It's not cheap, but it's efficient. At least, that's my hope.
Over the past few months, I worked with a number of vendors to assemble what I hope will make an efficient but high-performance arm64 NAS. In the video embedded below, I've put together the following (some of these links are affiliate links):
Last year I tested two older graphics cards—a Radeon 5450 and a GeForce GT710—on a Raspberry Pi Compute Module 4.
This year, I've been testing three more graphics cards—a GeForce GTX 750 Ti, a Radeon RX 550, and the diminutive ASRock Rack M2_VGA.
The Compute Module 4, if you didn't know already, exposes the BCM2711's single PCI express lane, and the official IO Board has a nice, standard, 1x PCIe slot into which you can plug any PCI express device.