Fits CPUs 44mm x 44mm. Fan will also clip onto 486 and 586 (5x86) CPUs including 486 SXL33, 486 DX2/66, DX4/100, 5x86 100MHz & 5x86 133Mhz. Also including Socket-3 CPUs: 486 OverDrive and Pentium OverDrive processors as well as AMD Am486, Am5x86 and Cyrix Cx5x86 processors.
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