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AMD Radeon Instinct MI8 Blower Fan Casing (CF1275-B30H-C002) — image 1
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AMD Radeon Instinct MI8 Blower Fan Casing (CF1275-B30H-C002)

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A very effective CF1275-B30H-C002 blower fan case for the AMD Radeon Instinct MI8

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Model information

Category
Computers
License
Creative Commons — Attribution — Noncommercial

This model was based on the “fan base for Amd Radeon Instinct MI8 (rage fury X) GPU” by @Hrumque. I made 5 iterations of improvements, and this is my final version.

It has been customized to exactly fit a “CF1275-B30H-C002” fan found on old HD4850, HD4870 and many other AMD graphics cards. Most of these HD48XX cards are defective anyway, as they all suffered from the poor lead-free solder of the time.
The good thing is that the connector fits the card and the cable is already the perfect length.
You only have to drill four holes to mount it.

By placing the fan asymmetrically and adding walls, I was able to drastically increase the effective air pressure.

During a 30 minute test in Furmark, my card settled at only 36% fan speed, and at a low noise level. The previous version with the centered fan throttled hard at 100% fan speed in this test.

Btw: Only change the thermal paste on these cards if necessary! The contact pressure of the cooler is extremely high. It is scary! You should wear safety goggles in case a screw fails...