42 facts in comparison
Samsung Odyssey G4 G40H 25-inch vs LG UltraGear 25G590B-B
This comparison puts the Samsung Odyssey G4 G40H 25-inch and LG UltraGear 25G590B-B side by side — two monitors measured against the same 42-spec sheet, with every meaningful gap scored and explained. On our weighted VS Score the LG UltraGear 25G590B-B finishes ahead, 94 to 78 — a decisive result.
The single biggest measurable gap is refresh rate: 300 Hz vs 1,000 Hz. None of our retail partners currently lists the LG UltraGear 25G590B-B, so availability may be limited and price cannot factor into this comparison. A transparency note before you dive in: the spec sheets are Samsung Odyssey G4 G40H 25-inch 79% and LG UltraGear 25G590B-B 81% complete. Anything unverified shows as Unknown and is left out of the scores — we never estimate a missing value.
Where the Samsung Odyssey G4 G40H 25-inch beats the LG UltraGear 25G590B-B
- A slightly higher pixel density ?90 ppi vs 88 ppi
- Has pivot adjustment ?
Where the LG UltraGear 25G590B-B beats the Samsung Odyssey G4 G40H 25-inch
- A much higher refresh rate ?1,000 Hz vs 300 Hz
- DisplayHDR 400 HDR ?DisplayHDR 400 vs HDR10
- More HDMI ports ?2 vs 1
- Has USB-C ?
Key real-world differences
The spec sheet pulls in both directions. These are the gaps big enough to shape the decision — with the actual figures, and what each one means in real-world use.
- Refresh ratePicture300 Hz vs 1,000 Hz — 3.3× more for the LG UltraGear 25G590B-B
Higher refresh rates are smoother for gaming and scrolling.
The step from 60 to 120 Hz is obvious; differences above 120 Hz are far subtler in everyday use.
- USB-CConnectivityNo vs Yes — only the LG UltraGear 25G590B-B has it
A USB-C input, often with power delivery for laptops.
- HDRPictureHDR10 vs DisplayHDR 400 — advantage LG UltraGear 25G590B-B
The certified HDR tier.
- PivotErgonomics & designYes vs No — only the Samsung Odyssey G4 G40H 25-inch has it
Rotate to portrait orientation.
- HDMI portsConnectivity1 vs 2 — 2× more for the LG UltraGear 25G590B-B
More HDMI inputs connect more devices.
Which one should you buy?
There is no single answer — it depends on what you will actually use it for. Match your priority to the pick below.
- Best for picture LG UltraGear 25G590B-B takes the category 93 to 76 — driven by refresh rate (300 Hz vs 1,000 Hz).
- Best for connectivity LG UltraGear 25G590B-B takes the category 100 to 59 — driven by USB-C (No vs Yes).
- Best for ergonomics & design Samsung Odyssey G4 G40H 25-inch takes the category 100 to 80 — driven by pivot (Yes vs No).
- The safe all-rounder LG UltraGear 25G590B-B wins more of the categories that carry real weight, topping the overall VS Score at 94.
Where each one falls short
Samsung Odyssey G4 G40H 25-inch
- Refresh rate: 300 Hz vs 1,000 Hz
- USB-C: No vs Yes
- HDR: HDR10 vs DisplayHDR 400
- 9 specs are unreported (shown as Unknown) and excluded from its scores.
LG UltraGear 25G590B-B
- Pivot: Yes vs No
- 8 specs are unreported (shown as Unknown) and excluded from its scores.
What matters to you?
Drag the sliders to weight each category and re-rank the products to suit your priorities.
Score breakdown
Picture
Gaming
Ergonomics & design
Connectivity
Features
Specs last verified September 2, 2026Samsung Odyssey G4 G40H 25-inch: 33 of 42 specs verified (79%)LG UltraGear 25G590B-B: 34 of 42 specs verified (81%)Unverified specs show as Unknown — never estimated, never scored
Where to buy
No price is available to track yet.
Prices and availability may change. Check the retailer before buying. We may earn a commission on purchases.
What reviewers say
The bottom line
The LG UltraGear 25G590B-B is the clear winner, scoring 94 to 78 on our VS Score. It leads on Picture and Connectivity. The Samsung Odyssey G4 G40H 25-inch answers back with stronger Ergonomics & design. Pick the LG UltraGear 25G590B-B unless Ergonomics & design matters most to you — then the Samsung Odyssey G4 G40H 25-inch is the smarter buy.
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