Where are the Computer Ferraris and Lamborghinis?

[Iggy]

How is a computer with a few gpu boards a "supercomputer"?
Did you take note of the relatively low PCIE bandwidth figures being quoted?

A Power9 system with two or more CPUs and Gen4 PCIE would definitely have the potential to outperform the systems mentioned.

Especially if accelerators using CAPI were added.

And, back to outrageous speculation, PPC NG could be ported to Power9, enhanced with memory protection, SMP, and 64 bit addressing, and actually be competitive.

But that isn't going to happen because we don't have the deep pockets needed to finance such development.

So, we're relegated to posting nonsense about Apple systems being worthy, or how Linux and Windows systems can be converted to "supercomputers" with the addition of a few overpriced Nvidia gpu boards.

Maybe it is time to switch to Linux.
Amiga enthusiasts have no vision anymore.

[Iggy]

Actually Tesla is and has been based on standard Nvidia GPU technology.
Further, Nvidia was consulted during the design of CAPI and there is nothing preventing Tesla from being implemented via that interconnect, at many times the bandwidth you are quoting.
Nvidia, with its NVLink technology, and IBM with CAPI are creating coherent interconnects with 2.5 to 10 times the bandwidth that Intel hardware can provide.

As to applicability, I'm not sure that either idea has much utility for a desktop user.
But it is much faster than merely plugging Tesla boards into PCI-e slots on an X64 system.

This entire thread, and the idea of desktop "supercomputers" borders on ludicrous as there aren't any real applications for this technology.

But, if and when somebody uncovers these applications, the hardware I've mentioned will be able to run circles around the X64 hardware you've mentioned.

And its on hardware that is much closer to our current platforms than PCs.

That seems to frustrate you, but these are just a statistically provable facts.