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LG OLED42C4PUA 42-Inch OLED evo C4 4K TV vs Roku Pro Series OLED

The LG C4 is the better TV for picture quality and gaming. Its OLED panel gives per-pixel contrast, four HDMI 2.1 ports at 4K 120Hz, and G-Sync plus FreeSync certification. The Roku Pro Series is a QLED Mini-LED set sold in 55, 65 and 75 inches, so it suits a big, bright room where a 42-inch screen is too small. Owners praise the C4's blacks and viewing angles; the Roku wins on size options and its simple interface, but it has only two HDMI ports.

  • Choose the LG C4 if you want the deepest blacks, wide viewing angles, and four HDMI 2.1 ports for a console and a PC.
  • Choose the Roku Pro Series if you need a 55-inch or larger screen, watch in a bright room, and want Roku's simple home screen.

Prices

  • LG OLED42C4PUA 42-Inch OLED evo C4 4K TV: $846.68 at Best Buy (last seen Nov 9)
  • Roku Pro Series OLED: $999.99 at eBay (last seen Nov 12)
  • Difference: the LG OLED42C4PUA 42-Inch OLED evo C4 4K TV is $153.31 cheaper than the Roku Pro Series OLED at the latest prices (Nov 9 and Nov 12)
LG
LG OLED42C4PUA 42 Inch OLED evo AI C4 4K Smart TV

LG OLED42C4PUA 42-Inch OLED evo C4 4K TV

LG OLED42C4PUA 42 Inch OLED evo AI C4 4K Smart TV

$846.68at Best BuyChecked Nov 9
See all prices and details
Visit Best Buy
Pros
  • Perfect blacks and wide viewing angles from OLED
  • Four HDMI 2.1 ports at 4K 120Hz
  • G-Sync and FreeSync support for smooth gaming
  • α9 AI Gen7 processor with strong 4K upscaling
  • Dolby Vision and Dolby Atmos decoding
Cons
  • Only one screen size, 42 inches
  • Lower peak brightness than Mini-LED in bright rooms
  • No anti-glare coating
  • 20W 2.0 speakers are basic
Roku
Roku Pro Series OLED

Roku Pro Series OLED

4.7(609 ratings)
$999.99at eBayChecked 22 h ago
See all prices and details
Visit eBay

Store links may earn us a commission.

Pros
  • Available in 55, 65 and 75 inches
  • Mini-LED backlight delivers high brightness
  • Dolby Vision IQ and HDR10+ support
  • Roku OS is simple to learn and fast
  • Side-firing speakers with Dolby Atmos
Cons
  • Only two HDMI ports
  • No 42-inch option
  • QLED contrast trails OLED in dark rooms
  • Fewer gaming ports for multiple consoles

What separates them

LG OLED42C4PUA 42-Inch OLED evo C4 4K TVRoku Pro Series OLED
Panel technologyOLED evo with self-emissive pixels and infinite contrastQLED with Mini-LED backlight and local dimming
Screen sizes42 inches only55, 65 and 75 inches
HDMI inputs4 ports, all 4K 120Hz with eARC, VRR and ALLM2 ports
HDR formatsDolby Vision, HDR10, HLGDolby Vision IQ, HDR10+, HLG
Gaming syncG-Sync certified and FreeSync compatibleFreeSync Premium Pro, ALLM and VRR
Bright-room performanceOLED brightness is modest; reflections are not suppressedMini-LED reaches higher peak brightness for bright rooms
Audio2.0 channel, 20W, Dolby Atmos decodingSide-firing Soundstage speakers with Dolby Atmos
Smart platformwebOS with LG's AI processor and upscalingRoku OS with a simple home screen and fast search

Price history

$999.99$369.80
Oct 30Nov 13
  • LG OLED42C4PUA 42-Inch OLED evo C4 4K TV: lowest $846.68 on Nov 9 at Best Buy.
  • Roku Pro Series OLED: lowest $369.80 on Nov 3; $549.99 on Nov 13.

Prices at every store

LG OLED42C4PUA 42-Inch OLED evo C4 4K TV

  • Best BuyNew

    In stock

    $846.68Free shippingChecked Nov 9
    Visit Best Buy
  • TeciSoftNew

    In stockReturn policy

    $1,494.78Checked Nov 9
    Visit TeciSoft
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $849.00Free shippingChecked Nov 9
    Visit Amazon
  • 191inc.comNew

    Availability unknown

    $1,199.99Checked Nov 9
    Visit 191inc.com

Store links may earn us a commission.

All 4 stores and price history →

Roku Pro Series OLED

  • eBayNew

    In stockSold by electronic_express

    $999.99Free shippingChecked 22 h ago
    Visit eBay
  • Newegg.comNew

    In stockSold by Electronic Express

    $1,349.99Free shippingChecked 22 h ago
    Visit Newegg.com
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $1,129.99Free shippingChecked 22 h ago
    Visit Amazon

Also available at

  • Best BuyCheck price at Best Buy
  • WalmartCheck price at Walmart
  • WalmartCheck price at Walmart

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All 3 stores and price history →

Specs compared

SpecLG OLED42C4PUA 42-Inch OLED evo C4 4K TVRoku Pro Series OLED
Display Type4K OLEDQLED
Refresh Rate120Hz Native120 Hz
Resolution4K3840 x 2160
HDTV Format4K UHD4K
HDMI Ports42 HDMI ports
Display Resolution4K Ultra HD (3,840 x 2,160)—
Picture Processorα9 AI Processor 4K Gen7—
HDR SupportDolby Vision / HDR10 / HLG—
Audio Output20W—
Speaker System2.0 channel—
HDMI Input4ea (supports 4K 120Hz, eARC, VRR, ALLM, QMS (4…—
USB Input3ea (v 2.0)—
Show all 40 specsShow fewer specs
SpecLG OLED42C4PUA 42-Inch OLED evo C4 4K TVRoku Pro Series OLED
Wi-FiYes (Wi-Fi 5)—
Bluetooth SupportYes (v 5.1)—
TV Weight without Stand9.8—
Network FunctionalitySmart TV—
Supported Resolutions4K—
Backlight TechnologyOLED—
Display HighlightsHDR—
Anti-GlareNo—
Max Resolution V-SyncVRR, Nvidia G-Sync VRR certification—

What reviewers say

LG OLED42C4PUA 42-Inch OLED evo C4 4K TV

Reviewers and owners of the C4 line praise the contrast, motion handling and gaming features, and many 42-inch buyers use it as a monitor. Common complaints are limited brightness in bright rooms, weak built-in audio and reflections on the glossy screen.

What people mention
  • Picture qualityPraisedOwners single out the deep blacks, contrast and color accuracy, especially in dark rooms.
  • GamingPraisedGamers report low lag, working VRR and four HDMI 2.1 ports that cover console and PC at once.
  • BrightnessCriticisedReviewers say peak brightness trails brighter LCD and QD-OLED rivals, which shows in bright rooms and HDR highlights.
  • SoundCriticisedThe 20W speakers are described as thin, with most owners adding a soundbar.

Roku Pro Series OLED

  • 4.7 / 5609 ratings

Rated 4.7 out of 5 from 609 ratings, buyers are broadly positive about the picture and the built-in Roku experience. Complaints center on the limited HDMI count and the price relative to rivals.

What people mention
  • Picture qualityPraisedOwners describe vivid highlights and deep blacks from the mini-LED backlight.
  • HDMI portsCriticisedBuyers say two HDMI inputs are too few for a console, soundbar and streaming device.
  • PriceMixedSome feel the set is expensive compared with rival QLED TVs of the same size.
Reviews
  • TV Reviews From Our Experts
  • Best 65-Inch TVs
  • Best Smart TV of 2026 - CNET
  • Best 55-Inch TVs
  • These 4 Prime Day TV Leftover Deals Feature the Best 4K Models I've Tested for 2026 - CNET

Questions and answers

Which is better for gaming?
The LG C4. It has four HDMI 2.1 ports at 4K 120Hz and is G-Sync certified, so a console and a PC can both run at full speed. The Roku has only two HDMI ports but adds FreeSync Premium Pro and an automatic game mode.
Which has better picture quality in a dark room?
The LG C4. OLED pixels switch off individually, so blacks are true black and contrast is infinite. The Roku's Mini-LED dimming is bright and punchy but can show halos around bright objects on dark backgrounds.
Which is better in a bright room?
The Roku Pro Series. Its Mini-LED backlight reaches higher brightness to fight glare from windows and lamps. The C4's OLED panel is dimmer and has no anti-glare coating.
Is the Roku worth stepping up to for a large living room?
Yes, if you need 55 inches or more. The C4 tops out at 42 inches, so the Roku is the only option here for a big wall. You trade some black-level depth for size and brightness.
Which lasts longer?
Both should last many years. OLED pixels can dim over time with static content, so the C4 suits varied viewing. The Roku's LED backlight has no burn-in risk, which helps if you leave news tickers or scoreboards on all day.
Do both support Dolby Vision?
Yes. The C4 supports Dolby Vision, HDR10 and HLG. The Roku supports Dolby Vision IQ, HDR10+ and HLG, so it adds HDR10+ for some streaming catalogs.

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Buying guides that pick them

  • Best 55-inch TVs
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Display Aspect Ratio
16:9
—
Dynamic Contrast RatioInfinite contrast—
Image Contrast RatioExcellent contrast—
Viewing AngleWide viewing angles—
Viewing Angle (Vertical)178° vertical—
Smart TVYes—
Internet Streaming ServicesNetflix—
Network ConnectivityEthernet, Wi-Fi—
Video InterfaceHDMI—
PC InterfaceHDMI—
CEC EnabledYes (Simplink (HDMI CEC))—
Expansion SlotsCI+—
Dimensions932x577x170 mm (with stand)—
High Definition—Yes
Color—Black
Screen Form—Flat
Assistant Support—Google Assistant, Amazon Alexa
HDR—Yes
Connectivity—Bluetooth, Wi-Fi, USB, HDMI, Ethernet, Optical …
  • Roku interfacePraisedReviewers like the familiar Roku home screen and straightforward remote.