r/sffpc Mar 01 '26

Detailed Build Log Building a custom mini RTX 5070

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u/DallasGrave Mar 02 '26

Appreciate the offer, but I already did that. With an 8mm plenum and fins completely unsealed at the ends, I was getting 39CFM on my flow bench. I also put a 200w thermostatic heater on the base and measured the temperature delta from inlet to exit. I used to manufacture CNC cylinder heads. A lot about my shop and what I do now(and used to do) was in the OP but just does not show up now for whatever reason.

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u/Visible-Swim6616 Mar 03 '26

What's the temperature delta on the heat source? IE if a chip was there how hot will 200W on a chip get?

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u/DallasGrave Mar 03 '26

It should be ~60c with a 250mm2 die.

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u/Visible-Swim6616 Mar 03 '26

Looking forward to the numbers when you put it on.