Sell I7 640M 620M I5 560M 580M 2.8-3.46G Notebook CPU Genuine Generation HM55 best price

Package 2: I5 580M 2.66 Core Frequency 3.33G 3M Cache Original official version of PGA Package 3: I7 620M 2.66 Turbo 3.4G 4M Cache Original official version PGA Must read before installing the CPU: -Remove the original CPU, clean the dust on the fan and heat sink, and clean the original silicone grease remaining on the heat sink. Especially the hardened silicone grease must be thoroughly cleaned. This is very important! -Insert the newly purchased CPU in the correct direction and apply a layer of silicone grease on top of the CPU. Do not apply too much, just enough to fill the gap between the top of the CPU and the heat sink. (Taking a small amount of silicone grease in a needle tube as an example, it is suitable to squeeze 2-3 small cells of silicone grease) 3, replace the heat sink, first use your fingers to press the heat sink up and down and left and right to move a few times, let the silicone grease inside evenly spread and discharge the air, and then follow the numerical order marked on the fixing screws on the heat sink (or diagonally) Tighten one by one, rotate a few turns each time and then unscrew a screw. Do not turn one screw at a time, and rotate it one by one until it is fixed. Note: After changing the CPU, if the CPU temperature is too high, or the temperature is high and low, please carefully check the above 3 items and check if the quality of the silicone grease is too bad. Most of the problems can be solved like this.