2008年10月28日星期二

CPU shim


A CPU shim (also called CPU spacer) is a shim used between the CPU and the heat sink in a computer. Shims make it easier and less risky to mount a heatsink on the processor because it stabilizes the heatsink, preventing accidental damaging of the fragile CPU packaging. They help distribute weight evenly over the surface.
CPU shims are usually made of thin and very flat aluminium or copper. Copper has good heat dissipation capacity but is electrically conductive. CPU shims should be non-conductive to prevent any accidental short circuiting. Aluminium shims are often anodized, which makes them non-conductive and improves their appearance (see case modding). It is also very important that the shim is the proper thickness. If it is too thick then the heatsink will not make contact with the CPU, resulting in poor cooling and possibly overheating.
Most shims are CNC manufactured, often using laser cutting. Cheaper ones may be pressed or stamped which could make them less accurate.
They can usually be bought for less than USD$10.
Usage
CPU shims are not common at all in OEM computers, but are used by some computer hardware enthusiasts who may use heavier heatsinks because they wish to have a cooler or less noisy system or perhaps to overclock the CPU for better performance. A heavy heatsink puts more pressure on the CPU and motherboard. Shims are very useful for people who often change CPU, heatsink and/or cooling solutions, or use a heatsink that is heavier than the CPU manufacturer's recommended weight.
CPU shims are nowadays largely obsolete because most modern processors designed for home users since the introduction of the Athlon 64 and Pentium 4 have Integrated Heat Spreaders (IHS) which prevents the CPU core from getting accidentally broken.

NOTE:


drive dvd ram


computer external memory


computer cpu processor


floppy drive scsi


flex atx motherboard


digital effects processor


ddr 266 ram


dell latitude motherboard


ddr 1gb memory


ide sata scsi


cooler master heatsink


flash stick memory


evga e geforce


cheap ram memory


ddr2 1g memory


ddr 266 memory


ide flash memory


cisco flash memory


compaq presario memory


ddr 266mhz memory


fastest intel processor


dance platform ddr


dell dimension ram


computer laptop memory


driver flash memory


dvd recorder harddrive


imac g5 intel


ddr2 dimm memory


food and processor


dvd burner scsi

没有评论: