The problems of the NVIDIA RTX 3000 would have their origin in the capacitors
The launch of the NVIDIA RTX 3080 was not exactly without its problems. Just seconds after their launch they were sold out due to bots that bought them in bulk. Now crashing issues have appeared, which is quite a major problem. It seems that the problems with the RTX 3000 would have to do with the capacitors, which would be defective and the origin of the problem.
When we saw the PCB for the first time we already feared problems, but not of this kind. Making a PCB so compact with all the components so close together can be a problem when it comes to cooling. Another problem is that a short could wash away a large part of the PCB and make repair impossible.
No products found.
NVIDIA RTX 3000 problems have to do with capacitors
From Igor's Labs they point out that the problem of the RTX 3000 Custom would have to do with the capacitors. Although it seems silly, a bad choice of capacitors or a bad condition of these, could be a disaster. This in turn would generate a loss in stability and significant problems at high frequencies.
The BoM and the June drawing leave open the possibility of using large surface POSCAPs (Conductive Polymer Tantalum Solid Capacitors) (marked in red), or rather the somewhat more expensive MLCCs (Multilayer Ceramic Chip Capacitor)). The latter are smaller and have to be grouped for greater capacity. Igo's Labs
The function of a capacitor is to eliminate the ripple or 'noise' of the electrical voltage. In the transformation stages of power supplies they are used to cut the wave and make it flat, thus 'generating' direct current. Well, some capacitors that do not do their job well, may let more 'noise' pass through and at high frequencies, this generates instability and crashes.
NVIDIA uses POSTCPAS and two MLCCs to create more stability. Custom models would use another configuration that would be causing quite a few problems. At the moment it is unknown which are the graphics affected by this configuration other than NVIDIA. There is even speculation that NVIDIA may have released faulty manufacturing documentation to its AIB partners. We will be watching to see if NVIDIA gives more information.
Source: ET
