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That bridge heatsink looks like a 'standard' heatsink to me.Instead of finding the spec, I suggest taking a more direct and practical approach. That is, just measure the distance between the 2 mounting screws/holes. Then, you can look for 'standard northbridge heatsink' with matching mounting holes.Example38x38x30 https://www.aliexpress.com/item/32538630458.html
That bridge heatsink looks like a 'standard' heatsink to me.
Instead of finding the spec, I suggest taking a more direct and practical approach. That is, just measure the distance between the 2 mounting screws/holes. Then, you can look for 'standard northbridge heatsink' with matching mounting holes.
Example
38x38x30 https://www.aliexpress.com/item/32538630458.html
