Video summary

What If You Never Turn Off Your Computer?

Main summary

Key takeaways

Technology

Leaving a Desktop PC On 24/7: Wear vs. Benefits

Leaving a desktop PC on 24/7 is mainly a question of component wear versus any practical benefits you gain by keeping it powered.

Components Most Likely to Wear Out with Long Continuous Use

Capacitors (motherboard, PSU, GPUs/expansion cards)

  • Capacitors store electricity and are a historical failure point.
  • After the early 2000s “capacitor plague,” manufacturers improved reliability.
  • Solid capacitors (common even on many lower/mid-range boards) are often rated for 20+ years of continuous use at 65°C.
  • Liquid electrolytic capacitors typically last less than solid ones, but many modern PSUs still use them. They can still last ~15 years+ if they’re from reputable brands and temperatures stay moderate.
  • Overall takeaway: unless temperatures are extreme, capacitors are likely fine.

Fans (cooling)

Fan lifespan depends on bearing type:

  • Sleeve bearing fans: ~4 years continuous use
  • Ball bearing fans: ~8 years continuous use (about twice as long)

Fan replacements are usually not expensive, and fan failure usually won’t instantly destroy components unless ventilation is poor.

Hard drives (HDDs)

  • HDDs still show up in many budget prebuilt systems due to cost and the fact they have moving parts.
  • A suggested replacement window is about 5 years of power-on time.
  • Monitor drive health using the drive’s SMART data to avoid impending failures.

Components More Likely to Die from Obsolescence, Not Uptime

  • CPU and RAM are described as more likely to become outdated/obsolete before they fail, even with 24/7 operation.

Upsides of Leaving a PC On

If configured appropriately, a PC kept running can:

  • Run updates while you’re away, so you return to an already-updated system.
  • Support remote access and background services such as:
    • server/router use
    • background tasks like crypto mining

Downsides / What Not to Do

  • Don’t leave it on “just because.” Turning a PC on and off a few times per day isn’t expected to harm components.
  • Leaving it running increases:
    • dust accumulation
    • power usage
  • Safety note: if critical cooling fails while you’re away (for example, a CPU/GPU cooler issue), you could still run into trouble—so uptime doesn’t remove all risk.

Practical Recommendation

  • The video’s main message: nothing bad is likely to happen just from leaving the PC on.
  • Turn off the monitor while you’re away (monitors may fail sooner than PCs).

Sponsorship / Unrelated Tech Mention

Jackery Explorer 1500 Portable Power Station

  • 1500 Wh capacity
  • 1800W output
  • Supports up to 7 devices simultaneously
  • Recharges from 0–80% in ~4 hours
  • Includes a promo code: “LINUS TECH TIPS” for 10% off

Main Speakers / Sources

  • Linus Tech Tips (implied by sponsorship code and narration style)

Original video