Desk TV research · 42" 4K OLED TV, 165Hz
LG C6 42-inch OLED as a desk TV: what the testing says
The 42-inch C6 is the desk TV we'd point most people to. RTINGS names the LG C6 its top TV for use as a PC monitor, and at 42 inches it fits an ordinary desk, runs at up to 165Hz from a PC, and takes an Xbox Series X, a PS5 Pro, and a gaming PC on four HDMI 2.1 inputs at once. The catches: the 42-inch misses LG's Brightness Booster, the glossy screen mirrors windows, and static desktop elements carry a real burn-in risk.
Our take
The short version
If you want one screen for a console, a gaming PC, and a workday, start here. RTINGS' guide to the best TVs for PC use (updated September 23, 2026) puts the LG C6 at the top: four HDMI 2.1 ports, 4K at up to 165Hz from a PC, G-Sync and FreeSync support, and the low input lag LG's OLEDs are known for. The 42-inch size is what makes it a desk display. A 4K screen this size has about 105 pixels per inch, close to a 27-inch 1440p monitor, and LG's two feet are just 6.7 inches deep; on the C5 42, which uses the same stand, RTINGS noted there's room for a keyboard in front.
Know what the 42-inch gives up. LG only puts its Brightness Booster in the 48-inch and larger C6, and RTINGS' C6 review (it tested the 65-inch) says the 42-inch isn't as bright. That matters less at arm's length than across a living room, but HDR highlights won't hit as hard as on the 48-inch, which RTINGS found uses a brighter tandem panel. The screen is glossy, so a window behind you becomes a reflection; if your desk faces one, Samsung's matte S90H is the better fit. Text is good, not monitor-perfect: RTINGS says the C6's subpixel layout still keeps text from looking perfectly clear, and Windows ClearType isn't tuned for it.
It launched at $1,399.99 in March 2026 and was $999.99 from Amazon on October 7. The C6 has tools to manage burn-in (pixel cleaning, screen shift, logo dimming), but RTINGS' long-term testing found 2020–2023 OLEDs didn't consistently resist burn-in better than a 2017 LG C7, and it names desktop users as a group for whom burn-in remains a real consideration. LG's one-year warranty doesn't mention burn-in, and it excludes use outside a normal household, naming offices as an example. Auto-hide the taskbar and mix in games and video.
Setup
At your desk
- ~105 PPI
- 4
- 165Hz
- 300 x 200 mm
- Distance: plan on at least 30 inches from your eyes to the screen, so the corners stay in view without turning your head. TechSpot, reviewing the 42-inch LG C2, preferred the 42-inch over the 48-inch for desk use.
- Mounting: VESA 300 x 200 and 21.6 lb without the stand. That's well within heavy-duty arms (Ergotron rates its HX arm to 42 lb), but many arms ship with only a 75/100mm plate, so check for 300 x 200 support or an adapter.
- Sound: LG lists 2.0-channel speakers (20W on LG's UK spec sheet). Fine for calls, thin for games; plan on desktop speakers, a compact soundbar, or a headset. eARC is on HDMI 2, and there's an optical out.
- Settings: label the PC's input as “PC” (RTINGS measured lower input lag with it), auto-hide the Windows taskbar or macOS dock, use dark mode, and let LG's pixel cleaning run when the TV asks.
Pixel density is plain geometry for a 4K screen at the class size, not a measurement.
Pros and cons
What we like
- RTINGS' top TV for use as a PC monitor (Sep 2026)
- Four HDMI 2.1 inputs: an Xbox, a PS5 Pro, and a PC plugged in at once
- Up to 165Hz from a PC, with G-Sync, FreeSync, and HDMI VRR
- Dolby Vision for films and Xbox games, plus HDR10 and HLG
- Fits a normal desk: about 105 PPI, 21.6 lb, compact feet, VESA 300 x 200
Trade-offs
- No Brightness Booster at 42 inches (LG); RTINGS says it isn't as bright as bigger C6 sizes
- Glossy screen reflects windows and lamps behind you
- Text isn't monitor-sharp: the WOLED subpixel layout causes ClearType fringing (RTINGS)
- Burn-in risk from static taskbars; LG's warranty doesn't mention burn-in
- No DisplayPort or USB-C, and thin built-in sound
Who it's for
Buy it if…
- Anyone building one desk for a console, a gaming PC, and work
- Xbox Series X and PS5 Pro owners who want 4K 120Hz with VRR at arm's length
- Desks too shallow for a 48-inch screen
Skip it if…
- Desks facing a bright window: the matte Samsung S90H handles glare better
- Ten-hour days of static spreadsheets: a regular monitor is safer from burn-in
- Anyone who needs DisplayPort, USB-C docking, or a height-adjustable stand
Spec sheet
C6 42 specs
| Screen size | 42" class (LG lists 41.5" viewable) |
|---|---|
| Resolution | 3840 x 2160 |
| Refresh rate | Up to 165Hz from a PC with VRR; 120Hz native |
| Panel | WOLED (LG OLED evo); no Brightness Booster at 42 inches (LG) |
| HDR formats | Dolby Vision, HDR10, HLG (no HDR10+) |
| Variable refresh | HDMI Forum VRR, NVIDIA G-Sync Compatible, AMD FreeSync Premium; ALLM, HGIG |
| HDMI | 4x HDMI 2.1, all 4K 120Hz with VRR and ALLM (165Hz from a PC); eARC on HDMI 2 |
| DisplayPort / USB-C / KVM | None: no DisplayPort or USB-C video, and the USB ports can't connect to a PC (RTINGS) |
| Other ports | 2x USB 2.0 (TV use only), Ethernet, optical audio out, headphone out |
| Processor | α11 AI Processor 4K Gen3 |
| Smart platform | webOS 26 |
| Speakers | 2.0 channel (20W on LG's UK spec sheet) |
| Stand | Two feet, 28.3 in apart; 6.7 in deep; no height or tilt adjustment |
| VESA mount | 300 x 200 mm |
| Screen finish | Glossy |
| Weight | 21.6 lb without stand; 22.3 lb with stand |
| Dimensions | 36.7 x 21.3 x 1.6 in without stand; 36.7 x 22.7 x 6.7 in with stand |
| Warranty | 1 year parts and labor; LG's warranty card doesn't mention burn-in and excludes non-household use (it names offices) |
| Also notable | Game Optimizer and Game Dashboard; “PC” input label; OLED Care (pixel cleaning, screen move, logo dimming); Home Office mode |
From the manufacturer sources listed below. “Not specified” means those sources don't state it.
Watch
C6 42 on video
Video by RTINGS Home Theater on YouTube. Their views are their own.
Cross-shop
Alternatives to consider
LG C5 42-inch OLED
- 42" 4K OLED
- 144Hz
- 4 ports
- ~$849.95
Last year's 42-inch C-series for about $150 less: 144Hz, four full-speed HDMI 2.1 inputs, and Dolby Vision.
Pros
- Pro: What Hi-Fi's best 42-inch OLED (a 2025 award winner)
- Pro: Four full-bandwidth HDMI 2.1 ports; 144Hz from a PC
- Pro: Low input lag at 144Hz (RTINGS)
Trade-offs
- Trade-off: Dimmer than the C6: about 240 to 250 nits in PC mode (RTINGS)
- Trade-off: Sold by a third party on Amazon; LG.com was out of stock
- Desk fit
- 5 out of 5
- Gaming
- 4 out of 5
- Work
- 4 out of 5
Editorial fit scores, 1–5, from published reviews and specs — not lab measurements.
Check priceAffiliate link to Amazon. Price approx., seen Oct 2026.
Read the breakdown: LG C5 42-inch OLEDLG C6 48-inch OLED
- 48" 4K OLED
- 165Hz
- 4 ports
- ~$1,099
The brightest desk TV here: a 48-inch C6 with a tandem panel and 165Hz, for a deep desk or a wall mount.
Pros
- Pro: RTINGS: clearly brighter and more colorful than the C5 42, thanks to a tandem panel
- Pro: Four HDMI 2.1 inputs, 165Hz from a PC, G-Sync and FreeSync; macOS works at 165Hz
- Pro: Very low input lag at 165Hz with the PC label (RTINGS)
Trade-offs
- Trade-off: Needs a deep desk or a wall mount; text is softer at about 92 PPI
- Trade-off: Fixed 9.1-inch-deep pedestal that RTINGS says wobbles
- Gaming
- 5 out of 5
- HDR
- 5 out of 5
- Value
- 4 out of 5
Editorial fit scores, 1–5, from published reviews and specs — not lab measurements.
Check priceAffiliate link to Amazon. Price approx., seen Oct 2026.
Read the breakdown: LG C6 48-inch OLEDSamsung S90H 48-inch OLED
- 48" 4K OLED
- 165Hz
- 4 ports
- ~$1,097.99
The desk TV for bright rooms: a matte Glare Free 48-inch OLED with 165Hz on all four HDMI inputs.
Pros
- Pro: Matte Glare Free coating: RTINGS' pick for bright rooms over the LG C6
- Pro: 165Hz on all four HDMI 2.1 ports; FreeSync Premium Pro and G-Sync
- Pro: RGB tandem panel at 48 inches, per RTINGS
Trade-offs
- Trade-off: No outlet has reviewed the 48-inch yet; measurements come from 55- and 65-inch sets
- Trade-off: Matte coating lifts blacks slightly in a lit room (Tom's Guide, CNET)
- Gaming
- 5 out of 5
- HDR
- 4 out of 5
- Value
- 4 out of 5
Editorial fit scores, 1–5, from published reviews and specs — not lab measurements.
Check priceAffiliate link to Amazon. Price approx., seen Oct 2026.
Read the breakdown: Samsung S90H 48-inch OLED
Related guides and comparisons
Sources
Manufacturer specs
- LG OLED42C6PUA specifications (opens in a new tab) — Panel, refresh rate, HDMI, VRR, HDR, stand, VESA, dimensions, weight
- LG 2026 OLED TV rollout (press release, Mar 5, 2026) (opens in a new tab) — Launch prices; Brightness Booster only on the 48-inch and larger C6
- LG US TV limited warranty (opens in a new tab) — One year parts and labor; household-use exclusion
Published testing and reviews
- RTINGS (opens in a new tab) — The Best TVs for PC Monitors (updated Sep 23, 2026): top pick
- RTINGS LG C6 review (opens in a new tab) — Tested the 65-inch (Apr 20, 2026); says the 42-inch isn't as bright
- RTINGS burn-in update (opens in a new tab) — OLED Burn-In Hasn't Improved Like We Expected (Aug 14, 2026)
- Tom's Guide (opens in a new tab) — LG C6 review (65-inch, Apr 9, 2026): Editor's Choice
Published reviews and manufacturer specs, researched October 7, 2026. We didn't test these TVs ourselves; judgments credited to an outlet are that outlet's.
Disclosure: Our picks are independent and editorial — a synthesis of published reviews and manufacturer specs, not our own lab measurements. Prices are approximate Amazon prices seen October 7, 2026, not live quotes. As an Amazon Associate we earn from qualifying purchases made through links on this page, at no extra cost to you.