and serial number are only for reference , if there is fluctuation, according to the real object please.Thanks!