LG C4 OLED42C4PUA 42"
The a9 AI Processor Gen7 drives over 8 million self-lit pixels for perfect blacks and luminous HDR, while the 0.1ms response time and 120Hz refresh rate with full HDMI 2.1 VRR support deliver elite gaming speed. Its ultra-slim frame with a barely-there bezel creates a seamless look, and the 42-inch size offers rare flexibility as both a high-end monitor and TV. This display is best for PC and console gamers who need a single screen for both desktop use and cinematic 4K entertainment.
Panoramica
The 30-Second Version
The LG C4 42-inch is a world-class gaming monitor disguised as a TV. Buy it for your desk, not your sunroom.
Pros & Cons
Pro
- Best-in-class gaming performance with 0.1ms response time 99th
- Four full-bandwidth HDMI 2.1 ports, no compromises 99th
- Perfect OLED blacks and infinite contrast in a dark room 86th
- Surprisingly punchy 80W built-in audio with Dolby Atmos 82nd
Contro
- HDR brightness is just average, struggles in sunny rooms
- Picture quality score dragged down by aggressive ABL
- webOS is loaded with ads and promotional content
- 42-inch size is niche, too small for a main living room
Cosa dicono i proprietari
The Word on the Street
Le prove
Performance
The gaming performance is what really surprised us. A 0.1ms response time isn't just a marketing number, it translates to motion clarity that has to be seen to be believed. Fast-paced shooters feel instantaneous, and the support for both G-Sync and FreeSync means you're covered no matter what GPU you're running. The Game Optimizer dashboard is genuinely useful, letting you tweak black stabilizer and frame rate counters without digging through a dozen menus. On the movie side, the a9 AI processor does a solid job cleaning up older 1080p content, though it's not quite the magic trick Sony's processing can be. The 80W audio system is also a pleasant step up from the usual tinny TV speakers, with enough body to make Dolby Atmos content feel somewhat spacious without a soundbar.
Specifications
Full Specifications
Display
| Size | 42" |
| Resolution | 4K |
| Panel Type | OLED |
| Backlight | OLED |
| Aspect Ratio | 16:9 |
| Curved | No |
Picture Quality
| Color Gamut | 100% Color Volume |
| Processor | a9 AI Processor 4K Gen7 |
HDR
| HDR Formats | Dolby Vision, Filmmaker Mode |
| Dolby Vision | Yes |
| HDR10+ | No |
| HLG | No |
Gaming
| Refresh Rate | 120 Hz |
| Response Time | 0.1 |
| VRR | FreeSync, G-Sync |
| ALLM | Yes |
| Game Mode | Yes |
Smart TV
| Platform | webOS |
| Voice Assistant | Alexa, Google Assistant |
| Screen Mirroring | AirPlay |
| Works With | Alexa, Google, Apple HomeKit |
Audio
| Wattage | 80 |
| Dolby Atmos | Yes |
| eARC | Yes |
Connectivity
| HDMI Ports | 4 |
| HDMI Version | 2.1 |
| USB Ports | 3 |
| Wi-Fi | Wi-Fi 6E |
| Bluetooth | 5.1 |
| Ethernet | Yes |
| Optical Audio | Yes |
| VESA Mount | 300x200 |
Power & Size
| Power | 80 |
| Weight | 9.8 kg / 21.6 lbs |
vs Competition
The Sony BRAVIA XR A95L is the picture quality king with its QD-OLED panel and superior processing, but it doesn't come in a 42-inch size and costs a fortune. If you're shopping this size, the C4's real competition is using a dedicated monitor. The Samsung Neo QLED QN800D gets much brighter and is a better fit for a bright living room, but its 8K resolution is overkill and its gaming features aren't as seamless. For pure desktop and console gaming at this size, the LG C4 is in a league of its own. The TCL QM7K is a solid budget alternative if you need a bigger screen and more brightness, but you'll sacrifice those perfect blacks and instant response times.
| Spec | LG C4 OLED42C4PUA 42" | Sony BRAVIA 9 K85XR90 | Samsung Neo QLED QN75QN990FFXZA | Hisense U8 Series 100U8QG | TCL QM6K Series 55QM6K | Roku Plus Series 65R6C7 |
|---|---|---|---|---|---|---|
| Screen Size | 42 | 85 | 75 | 99.5 | 55 | 65 |
| Resolution | 3840x2160 | 3840x2160 | 7680x4320 | 3840x2160 | 3840x2160 | 3840x2160 |
| Panel Type | OLED | Mini-LED | QD-Mini-LED | Mini-LED | QLED | Mini-LED |
| Refresh Rate | 120 | 120 | 120 | 165 | 144 | 60 |
| Hdr | Dolby Vision, Filmmaker Mode | HDR 10, Hybrid Log-Gamma (HLG), Dolby Vision | HDR10, HDR10+, HLG | Dolby Vision, HDR 10+, HDR 10, Hybrid Log-Gamma (HLG) | Dolby Vision, HDR10+, HDR10, HLG | Dolby Vision, HDR 10+, Hybrid Log-Gamma (HLG) |
| Smart Platform | webOS | Google TV | Tizen | Google TV | Google TV | Roku TV |
| Dolby Vision | true | true | false | true | true | true |
| Dolby Atmos | true | true | true | true | true | true |
| Hdmi Version | 2.1 | 2.1 | 2.1 | 2.1 | 2.1 | 2.1 |
| Compare | Compare | Compare | Compare | Compare |
| Prodotto | HDR | Audio | Smart | Gaming | Display | Connectivity | Riscontro degli utenti | Picture Quality |
|---|---|---|---|---|---|---|---|---|
| LG C4 OLED42C4PUA 42" | 67.2 | 86.3 | 77.6 | 99.2 | 74.1 | 98.6 | 82 | 36.7 |
| Sony BRAVIA 9 K85XR90 Compare | 76.8 | 96.9 | 91.6 | 79.3 | 94.5 | 92.7 | 88.1 | 79.8 |
| Samsung Neo QLED QN75QN990FFXZA Compare | 85.1 | 99.5 | 84.7 | 88.3 | 99.6 | 99.9 | 99.9 | 85.3 |
| Hisense U8 Series 100U8QG Compare | 91.5 | 98.2 | 95.7 | 95.1 | 94.5 | 86 | 77 | 98.8 |
| TCL QM6K Series 55QM6K Compare | 98.8 | 88.1 | 97.5 | 93.4 | 77.8 | 88.9 | 88.1 | 98.7 |
| Roku Plus Series 65R6C7 Compare | 76.8 | 82.3 | 99.8 | 58.9 | 85 | 88.9 | 94.5 | 36.7 |
Prezzo
Value & Pricing
At around $800, this is a steal for what you're getting. You're paying for a top-tier gaming monitor that moonlights as a premium smart TV. A dedicated 42-inch OLED gaming monitor with these specs would easily cost you $300-$500 more and probably wouldn't have a smart TV interface or this good of a speaker system. If you need a dual-purpose screen for a desk or a small room, the value here is undeniable. Just don't expect it to light up a bright living room like a mini-LED would.
Approfondisci
Overview
The LG C4 42-inch is the best small OLED you can buy right now, period. It's basically a giant, gorgeous gaming monitor that also happens to be a brilliant 4K TV. The real headline here is that 99th percentile gaming score. With a 120Hz panel, full HDMI 2.1 support across all four ports, and a response time that makes traditional monitors look sluggish, this thing is a dream for PC and console players. But don't get it twisted, it's also a stellar movie-watching screen thanks to those perfect OLED blacks and Dolby Vision. The a9 Gen7 processor does a lot of heavy lifting to keep motion smooth and upscaling sharp, though we wish the peak brightness had a bit more punch for well-lit rooms. If you're sitting at a desk or in a darker den, this is the screen to beat.
Common Questions
Q: Is the 42-inch LG C4 good as a PC monitor?
Absolutely. The text clarity is excellent, and the 120Hz refresh rate with G-Sync and FreeSync makes it buttery smooth for desktop use. Just be mindful of static taskbars, OLED burn-in is a real risk if you're not careful.
Q: Does this TV get bright enough for a living room?
It's fine for a dim or moderately lit room, but it will struggle with glare in a space with lots of windows. If your room is bright, you'll be happier with a mini-LED TV like a Samsung QN90D or a Hisense U8N.
Q: What's the difference between the C4 and the older C3?
The C4 gets a brightness bump and the newer a9 Gen7 processor, which improves upscaling and motion handling. The jump isn't massive, so if you find a C3 on clearance, it's still a fantastic buy.
Who Should Skip This
If you're looking for a bright, punchy HDR experience in a sun-drenched living room, this isn't it. The aggressive auto-brightness limiter and just-average peak brightness will leave you squinting. Go get a Samsung QN90D or a Hisense U8N instead. You'll trade those perfect blacks for a picture that can actually fight the sun.
Verdict
Buy this if you want the ultimate 42-inch display for a desk or a dark media room. It's a no-brainer for PC and console gamers who need one screen to rule them all. The combination of size, speed, and OLED picture quality is unmatched at this price. If you're putting it in a bright family room, look at a brighter mini-LED instead. But for the right setup, the LG C4 42-inch is as good as it gets.