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. New 486/586 CPU Heatsink and Fan (RiscPC PC Card etc.). CJE & 4D have, over the years, developed many of our own products for Acorn/RISC OS & Raspberry Pi computers.
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