The Homelab Bench
Real Raspberry Pi & self-hosting builds, actually tested.

2026-07-09

Best NVMe SSD for Raspberry Pi 5 (Real-World Tested)

The Raspberry Pi 5's single PCIe 2.0 lane caps NVMe throughput well below what modern drives can deliver, so buying the fastest drive on the market is a waste of money. A budget DRAM-less NVMe like the Fanxiang S501Q hits the Pi 5's ceiling and costs a fraction of flagship SSDs — that's what I run, and below are my actual numbers.

My Exact Build

Real Benchmark Results

All tests run with fio on the live system described above.

Metric Result
Sequential read 453 MB/s
Sequential write 438 MB/s
Random 4K read IOPS 16,433
SoC temp at idle 49.4 °C
SoC temp after sustained load 48.8 °C

A few things jump out. Sequential read and write are nearly symmetrical, both clustered around 440–450 MB/s. That aligns almost exactly with the theoretical ceiling of a single PCIe 2.0 lane (roughly 500 MB/s signaling rate, minus protocol overhead). The drive is not the bottleneck — the bus is.

The temperature result surprised me. After a sustained fio workload the SoC actually read 48.8 °C — slightly lower than the 49.4 °C idle reading taken earlier. That's within normal measurement variance and tells you one useful thing: the S501Q generates negligible additional heat. I run the Pi 5 with the official active cooler, but even so, a drive that doesn't meaningfully raise SoC temps is welcome in a cramped homelab case.

Why a Budget NVMe Makes Sense on the Pi 5

The Pi 5 exposes one PCIe 2.0 x1 lane. You can force Gen 3 in config.txt, which reportedly bumps the ceiling to ~800 MB/s, but Raspberry Pi's own documentation notes this is not guaranteed stable on all boards. At Gen 2 defaults, any modern NVMe — even a $25 DRAM-less drive — will saturate the link.

Spending $100+ on a Samsung 990 Pro or WD Black SN850X gains you nothing on this platform. Those drives are designed for PCIe 4.0 x4, delivering 7,000 MB/s to a desktop. Plugged into a Pi 5, they'll still hit the same ~450 MB/s wall I measured. Save the money.

What does matter on the Pi 5:

Other Drives Worth Considering (Not Tested by Me)

I can only vouch for the Fanxiang S501Q from first-hand benchmarking. But based on published specs and widely shared community results, these are commonly recommended for the Pi 5:

I want to be clear: I have not benchmarked any of those drives on a Pi 5. The numbers I trust are the ones at the top of this article.

How to Boot from NVMe

The process has gotten simpler since the Pi 5 launched. In brief:

  1. Update the bootloader via rpi-eeprom-update to a version that supports NVMe boot.
  2. Flash your OS image directly onto the NVMe drive (I used the Raspberry Pi Imager).
  3. In raspi-config or the EEPROM config, set the boot order so NVMe comes before SD.
  4. Remove the SD card and power on.

My system boots from /dev/nvme0n1p2 with no SD card present. It's been running stable for weeks under mixed workloads — containers, cron jobs, package builds.

Who Should NOT Do This

The Honest Trade-Off

NVMe on the Pi 5 doesn't give you desktop-class storage speed. It gives you roughly 4× the sequential throughput and dramatically better random I/O compared to even the best SD cards, with far superior write endurance. For a homelab box that runs 24/7 — Docker, databases, logging — those gains translate directly into snappier response and longer drive life. That's the real reason to do it.

Verdict

The Fanxiang S501Q 512GB NVMe SSD paired with the Raspberry Pi M.2 HAT+ saturates the Pi 5's PCIe 2.0 link at 453/438 MB/s read/write and 16K random read IOPS, all while adding effectively zero heat. Any budget DRAM-less NVMe will hit the same ceiling — don't overspend on a flagship drive for this platform. Put the savings toward more RAM or a better case with active cooling.

← all articles

Some links are affiliate links — if you buy through them I may earn a small commission at no extra cost to you. Benchmarks are run on my own hardware.