Minisforum MS-03: Triple 10GbE, 13 Watts of Idle, and the MS-01 Successor That Actually Arrives

The box//

Two years after the MS-01 became the default "serious mini PC" answer for home labs, Minisforum shipped the MS-03 — and the reason it matters isn't the CPU. It's the power meter: a fresh written review measured 13.3 W at idle and 75.9 W under 100% CPU load, versus the MS-01's ~45 W normal load and ~120 W full load. That's roughly half the power for a CPU that benchmarks about 24% faster than the MS-01's i9-13900H. For a box that runs 24/7/365, that's the whole pitch.

The specifics//

• Price: $999 barebone — no RAM, no NVMe — at Minisforum (marked down from $1,249), orderable as of the August 2026 reviews with an estimated ship window of late August.
• CPU: Intel Core Ultra 9 386H (Core Ultra Series 3, formerly Panther Lake) — 16 cores / 16 threads (4 performance + 8 efficiency + 4 low-power efficiency), up to 4.9 GHz, 25 W base / 80 W max turbo, and a 50-TOPS NPU. The thread count is a notable change: this generation drops the old "performance cores with Hyper-Threading" combo for straight physical cores.
• Memory: up to 128 GB DDR5 (2x SO-DIMM). Yes, more than most of us can afford.
• Networking — the strong suit: 2x Intel X710 10GbE SFP+ (the same proven controller the MS-01 used, no Linux drama in the review), 1x Realtek RTL8127 10GbE RJ45, and a dedicated Intel i226-LM 2.5GbE management port. That's three 10GbE interfaces plus a dedicated management LAN; the MS-03 gained a full 10GbE interface over the MS-01.
• Storage: 2x PCIe 5.0 x4 M.2 NVMe + 1x PCIe 4.0 x1 M.2 + U.2 via the included M.2-to-U.2 adapter — same enterprise-NVMe door the MS-01 had (the reviewer runs Ceph on U.2 drives in their MS-01 cluster).
• Expansion: a half-height PCIe slot — physically x16, electrically PCIe 4.0 x4, half-height single-slot cards up to 170 mm long / 20 mm thick.
• Everything else: 2x USB4 40Gbps, Wi-Fi 7 (Intel BE211), Bluetooth 6, HDMI 2.1 4K120, 240 W PSU, 196 x 189 x 48 mm.
• Management: Intel vPro (active) — this is the sleeper feature. The 386H is a vPro processor, which is the iDRAC/iLO equivalent for a mini PC: out-of-band management over that dedicated i226-LM management port, which for a remote lab is genuinely worth its weight. The reviewer started off not liking mini PCs without IPMI; now they run vPro on all five of their Proxmox nodes and call it "awesome."

How it actually works (the part you're here for)//

The architecture choice that explains the power number is Panther Lake. The 386H is rated at a 25 W base with an 80 W turbo ceiling, and Minisforum ships the MS-03 at 70 W PL1 / 80 W PL2 in Balance mode (Quiet mode lowers it further). The review's idle figure — 13.3 W — was taken without VMs running, with the SFP+ unplugged and only the 2.5GbE port connected, so it's the cleanest number the box can put up, but it's still the number: a virtualization host idling at 13 W is a NAS-tier cost for a full Proxmox node.

The practical topology the reviewer sketches is what most MS-01 users will want to replicate: dedicate the i226-LM 2.5GbE to Proxmox management (which is exactly what vPro is talking to), point one X710 SFP+ at VM traffic, the second X710 at storage/migration traffic, and use the Realtek 10GbE base-T for backups, NAS traffic, or a completely separate network. Alternatively, bond the two X710s and run VLANs across the bond — the same setup the reviewer runs on their MS-01 cluster. Proxmox VE 9.2 saw all four network adapters on a fresh install, and the X710 is the identical controller from the MS-01, so the 10G SFP story is well-tested ground.

On storage, the layout is MS-01-shaped with one trap: the third NVMe slot is PCIe 4.0 x1 — fine for ISOs, container templates, logs, or a slow backup drive, not fine if you were planning an identical-performance three-drive ZFS mirror. The U.2 adapter in the box is the escape hatch for real enterprise storage (Ceph on U.2 NVMe, as the reviewer does), and the 4.0 x4 PCIe slot keeps the door open for an HBA, storage controller, or accelerator card — even if it's half the electrical bandwidth the MS-01 offered.

One honest observation from the bench: the fans ramp up and down noticeably more on the MS-03 than the MS-01. At idle it's inaudible; under the 100% load test the fans are "pretty noticeable." If this box is going on a desk next to you, that's a factor.

The honest take//

It's a good box with three real caveats, and none of them are hidden:

1. The third 10GbE is Realtek, not Intel. The reviewer "usually prefers Intel networking for virtualization hosts" and is watching for Linux flakiness on the RTL8127. It was recognized fine under Proxmox — but it's the new part in an otherwise battle-tested network stack, and 10G base-T draws more power than SFP+ and needs a copper switch or DAC in the path.
2. The expansion slot got cut. The MS-01 had 4.0 x8 electrical; the MS-03 has 4.0 x4. If your upgrade path was "bolt a fat HBA or GPU into the slot," budget for the bandwidth change. (It's also still half-height, single-slot — this is a mini PC, not a tower.)
3. $999 is the barebone price. Add DDR5 and NVMe and the real entry cost is north of $1,200. It's not a budget lab machine; it's a "replace two boxes" machine.

And the things it doesn't replace: it's not open hardware (no published schematics-and-BOM story), the 128 GB ceiling won't satisfy a big-data workhorse, and the NPU's "runs 35B models locally" claim is Minisforum marketing — the reviewer is squarely in the "NPUs won't replace a dedicated GPU" camp and sees the NPU as a fun toyness, not a local-LLM replacement. Who shouldn't buy it: anyone whose plan is to slot a high-bandwidth PCIe card into it, anyone who wants sub-$600 entry into the ecosystem (the MS-01 is still the cheaper ticket), and anyone who needs the open hardware story. Who should buy it: the MS-01 owner tired of the ~45 W idle, and the new lab owner who wants a single node that does virtualization, 10G networking, and storage without a second box.

If you've been waiting on the "when does the MS-01 get its sequel" question since early 2024 — it's orderable, it's measured, and it drinks half the power.