to be fair, your money isn't as good as VC money for RAM at the moment
Are Nvidia using ecc ram? If not this should mean it is less supply constrained than regular ram.
I'm open to being wrong, but so far as I understand it ECC mostly lives at the controller level and shares the same DRAM chips across all forms of server memory (including non-ecc), which is why we see price increases across all sectors including consumer.
Those DRAM chips being the bottleneck that would require hard to build new silicon fabs to increase supply.
Do mobile CPU's and northbridges support ECC?
Handheld mobile no. Laptops could, but rarely/never do due to policy not technical requirements.
Confused, doesn't all DDR5 support inline ECC by default? Or are you talking about the ability to enable it in the BIOS/OS?
A few years ago we were told only "Pro" parts have ECC: https://news.ycombinator.com/item?id=37828168