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3D Vapour chamber in new NVidia RTX 5000 cards - what is it?

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Here is one of the prototypes with column wicking material missing:

5090 vap chamb GN.jpg


From this video:

 
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freeagent

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That is one bright kid, sure knows his way around numbers.
 
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It seems that no miracles happen, normal GPU temps are pretty high, RAM temps attack 90°C and they hid hotspot temps completely, because they must have been not pretty at all.

The liquid metal is there probably not to improve the temps from good to even better, but just to prevent the card to throttle too badly.

The cards most likely will throttle pretty badly in summer in non AC rooms.

I must say I am pretty disappointed.
 
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2,0 slot does a disservice to this chip, but at 2,4 slot with wider fins for more dissipating area it could get down to 35dBA 66°C like the 4090. a 5080 cooler on a 5090 what could go wrong. This is what cutting corners and saving costs looks like. Nobody would mind 2,5 slot. 3 slot is where it starts to look scary.
 
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IR-Gaming-Test.jpg

A gaming load after 30 minutes from here:


It is bad, when the cooler fins of the cooler reach this temperature. This cooler with pretty small area needs much higher air flow (fan speed, noise, even another more powerful fans).



EDIT:

I just estimated, that the total area of the cooling fins on the "heatpipes" (or vapour chamber tentacles) is around 700 000 mm2.

Inno3D publishes their cooler area, they published two models of 5090, their basic x3 model has 900 000 mm2 and their iCHILL model 1 400 000 mm2.

So I presume that the larger AIB models will have about TWICE the area of the FE card to get the air from the cooler in the air. No wonder the cooler gets so hot.

EDIT 2:

Computer base published, that the CPU under an air cooler placed above this card overheated. No wonder, if the air cooler has been sucking in the about 60°C hot air from the GPU cooler...
 
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