SpacemiT K3 (Pico-ITX / CoM260)

Specs: 8× X100 @2.4GHz + 8× A100 AI cores, RVA23/RVV1.0 (up to 1024-bit), 60 TOPS general AI compute, 130 KDMIPS. Pico-ITX: 16/32GB LPDDR5-6400, UFS2.2 128/256GB, 10GbE SFP+ + 1GbE, 2× M.2 (M-Key Gen3 x4 / B-Key), 2× USB3.2 Type-C (full-featured 65W PD + 4K DP) + 4× USB2.0, 100×86mm. CoM260: a 260-pin compute module plus a reference carrier board, the carrier being hardware-compatible with Jetson Orin Nano.
form factor: Pico-ITX / CoM260 (also called SOM260)
Price: Sipeed launch prices: Pico-ITX 8GB $299, CoM260 kit $309; reseller prices for 32GB/128GB run $595–889 (Firefly listings; TinyComputers' review came to $1175 with tax); the domestic Milk-V Jupiter2 8GB pre-order was about ¥1799. Reseller and duty differences are large — these are media/reseller quotes.
Preinstalled / official OS: bianbu / ubuntu / debian / buildroot
Doc languages: zh / en
Checked: 2026-11-01

Officially named K3-CoM260 (a 260-pin SO-DIMM compute module), which is the SOM260 form factor in the brief; the Pico-ITX and CoM260 share the SoC/SDK and system images. K3 went on global sale on 2026-04-30 and reached volume public sales in 2026-05.

Distros

Bianbu Official Ships with Bianbu Desktop 3.0; the archive is at 4.0.8 (built 2026-10-16, LXQt/Minimal, with a UEFI variant)
Ubuntu Official The SpacemiT archive provides an ubuntu-26.04-preinstalled-desktop-riscv64 image; the spec page lists Ubuntu 26.04
Debian Official Debian 13 GNOME/XFCE/Minimal images (built 2026-07-30)
Buildroot Official The official SDK provides Buildroot configs and images
openKylin The spec page says OpenKylin is supported, but no public image download was found
deepin The spec page says deepin is supported, but no public image download was found
Fedora The spec page says Fedora is supported, but there is no K3-specific official image

Download

Bianbu K3 images (including 4.0.8)Debian 13 K3 image Ubuntu 26.04 K3 image Buildroot K3 image

Docs and videos

Pitfalls

The factory Bianbu 4.0.4 uses vendor kernel 6.18.3-generic, not mainline; K3 reference designs and SDKs have been released in batches since 2026-05, with docs and hardware validation moving together
16 cores are enumerated but a single task schedules on at most 8, and KVM/VMs did not work in testing (TinyComputers review, 2026-09)
In the review the 10GbE SFP+ never linked and only the GbE port worked; 10GbE driver/transceiver compatibility needs testing
Reseller prices vary wildly and duty is extra; the Milk-V Jupiter2 docs are still a stub, so rely on SpacemiT's official docs

RuyiSDK test reports1

Systems RuyiSDK actually tested on this board. Open a report for install steps and the verdict.

Distros	Status	Versions	Last tested	Report
Bianbu	● Good	4.0.8(LXQt)	2026-10-16	Open report

Status meanings: good — fully usable (desktop boots); basic — basic system (serial console works); part — partial functionality; cft — image exists, needs verification; cfh — documented as supported but fails to boot; cfi — claimed supported, no image; wip — announced only.

Sources12

The full source list and how each claim is judged: Sources