ATI Radeon 9800 256bit, missing component help. \ VOGONS

ATI Radeon 9800 256bit, missing component help.

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First post, by adamsr

adamsr Offline

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Hi everyone,

Does anyone know the markings for the 8-pin chip numbered Q8? It's often covered by a heatsink. On my board, it's torn out, and I don't know what to replace it with:

Any help would be appreciated!

Reply 1 of 3, by AncapDude

Posted on Today, 16:36

AncapDude Offline

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Joined: 2025-07-31, 11:38
Location: Hesse, Germany

I got a card with this Chip broken and if I remember correctly it was a Dual Channel MOSFET. Sold the card. Dont know more Details Sorry.

Reply 2 of 3, by tehsiggi

Posted on Today, 18:50

tehsiggi Offline

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Location: Germany

Missing part is an STS8DNF3LL or comparable. Dual N-channel fet. 30V rating. A.

https://www.st.com/resource/en/datasheet/sts8dnf3ll.pdf

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Reply 3 of 3, by adamsr

Posted on Today, 20:24

adamsr Offline

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Rank: Newbie
Posts: 2
Joined: Today, 15:43

tehsiggi wrote on Today, 18:50:

Missing part is an STS8DNF3LL or comparable. Dual N-channel fet. 30V rating. A.

https://www.st.com/resource/en/datasheet/sts8dnf3ll.pdf

Thank you very much!
Did you check this on your board? (I just want to be sure; my board is a bit simpler than the Sapphire in terms of components; it's a PalitDaytona).

@AncapDude, thank you too for trying!

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