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Author Topic: Shroudless GPU Cooling?  (Read 4473 times)
chungenhung
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September 12, 2011, 08:31:12 PM
 #21

Don't forget that modifying the GPU could blow your warranty. Warranties have been real handing as I currently have 10 GPUs out for repair / replacement.
wow, do you run a massive 100+ gpu mining operation?
Otherwise 10 GPUs out to repair is a high failure rate.
I've only got 1 card crap out on me out of like 15 cards.

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September 12, 2011, 09:04:20 PM
 #22


wow, do you run a massive 100+ gpu mining operation?
Otherwise 10 GPUs out to repair is a high failure rate.
I've only got 1 card crap out on me out of like 15 cards.

Been running things with a slightly elevated ambient temperature.  Roll Eyes See sig.
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September 12, 2011, 11:23:55 PM
 #23

how much positive pressure would you have to generate in a closed case with shrouds removed to achieve same effect?

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what is this "brake pedal" you speak of?


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September 13, 2011, 03:00:19 AM
 #24

as been mentioned, the shroud increases pressure and velocity. it also forces air against the PCB and the components on it, primarily VRMs but also memory chips and sometimes other misc chips. 

good full coverage water blocks will hit those components - not the PCB itself of course but all those other misc chips that normally get high airflow.

so just because a (say) memory chip has no heat sink on a card with a fan/shroud doesnt mean that chip doesnt need the cooling high pressure air flow provides. remove the high pressure air flow and you will need either serious velocity air flow at lower pressure, heat sinks on the components in question with lower air flow, or something else like a water block in contact with it

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September 14, 2011, 10:20:36 AM
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catfish, any news on your experiment?
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September 16, 2011, 02:55:52 PM
 #26

Part of my mining hedge is resale value of the cards. Removing the shrouds would kill this.
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September 16, 2011, 03:52:56 PM
 #27

Part of my mining hedge is resale value of the cards. Removing the shrouds would kill this.

The shrouds can usually be removed without damaging the cards or the shroud.

I have a 6950 that just runs HOT, last night I experimented with removing the shroud and the stock fans, it was literally a 4-screw affair to loose the shroud from the heatsink.

I slapped on a couple of 110CFM 120mm scythe fans and they were able to keep the card fairly cool, but didn't perform any better than the stock fans with the shroud in place.  It was ugly as sin, and I was getting about 88C either way.  I've gone back to the shroud + stock fans just because it's cleaner and less prone to failure.

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