Yes, within limits that ASUS itself defines. ASUS publishes a sustained-operation statement for its NUC Essential and NUC Pro kits. It defines "24x7 operation" as five years at an average of 50% system utilisation, with an expected service rate of about 1% a year. That makes the ASUS NUC 15 Pro and NUC 16 Pro reasonable choices for kiosks, digital signage, monitoring screens and small always-on services. The conditions matter, though: the unit must run within ASUS's environmental specifications and keep its stock cooling. The statement does not name the gaming-focused ROG NUC. At SourceIT, a NUC 15 Pro Tall Ultra 5 225H with 16GB (2x8GB), 512GB and Windows 11 Pro is S$1,363.06, and a NUC 16 Pro Ultra 5 325 with 16GB, 512GB and Windows 11 Pro is S$1,704.07 (both listed 3 Nov 2026). We have not run our own endurance tests; this is based on ASUS documentation and published reviews.
What exactly does ASUS promise for 24/7 use?
| Item | What ASUS states |
|---|---|
| Definition | "24x7 operation for 5 years with 50% system utilization on average" |
| Expected service rate | About 1% per year |
| Products covered | NUC Essential, NUC Pro and NUC Compute Element kits (ROG NUC not named) |
| MTBF | 50,000 hours, from a test of 40 units over 90 days |
| What voids it | Changing the stock thermal solution, fan or enclosure; use outside published environmental specs; OS and software issues are excluded |
| Operating environment | 0–40°C, 0–92% relative humidity non-condensing (NUC 16 Pro spec page; NUC 15 Pro datasheet) |
| Warranty | Three-year limited warranty on NUCs bought through authorised distributors |
From ASUS, "NUC Essential, NUC Pro and NUC Compute Element Sustained Operation", Rev 1.4 (30 Jan 2025); ASUS NUC 16 Pro specifications; ASUS NUC 15 Pro datasheet; ASUS NUC warranty FAQ.
Two points are easy to misread. "50% utilisation on average" means a mixed load, not a CPU pinned at 100% all day, all year. And an MTBF of 50,000 hours is a statistical failure rate across a fleet, not a promise that each unit lasts 50,000 hours.
Small PCs fail in big ways when they are treated like servers in a cupboard. Give them air, clean power and a sensible update plan, and the size stops being the risk.
Which nonstop jobs suit a NUC?
- Digital signage and menu boards: light, steady loads on up to four 4K screens. See Can One ASUS NUC Power an Entire Digital Signage Network?
- Self-service kiosks and queue systems: a single app in Windows kiosk mode.
- Monitoring screens and dashboards: network operations, building management or CCTV viewing stations.
- Small always-on services: a print server, a lab test node, a home-lab cluster. For anything business-critical, read Can an ASUS NUC Replace Your Office Server? first.
Less suitable: sustained heavy rendering or AI inference around the clock. Reviews show compact NUCs reducing power to manage heat under long full loads. Notebookcheck found the NUC 15 Pro+ "cannot maintain its full performance in the long term" in a sustained benchmark loop, though it stayed fairly steady.
How do you set a NUC up to run unattended?
- Restart after power cuts. In the BIOS, set Power > Secondary Power Settings > "After Power Failure" to "Power On", so the unit comes back by itself.
- Add a UPS. Even a small one rides through brief dips and lets the PC shut down cleanly in a longer outage. The APC Easy UPS range at SourceIT starts at S$85 (listed 3 Nov 2026); see the UPS collection and Your UPS Battery Might Be Dead Before You Realise.
- Pick the right Windows edition. For a fixed-function kiosk or signage player, Windows 11 IoT Enterprise LTSC 2024 (S$395) gets security fixes but no feature updates, so the device changes less. Microsoft describes LTSC as being for special-purpose devices. Windows 11 Pro supports Assigned Access kiosk mode, but Shell Launcher needs Enterprise, Education or IoT Enterprise.
- Control updates. Schedule restarts outside business hours so a display doesn't reboot mid-campaign.
- Plan for remote access. Wake-on-LAN is on by default for wired connections. True out-of-band control with Intel AMT needs a vPro model, such as the NUC 16 Pro with Core Ultra 5 335 or Core Ultra 7 366H; ask us about those SKUs.
- Mind heat and dust. Keep the unit inside 0–40°C with airflow around it. A NUC sealed inside a hot signage enclosure with no ventilation is outside ASUS's conditions.
- Choose storage with headroom. SSDs are rated in terabytes written. Samsung, for example, rates its 990 PRO 1TB at 600 TBW. Constant logging or video recording wears an SSD faster than office use.
What does running 24/7 cost in electricity?
Very little at idle. ENERGY STAR lists the NUC 15 Pro at 4.2W short idle. Left on all year at that level, that is about 36.8 kWh, or roughly S$11.46 a year at SP Group's Q4 2026 tariff of 31.16 cents per kWh including GST. An HP Elite Tower 800 G9, at 27.2W short idle, works out to about S$74.25 a year on the same basis. These are idle-only lower bounds; real signage or kiosk loads draw more, and no published load figure is available for the NUC 15 Pro or NUC 16 Pro. Our post The ASUS NUC Electricity Experiment works through five-year figures.
What about the ROG NUC or the cheapest NUCs?
The ROG NUC is a gaming and creator machine with a 280W to 380W adapter. It is not named in ASUS's 24/7 statement, and ServeTheHome measured the 2024 model at about 255W under combined CPU and GPU load. At the other end, the NUC 14 Essential is light on resources (one memory slot, 16GB maximum) but suits single-screen signage. ASUS has also announced a fanless NUC 14 Essential "designed for 24/7 operation", though it is not yet listed at SourceIT.
Meeting rooms are another always-on job. What a NUC can and cannot do there is covered in ASUS NUC for Microsoft Teams Rooms: Can a Mini PC Become Your Meeting Room Brain?
Buying in Singapore
SourceIT supplies the ASUS NUC 15 Pro Tall Ultra 5 225H 16GB (2x8GB) / 512GB / Windows 11 Pro (S$1,363.06), the NUC 16 Pro Ultra 5 325 / 16GB / 512GB / Windows 11 Pro (S$1,704.07), the NUC 14 Essential N97 barebone (S$247.99), Windows 11 IoT Enterprise LTSC 2024 (S$395) and APC and Eaton UPS units. Prices listed 3 Nov 2026. ASUS NUCs carry a three-year limited warranty; see our ASUS warranty guide. Browse the ASUS NUC collection. For a quotation, use Request for Quotation on the product page, call (65) 6978 3502, email Sales@sourceit.com.sg or use our contact page.
Frequently asked questions
Can an ASUS NUC run 24 hours a day? Yes. ASUS defines 24x7 operation for its NUC Essential and NUC Pro kits as five years at 50% average utilisation, within its environmental specifications and with the stock cooling.
Is the ROG NUC rated for 24/7 use? ASUS's sustained-operation statement names NUC Essential, NUC Pro and NUC Compute Element products, not the ROG NUC.
What temperature can a NUC operate in? ASUS lists 0–40°C and 0–92% relative humidity, non-condensing, for the NUC 16 Pro, and the same range in the NUC 15 Pro datasheet.
Will a NUC turn itself back on after a power cut? Yes, if you set "After Power Failure" to "Power On" in the BIOS. A UPS is still recommended.
How much electricity does a NUC use running all the time? At the NUC 15 Pro's 4.2W ENERGY STAR short-idle figure, about 36.8 kWh a year, or about S$11.46 at 31.16 cents per kWh. Real workloads draw more.
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Researched and verified by the SourceIT team for Singapore buyers.
