[vrinsd]

If you look at modern FPGAs they have prodigous amounts of on-chip memories (BRAMs and URAM in Xilinx speak).

You can buy Xilinx FPGAs on PCIe cards that could easily handle THOUSANDS of RISC-V cores.

Almost all FPGA dev boards include DDR memory so you could also put code there if you needed to.

[actionfromafar]

Interesting, thanks.