[someguy2026]

DRAM speeds is one thing, but you should also account for the data rate of the PCIe bus (and/or VRAM speed). But yes, holding it "lukewarm" in DRAM rather than on NVMe storage is obviously faster.

[tgrowazay]

Yes.

In general systems usually have PCIE version with bandwidth better than RAM of that system.

For example a system with DDR4 (27Gbs) usually has at least PCIE4 (32Gbs at 16x).

But you can bottleneck that by building a DDR5 (40Gbs) system with PCIE4 card.