ASUS NUC 15 Pro (Core Ultra 7 255H Barebone Mini PC)

ASUS NUC 15 Pro (Core Ultra 7 255H Barebone Mini PC)

By ASUS · Desktop Computers · Phones & Computers

  • Intel Core Ultra 7 255H processor (16 cores) with Intel Arc graphics
  • Supports up to 96GB dual-channel DDR5-6400 memory (2x SODIMM)
  • Storage: 1x M.2 22x80 PCIe Gen5 NVMe + 1x M.2 22x42 PCIe Gen4 NVMe with tool-less mounting

Lowest price seen
~$645.25 (approx.)
from $645.25 at Amazon

Prices are snapshots. Check the current price with the store.

Summary

A 0.48L barebone mini PC built around a 16-core Intel Core Ultra 7 255H, with dual Thunderbolt 4, Wi-Fi 7 and a tool-less chassis that takes your own RAM, storage and OS. Check the memory rules first: 96GB needs CSO-DIMM modules, and standard SO-DIMMs top out at 48GB.

Strengths

  • The 0.48L chassis can VESA-mount behind a monitor.
  • A tool-less bottom cover makes RAM and storage upgrades screwdriver-free.
  • The 16-core Core Ultra 7 255H handles productivity, multitasking and content creation well.
  • Connectivity runs to two Thunderbolt 4 ports, two HDMI 2.1 outputs, Wi-Fi 7 and 2.5GbE.
  • Power draw under full load is 90W, down from 146W on the previous generation.
  • The three-year warranty is longer than the usual one-year mini PC cover.

Weaknesses

  • Fan noise under load is the most consistent complaint; Digital Citizen measured about 45dB.
  • Memory compatibility is fussy: owners report boot failures with 128GB kits and some 5600MHz modules.
  • USB-C and Thunderbolt port failures are reported on newer ASUS NUC models.
  • There is no 3.5mm audio jack, so audio has to go through HDMI, USB or Bluetooth.
  • CPU temperature reaches 105°C under load, close to Intel’s 110°C limit.
  • Barebone pricing sits above cheaper mini PCs that already include memory and storage.

Verified specifications

ModelNUC15CRH tall kit and NUC15CRK slim kit, project code NUC15CRH.
CPUIntel Core Ultra 7 255H, 16 cores (6 performance, 8 efficient, 2 low-power efficient), 16 threads, up to 5.1 GHz turbo, 24MB cache, 40W cTDP.
Graphicsintegrated Intel Arc 140T (Xe architecture).
NPUIntel AI Boost, up to 13 TOPS; it does not meet the 40 TOPS Copilot+ PC bar.
Memorytwo SODIMM slots, up to 96GB DDR5-6400 CSO-DIMM or 48GB DDR5-5600 SO-DIMM.
Storageone M.2 2280 PCIe Gen5 x4 NVMe and one M.2 2242 PCIe Gen4 x4 NVMe.
WirelessIntel Wi-Fi 7 (BE201 or BE202) and Bluetooth 5.4.
LANIntel Ethernet Controller I226-V, 2.5GbE.
Front I/Oone USB 3.2 Gen2x2 Type-C, two USB 3.2 Gen2 Type-A and a Kensington lock.
Rear I/Otwo Thunderbolt 4 (DisplayPort 2.1, USB4), two HDMI 2.1 at 4K@60Hz, one USB 3.2 Gen2 Type-A, one USB 2.0 Type-A, RJ45 LAN and DC-in.
Power19V DC, 6.32A, 120W external adapter.
OS supportWindows 11, RedHat Enterprise Linux and Ubuntu.
DurabilityMIL-STD-810H certified.
Displaysup to four 4K screens through dual HDMI 2.1 and dual Thunderbolt 4.
Dimensionstall kit 117 × 112 × 54 mm (4.6 × 4.4 × 2.13 in), about 600g (1.32 lb); slim kit 117 × 112 × 37 mm (4.6 × 4.4 × 1.46 in), about 500g (1.1 lb).
Warrantythree years from ASUS.
In the boxthe barebone unit, a 120W AC adapter, power cord, VESA bracket and screws, cable clip, safety insert and warranty card. No RAM, storage or OS.
Full research notes and sources

Fan noise and cooling

Digital Citizen measured about 45dB under load and a peak CPU temperature of 105°C, against Intel’s 110°C limit. PCMag, testing the NUC 15 Pro+, said the fan ran through every benchmark and was surprisingly loud. Owners in r/MiniPCs describe background fan noise during light work and the fan spinning up for small tasks. Tech-Critter, by contrast, found the cooling quiet across a 30-minute stress test. How loud it gets depends on your workload and which chassis you pick.

Memory, storage and upgrades

The barebone arrives with no RAM, storage or OS. The 96GB ceiling needs CSO-DIMM modules; with standard SO-DIMMs the board tops out at 48GB, which many buyers miss. ASUS does not support XMP or EXPO, so memory runs at JEDEC speeds. Reddit owners report boot failures, with the “3 blinks - minor pause - 3 blinks” error, on 128GB configurations and some 5600MHz modules, especially on the slim kit. The bottom cover opens on a hinged lever, and the tall kit adds internal headers for a second M.2 2280 SSD, a second 2.5GbE LAN port or an RS232 serial port; the slim kit does not.

Repairs, parts and running costs

The barebone is the cheap part. You still need DDR5 memory, an NVMe SSD, a Windows licence if you are not on Linux, and peripherals, which adds roughly $150-300 to the kit price. US listings in October 2026 put the tall U7-255H kit at $644.99 at CDW, $662.99 at Newegg and $624.69 at Compsource, and a UK store listed the Core Ultra 5 225H kit at £449.99. PCMag’s configurations ran $615 for a Core Ultra 5 255H barebone and $755 for a Core Ultra 7 255H barebone, up to $1,199 for a Core Ultra 9 285H with 32GB and 1TB. ASUS covers the NUC 15 Pro with a three-year warranty, sells replacement parts through its Parts Shop and claims a 0.4% global failure rate for NUC products.

Is it worth it?

At $625-665 the barebone is fair value for a 16-core Core Ultra 7 255H with Thunderbolt 4, Wi-Fi 7 and PCIe Gen5, even though competitors at that price often bundle memory and storage. Between $665 and $800 it only makes sense if you need the tall kit’s expansion headers or the ASUS NUC ecosystem. Above $800 a fully configured mini PC with comparable performance is usually the better buy. The three-year warranty and tool-less upgrades are what you are paying for.

Which model this is

This page covers the ASUS NUC 15 Pro with the Core Ultra 7 255H in barebone form: the tall kit is NUC15CRHU7 (ASUS part RNUC15CRHU70000U) and the slim kit is NUC15CRKU7 (RNUC15CRKU70000U). The NUC 15 Pro uses a 0.48L black plastic chassis with integrated Arc 140T graphics only. Don’t confuse it with the NUC 15 Pro+ (silver aluminium, up to Core Ultra 9 285H) or the NUC 15 Performance (a 3L chassis with a discrete RTX 5060 or 5070 laptop GPU).

Sources

Manufacturer:

Independent reviews:

Owner reports:

Parts and stores:

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