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

[Zazigalka]

Close up video at CES talking about the PCB

also clocks if they weren't already mentioned.

Nvidia GeForce RTX 5090 release date, price, and specs https://search.app/gu9qCaDroSXaawZY8

View attachment 379187

Gotta say, the design is sleek. I think I'm gonna wait until I can get my hands on the FE model of 5070Ti/5080.

 

[Godrilla]

Derbauer take on the 5090 reference design. FYI

 

[BoggledBeagle]

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

From this video:

 

[freeagent]

That is one bright kid, sure knows his way around numbers.

 

[BoggledBeagle]

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.

 

[N/A]

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.

 

[BoggledBeagle]

A gaming load after 30 minutes from here:

NVIDIA GeForce RTX 5090 Founders Edition im Test - Das 600 Watt-Kraftpaket im Gaming- und Labortest | Seite 15 | igor´sLAB

Dieser heutige Artikel bietet einen umfassenden Review zur GeForce RTX 5090 und der zugrunde liegenden NVIDIA Blackwell-Architektur. Die Gliederung erfolgt, da es eine komplett neue Architektur ist…

www.igorslab.de

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 heat 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...

 

[BoggledBeagle]

BTW 65°C causes burns and cooks meat. I wonder if the cards are equipped with the hot object warning pictograms.



I just measured temperature of 220W GPU cooler (also close to the chip, close to the heatpipe), and it was 32°C. Edges of the fins felt pretty cool when I touched them.

 

[Chrispy_]

Huang mentioned a 3D vapour chamber for their FE edition of RTX 5000 cards in the keynote yesterday, is there any info anywhere how does the chamber look like and how it works?

Ignore what Huang says, it's often nonsense. This is a regular vapor chamber in every way. All vapor chambers are 3D because they have to be 3D as they must contain an airtight, low-pressure void inside them. A flat, 2D vapor chamber can't possible be a "chamber" with an internal volume of zero. Nvidia's innovation here is that they've soldered heatpipes onto the vapor chamber, which is just another, cheaper, more practical way of making the vapor chamber into the shape they want for contacting the fin stacks.

Vapor chambers and heatpipes are the exact same technology - heatpipes are simply tubular vapor chambers and if you look outside the dGPU industry, the first page of an image search proves that vapor chambers can be any shape and size needed, they're not limited to the rectangular blocks we usually see for graphics cards.