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GMKtec K15 AI Mini PC Oculink Intel Ultra 5 125U Processor 32GB DDR5 512GB SSD, Desktop Computer AI Boost, 3X M.2 2280 Storage Expansion, Dual NIC 2.5GbE, HDMI 2.1, USB4
GMKtec

GMKtec K15 AI Mini PC Oculink Intel Ultra 5 125U Processor 32GB DDR5 512GB SSD

Bottom line: The GMKtec K15 AI Mini PC Oculink Intel Ultra 5 125U Processor 32GB DDR5: 32GB DDR5-5600 in dual 16GB SO-DIMMs out of the box; main trade-off: 15 W U-series chip trades sustained power for efficiency.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

Pros & Cons

Pros

  • ✓ 32GB DDR5-5600 in dual 16GB SO-DIMMs out of the box
  • ✓ Three M.2 2280 slots, up to 8TB each for 24TB total
  • ✓ Dual 2.5GbE NICs suit firewall, router, and NAS roles
  • ✓ OCuLink port at PCIe x4 for external GPU setups
  • ✓ Quad-display output incl. HDMI 2.1 8K@60Hz and DP 1.4

Cons

  • ✗ 15 W U-series chip trades sustained power for efficiency
  • ✗ 512GB boot SSD fills quickly without an added drive
  • ✗ Only a 1-year limited warranty from GMKtec
  • ✗ OCuLink eGPU use requires a separate dock and graphics card

Manufacturer description

The GMKtec K15 is a compact desktop built around the Intel Core Ultra 5 125U, a Meteor Lake processor with 14 threads, 12 MB of L3 cache, and boost clocks up to 4.3 GHz. It is rated at a 15 W TDP, so it uses little power and suits an always-on home lab node, office desk, or media station. You get 32GB of DDR5-5600 memory (two 16GB SO-DIMMs) and a 512GB PCIe 4.0 SSD. Storage grows with three M.2 2280 slots, each taking up to 8TB, for a stated 24TB maximum. Dual 2.5GbE ports make the K15 a good fit for firewall, soft-router, link-aggregation, or file-server duty. Wi-Fi 6E and Bluetooth 5.2…

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SpecPicks Verdict

SpecPicks scored GMKtec K15 AI Mini PC Oculink Intel Ultra 5 125U Processor 32GB DDR5… using a rating × review-volume × price-fit model applied to published specs and reviews across the home ai / computer lab category. GMKtec's home ai / computer lab lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for home ai / computer lab of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Can I add more storage to the GMKtec K15?

Yes. It ships with a 512GB PCIe 4.0 SSD and has three M.2 2280 slots, each rated for up to 8TB, for a stated maximum of 24TB.

Is the K15 good for a home lab firewall or router?

It has two 2.5GbE Ethernet ports, which GMKtec lists for firewall, multichannel aggregation, soft routing, and file-server use. The 15 W TDP CPU also keeps power draw low for always-on duty.

How many monitors can the GMKtec K15 drive?

Up to four. Outputs include HDMI 2.1 (up to 8K@60Hz), DisplayPort 1.4 (4K@60Hz), and USB Type-C with DP1.4 support.

Can I connect an external graphics card?

Yes. The rear OCuLink port runs at PCIe x4 for eGPU setups. You need a compatible OCuLink dock and a GPU, sold separately.

What warranty does the K15 come with?

GMKtec offers a 1-year limited warranty from the purchase date that covers design and workmanship defects. Check the product listing for current terms.

Key Features

  • LOW ENERGY HIGH PERFORMANCE MINI PC - The Intel Core Ultra 5 125U is part of the Ultra 5 lineup, using the Meteor Lake architecture with BGA 2049. Intel Hyper-Threading technology is available and effectly doubles the core-count of the P-Cores, to a total of 14 threads. Core Ultra 5 125U has 12 MB of L3 cache and operates at 1300 MHz by default, but can boost up to 4.3 GHz, depending on the workload. With a TDP of 15 W, the Core Ultra 5 125U consumes very little energy but outputs high performance efficiency
  • 32GB DDR5 RAM + 512GB SSD - The K15 mini computer is equipped with Dual 16GB (Total 32GB) SO-DIMM DDR5 5600MHz memory sticks. 512GB PCIE 4.0 SSD Drive with 3x M.2 2280 Expansion slots. Each slot capable of reading up to 8TB. (24TB MAX)
  • QUAD SCREEN 4K DISPLAY SUPPORT - K15 Mini PC support 4-screen 4K/8K output via HDMI 2.1 (8K@60Hz), DisplayPort 1.4 (4K@60Hz), and USB Type-C Transfer speed (supporting PD3.0/DP1.4/DATA). Ideal for gaming, video editing, and multitasking, it provides expansive and crisp multi-display support
  • OCULINK PORT - The Oculink port on the rear interface enables higher bandwidth capabilities, better frame rates and lower lag. The standard also operates at PCIe x4 speeds, compared to Thunderbolt's x3. Gamers and content creators can benefit from Oculink's higher bandwidth, resulting in better performance and lower lag for eGPU setups
  • DUAL NIC FAST 2.5GBE + WIFI 6E + BT 5.2 - Dual Ethernet 2.5GbE LAN port design provides more applications, such as firewall, multichannel aggregation, soft routing, file storage server. Built-in WIFI 6E / Bluetooth 5.2 is more stable and efficient to connect multiple wireless devices such as projector, printer, monitor, speakers and etc
  • DUAL COOLING FANS WITH LIGHTING - Turbo CPU fan + a massive DDR5/SSD cooling fan deliver silent, ultra-efficient cooling (just 35dB in Quiet Mode!), while the advanced heatpipes and 360° airflow keeps your Ryzen Mini PC frosty under heavy loads. Plus, 13 dazzling RGB lighting modes let you personalize your rig’s vibe

Full Specifications

BrandGMKtec
ColorBlack
TurboYes
RAM TypeDDR5 RAM
CPU ModelIntel Core Ultra 5
CPU Speed4.3 GHz
Cache Size32 GB
Model NameK15
Model Year2025
Resolution8K
Unit Count1.0 Count
Screen Size75 Inches
Aspect Ratio16:9
ConnectivityBluetooth, USB, WiFi
Display TypeLED
Memory Speed5600 MT/s
Model NumberK15
Video OutputUSB-C
CompatibilityPC
Built-In Media1 x GMKtec Nucbox K15 Intel Core Ultra 5 125U Mini PC, 1 x HDMI Cable, 1 x Power Adapter, 1 x User Manual, 1 x VESA Mount with Screws
Full listing titleGMKtec K15 AI Mini PC Oculink Intel Ultra 5 125U Processor 32GB DDR5 512GB SSD, Desktop Computer AI Boost, 3X M.2 2280 Storage Expansion, Dual NIC 2.5GbE, HDMI 2.1, USB4

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GMKtec K15 AI Mini PC Oculink Intel Ultra 5 125U Processor 32GB DDR5 512GB SSD, Desktop Computer AI Boost, 3X M.2 2280 Storage Expansion, Dual NIC 2.5GbE, HDMI 2.1, USB4 is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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GMKtec K15 AI Mini PC Oculink Intel Ultra 5 125U Processor 32GB DDR5 512GB SSD, Desktop Computer AI Boost, 3X M.2 2280 Storage Expansion, Dual NIC 2.5GbE, HDMI 2.1, USB4
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