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 2020-08-03, 17:13 #23 kruoli     "Oliver" Sep 2017 Porta Westfalica, DE 7·47 Posts Here are my results of the disassebly: Only two screws to loosen, but the remaining parts cannot be "blown on". The wind tunnel is closed. In order to open it, I'd have to bend the fins and I'm not comfortable doing this. Attached Thumbnails
 2020-08-03, 18:19 #24 masser     Jul 2003 wear a mask 2·7·103 Posts How large is the area on top? Could you secure a large (200 mm) fan on top that would draw air through the gaps in that heatsink?
 2020-08-03, 18:45 #25 kruoli     "Oliver" Sep 2017 Porta Westfalica, DE 14916 Posts 92 $$\cdot$$ 246 mm (total area). 76 $$\cdot$$ 220 mm (only the fins). My only 200 mm fan is quite slow and would overlap my Phi by a bunch. Maybe two or three 80 mm? But I doubt that any fan could suck enough air through those very tightly fitted fin tops.
 2020-08-03, 21:02 #26 ewmayer ∂2ω=0     Sep 2002 República de California 9,791 Posts Thanks for the pics, now I finally have a good sense what we're dealing with, colling-options-wise. As a short-term nondestructive half-measure, setting it crosswise in the airstream from a corded desktop fan like I use to help cool my 3-Radeon-VII desktop cruncher couldn't hurt, just see how rapidly temps spike under load and how bad the resulting throttling is. But what this beast really needs is a larger version of the kinds of centrifugal-ducted fan in a U-shaped enclosure one finds in laptop and other compact compute devices. Something like this, just of the closest size you can find to match the dimensions of the rectangular opening of the finned end of your card, to minimize or eliminate the need for any custom adapter-ducting segment.
 2020-08-04, 00:03 #27 kriesel     "TF79LL86GIMPS96gpu17" Mar 2017 US midwest 11FA16 Posts 7120A uncovered Fan housing is cast metal in this unit. Attached Thumbnails

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