A 9800SE is a cut-down version of the ATi 9800 Pro display vard, with processing pipelines disabled.
The Arctic Cooler version 2 will fit some 9800SE's but possibly not others. Version 3 will not fit any apparently. Version 1 will fit but needs modifications made to the silencer.
My advice would be to purchase a different heatsink and fan to ensure you get one that will fit.
This particular Arctic Cooler model is the most likely of the range to fit:
Other good choices would be this Zalman:
or this Vantec:
We're a friendly, industry-focused community of 1.18 million developers, IT pros, digital marketers, and technology enthusiasts learning and sharing knowledge.