Hardware

An NVMe drive entering a tri-mode adapter and leaving as a SCSI disk with a queue depth of 128

Tri-Mode Adapters Buy Flexibility With Your NVMe Queues

A tri-mode adapter lets any bay take SAS, SATA or NVMe — real flexibility, and the reason U.3 backplanes exist. What it does not advertise is that your NVMe drives stop being NVMe drives: they arrive in Linux as SCSI disks on mpt3sas, queue depth 128, sharing one tag pool and one x8 uplink. Two Gen4 drives saturate the card. A single Gen5 drive is already past it. Whether that trade still makes sense in 2026, and why the universal bays belong to the backplane rather than the controller.

A small aperture sliding over a large framebuffer, beside the whole framebuffer mapped at once

PCIe Resizable BAR and Modern GPUs — Intel Arc, NVIDIA and AMD

Resizable BAR lets the CPU map a GPU’s whole framebuffer instead of peering at it through a 256MB window. Intel calls it required for Arc, NVIDIA enables it per game, AMD sells it as Smart Access Memory — and for AI work it changes the transfer, not the maths.