https://www.asus.com/us/Motherboard-Accessories/HYPER-M-2-X1... vs https://highpoint-tech.com/USA_new/nvme_raid_controllers.htm . One card is about x10 expensive, but looks like performance is same. Am I missing some thing.
PCIe switch chips were affordable in the PCIe 2.0 era when multi-GPU gaming setups were popular, but Broadcom decided to price them out of the consumer market for PCIe 3 and later.