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GMKtec NucBox M3 Ultra

GMKtecMini PC reference

GMKtec NucBox M3 Ultra

GMKtec NucBox M3 Ultra combines Intel Core i7-12700H with integrated Intel Iris Xe (dual-channel memory) for office multitasking, development and media work. Gaming and GPU-accelerated applications depend on their settings and driver support; the graphics specification alone is not a measured performance result. Replaceable SO-DIMM memory gives it a path for later RAM upgrades.

Processor
Intel Core i7-12700H
Graphics
Intel Iris Xe (dual-channel memory)
Memory
32 GB
Storage
1 TB
Configuration being compared32 GB RAM · 1 TB SSDNew
US stores · USD

Prices across stores

MiniPC.guru compares retailer listings. Purchases are completed on the retailer’s website.

View price history
RetailerAvailabilityListed priceLast checkedRetailer website
Out of stock$529.99View at GMKtec

Availability reflects the latest store check. Shipping, tax, coupons and checkout totals are not included; confirm them at the store.

Specifications

Processor, graphics and installed memory/storage describe the selected configuration. Expansion limits and connectivity describe the model; optional hardware is identified separately. References are collected in About this data below.

Processor
Intel Core i7-12700H
Graphics
Intel Iris Xe (dual-channel memory)
Memory
32 GB
Storage
1 TB
Ports & displays
USB-A: 3 × USB 3.2 Gen2 (10Gbps) + 1 × USB 2.0; USB-C: 1 × Type-C (DisplayPort / Data); HDMI: 2 × HDMI (up to 4K@60Hz); Audio: 1 × 3.5mm CTIA Audio Jack; LAN: 1 × RJ45 2.5G Ethernet
Ethernet, Wi-Fi & Bluetooth
Wi-Fi 6 (Realtek 8852BE, up to 1201 Mbps); Bluetooth 5.2; 2.5G Ethernet LAN (Intel i226) Link rates are theoretical, not measured throughput.
RAM & storage upgrades
2 × SO-DIMM Slots, 16GB / 32GB configurations, Supports up to 64GB. 1 × M.2 2280 SSD slot, supports up to 8TB; 1 × M.2 2242 SSD slot, supports SATA / PCIe x4, up to 8TB
Power supply & power limits
Power supply / DC input rating: DC Power Adapter 20V / 5A, 100W. This is a supply rating, not measured wall-power consumption.
Dimensions & weight
114 × 106 × 42.5 mm; 430 g. Dimensions follow the manufacturer order; axes are not labeled.

What owners say

Three reviewers had this i7-12700H box, and all of them heard the fan. Notebookcheck measured up to 45.6 dB(A) under load and calls the fan control immature; a Japanese reviewer's handheld meter passed 54 dB, including room noise, and found even the BIOS Quiet mode fairly loud; TechRadar heard it but was not distracted. It ships at 35 W, with a 45 W Performance and a 28 W Silent mode, and in the factory state the stress test settled near 74 °C at about 56 W from the wall, while the underside reached almost 50 °C. The Japanese reviewer logged thermal throttling under PCMark in every mode. The factory SSD varies: one unit had an uncooled TWSC drive that slowed under sustained load, another a drive under a heatsink. Both memory slots come filled, so upgrading means replacing the modules, and the second SSD slot is a 2242 that takes SATA or NVMe. There is no USB-C at the front. Wi-Fi 6 averaged 975 Mbit/s. Low DPC latency makes it a good home-theatre PC, while games run only at low settings — Tekken 8 broke up on screen at times. Fan aside, the Japanese reviewer rated its performance, serviceability and finish highly for the price.

For whom
An all-round office PC or home-theatre machine with a fast processor for the price.
Not for
Quiet rooms — even its Quiet mode is audible — and gaming.

Our own summary of 3 published sources, reviewed Sep 23, 2026. We have not tested this Mini PC ourselves; the sources are listed under About this data.

Performance

3 sourced resultsseconds

Same application version, scene, samples, resolution and CPU or GPU render backend.

Externally reported measurements. MiniPC.guru has not independently reproduced these tests.

299 secondsIndependent review

Affordable mini PC for home office and multimedia - GMKtec NucBox M3 Ultra with Intel Core i7 review

By Sebastian Bade · Notebookcheck

Source published
Oct 12, 2025
Test performed
Not reported by source
Added to MiniPC.guru
Sep 23, 2026
Source reviewed
Sep 23, 2026
Tested hardware
Intel Core i7-12700H, 14 cores / 20 threads, Alder Lake-H, 35 W PL2 short burst and 35 W PL1 sustained (delivery state) · Intel Iris Xe Graphics G7 96EUs, driver 32.0.101.7028 DCHH (not used: this row renders on the processor) · 32 GB DDR4-3200 (3,200 MT/s), max. 64 GB; module layout not printed in the review · not applicable: a CPU render does not read from disk while the measurement runs; the unit carried a TWSC TSC3AN1T0-F6Q10S of 1024 GB
Software / version / OS
Blender · 2.79 · Microsoft Windows 11 Pro
Power profile
BIOS delivery state, 35 W TDP; the BIOS also offers a 45 W performance mode and a 28 W silent mode, not used for these runs
Test conditions
BMW27 standard demo scene, CPU render backend as the chart labels it (v2.79 BMW27 CPU). Samples and output resolution are those stored in the standard scene file. Slowest in the review's comparison group (next: GMK NucBox M6 Ultra at 265 s)

Editorial review checks the source and documentation; it does not certify the measurement or mean we tested the device ourselves.

523 secondsIndependent review

Affordable mini PC for home office and multimedia - GMKtec NucBox M3 Ultra with Intel Core i7 review

By Sebastian Bade · Notebookcheck

Source published
Oct 12, 2025
Test performed
Not reported by source
Added to MiniPC.guru
Sep 23, 2026
Source reviewed
Sep 23, 2026
Tested hardware
Intel Core i7-12700H, 14 cores / 20 threads, Alder Lake-H, 35 W PL2 short burst and 35 W PL1 sustained (delivery state) · Intel Iris Xe Graphics G7 96EUs, driver 32.0.101.7028 DCHH (not used: this row renders on the processor) · 32 GB DDR4-3200 (3,200 MT/s), max. 64 GB; module layout not printed in the review · not applicable: a CPU render does not read from disk while the measurement runs; the unit carried a TWSC TSC3AN1T0-F6Q10S of 1024 GB
Software / version / OS
Blender · 3.3 · Microsoft Windows 11 Pro
Power profile
BIOS delivery state, 35 W TDP; the BIOS also offers a 45 W performance mode and a 28 W silent mode, not used for these runs
Test conditions
Classroom standard demo scene, CPU render backend as the chart labels it (v3.3 Classroom CPU). Samples and output resolution are those stored in the standard scene file

Editorial review checks the source and documentation; it does not certify the measurement or mean we tested the device ourselves.

2,632 secondsIndependent review

Affordable mini PC for home office and multimedia - GMKtec NucBox M3 Ultra with Intel Core i7 review

By Sebastian Bade · Notebookcheck

Source published
Oct 12, 2025
Test performed
Not reported by source
Added to MiniPC.guru
Sep 23, 2026
Source reviewed
Sep 23, 2026
Tested hardware
Intel Core i7-12700H, 14 cores / 20 threads, Alder Lake-H, 35 W PL2 short burst and 35 W PL1 sustained (delivery state) · Intel Iris Xe Graphics G7 96EUs, driver 32.0.101.7028 DCHH (not used: this row renders on the processor) · 32 GB DDR4-3200 (3,200 MT/s), max. 64 GB; module layout not printed in the review · not applicable: a CPU render does not read from disk while the measurement runs; the unit carried a TWSC TSC3AN1T0-F6Q10S of 1024 GB
Software / version / OS
Blender · 4.3 · Microsoft Windows 11 Pro
Power profile
BIOS delivery state, 35 W TDP; the BIOS also offers a 45 W performance mode and a 28 W silent mode, not used for these runs
Test conditions
Barbershop standard demo scene, CPU render backend as the chart labels it (v4.3 Barbershop CPU). Samples and output resolution are those stored in the standard scene file. Slowest in the review's comparison group (next: BMAX B9 Power at 2178 s). Added by the verifier: same Blender chart as the 299 s and 523 s rows, missed by the investigator

Editorial review checks the source and documentation; it does not certify the measurement or mean we tested the device ourselves.

Price history

GMKtec NucBox M3 Ultra · 32 GB RAM · 1 TB SSD

Loading checks…

New condition · US stores · USD · Selected configuration only. Prices exclude shipping and tax. Each price stays on the chart until that listing's next check, for at most 36 hours, the same window the store prices use. Out-of-stock, failed and missing checks leave gaps.

About this data5 references

Specs and any benchmark results come from the sources below. We haven't tested this Mini PC ourselves.

Sources

  1. GMKtec NucBox M3 Ultra — manufacturer specifications ↗
    • Manufacturer / specification source
    • Ports & displays · Reviewed Sep 12, 2026
    • Ethernet, Wi-Fi & Bluetooth · Reviewed Sep 12, 2026
    • RAM & storage upgrades · Reviewed Sep 12, 2026
    • Power supply & power limits · Reviewed Sep 12, 2026
    • Dimensions & weight · Reviewed Sep 12, 2026
  2. Selected configuration ↗
    • Selected configuration
  3. Affordable mini PC for home office and multimedia - GMKtec NucBox M3 Ultra with Intel Core i7 review ↗
    • External benchmark · Reviewed Sep 23, 2026
    • Owner review source · Reviewed Sep 23, 2026
  4. GMKtec M3 Ultra mini PC review ↗
    • Owner review source · Reviewed Sep 23, 2026
  5. GMKtec NucBox M3 Ultra レビュー － Core i7-12700H搭載の高性能ミニPC、ビジネス用のメインPCとして十分な性能、価格も手頃です ↗
    • Owner review source · Reviewed Sep 23, 2026

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