LG 52G930B vs 45GX950A — Which 5K2K Ultrawide Should You Buy?

Both are LG UltraGear 5K2K ultrawides: 5120 × 2160 pixels in a 21:9 shape, with DisplayPort 2.1 and USB-C charging at 90W. Where they split is the panel. The 52G930B is a 51.6-inch VA screen at 240Hz. The 45GX950A is a 44.5-inch OLED at 165Hz. Most of what follows comes back to that one difference.

If screen height and refresh rate matter most, buy the 52G930B. Owners who moved to it from 32:9 monitors say the height is the reason they keep it, and it runs its full resolution at 240Hz against the 45’s 165Hz.

If contrast, text sharpness or desk space matter most, buy the 45GX950A. LG rates it at 1.5M:1 contrast against the 52’s 4000:1, and it packs the same pixels into a smaller panel, so it has 125 PPI against 108. It’s also narrower, lighter, and comes with a two-year warranty instead of one.

How this page was put together: specs come from LG’s US product pages, LG’s 52G930B spec sheet and LG’s launch press releases, linked in the Source column. Owner impressions come from the 52G930B owner reports collected for our 52G930B review, as of October 2026. No independent review compares these two models directly yet, and we haven’t collected 45GX950A owner reports, so its column rests on LG’s specs. I haven’t used either monitor myself.

Specs side by side

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The 52G930B sheet link is LG Electronics USA’s own spec sheet, mirrored on Manuals.plus because LG doesn’t host it on lg.com. Launch prices are LG’s own; street prices have moved since, so check the current price before deciding.

What owners say about the trade

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The clearest evidence comes from owners of the 52G930B who also know LG’s OLEDs. One owner, five months in (free LG unit), has a 45-inch LG OLED at home, rates its colors and blacks clearly better, and still prefers the 52 for daily use because of the extra vertical space and a worry about burn-in, since long-running work stays on screen overnight. Another owner misses OLED blacks for gaming but rates the 52’s refresh, brightness and response time as good as or better than their old OLED. A third owner, two months in (free LG unit), coming from OLED, says blacks aren’t as deep and HDR has less impact.

Not every 52G930B buyer was happy with the panel. A Canadian Amazon buyer (2 stars, April 2026) was let down by the edges, citing the geometry at the sides and how the VA panel looks off-axis, and told other shoppers to get the 45-inch instead. The HighTechCheck review of the 52 also points to VA “purple haze” and viewing-angle issues.

Buyers weighing these two on Reddit (one, two, three) keep coming back to the same questions: how much OLED upkeep they’re willing to live with, how they split their time between work and games, and how much size and vertical space they want. The third is from someone who saw both at an LG event in Frankfurt: they found the 45’s contrast striking, found the 52’s 108 PPI plenty sharp for everyday use, and said they’d pick the 45.

Which one fits you

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Mostly gaming, dark scenes and HDR: the 45GX950A. On paper the OLED is far ahead on contrast (1.5M:1 against 4000:1) and response time (0.03ms against 1ms), and LG lists it as G-Sync Compatible, which it says the 52 isn’t certified as. Every 52 owner above who came from OLED mentions the gap in blacks.

Competitive games where frame rate at full resolution matters: the 52G930B. It runs 5120 × 2160 at 240Hz; the 45 tops out at 165Hz at that resolution, reaching 330Hz only by dropping to its WFHD dual mode. The visitor who tried both in Frankfurt found the resolution in that mode too low, even sitting farther back. An owner who moved from Samsung’s 57-inch Neo G9 reports no smearing on the 52 at 240Hz with Response Time set to Fast. That’s one owner at one setting, not a lab test.

Mixed work and gaming with static windows all day: lean 52G930B. This is the five-month owner’s reasoning: long-running work stays on screen, burn-in is the worry, and the 52’s height fits documents and terminal windows side by side, which they find much easier on the eyes.

Text and spreadsheets up close: the 45GX950A. Same pixel count on a smaller panel means 125 PPI against 108. Owners of the 52 find text readable at 100% scaling but less sharp than denser screens.

Smaller desk or a monitor arm: the 45GX950A. It’s 39.0 inches wide on its stand against 46.24, and the panel alone weighs 20.7 lb against 26.9 lb, which widens your choice of arms. Both use a 100 × 100 mm VESA mount. Our guide to monitor arms for ultrawide and heavy screens covers what to check.

Most cautious about long-term risk: it depends which risk. If OLED burn-in is the worry, the 52 is the one the five-month owner chose. If warranty cover is the worry, the 45 comes with two years of parts and labor to the 52’s one. We couldn’t find whether LG’s warranty covers burn-in, so ask LG before you buy.

The short version

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• Bigger canvas, more height, 240Hz at 5K2K: LG 52G930B
• OLED contrast, sharper text, smaller footprint, longer warranty: LG 45GX950A

For the full owner picture on the 52, see the LG 52G930B review .

LG 52G930B-B 52-inch UltraGear Evo G9 5K2K Curved Gaming Monitor Amazon ↗ LG 45GX950A-B 45-inch UltraGear OLED 5K2K Curved Gaming Monitor Amazon ↗