LG's 45-inch UltraGear OLED gaming monitor has dropped to $1,200.18 at Amazon, cutting $499.81 from its $1,699.99 list price. It also carries the widest gap to a maker's own price among the four monitors cut here, because LG's own store still asks $1,249.99.
The 45GX900A-B is a 3440x1440 ultrawide on a steep 800R curve, rated at 240Hz and 0.03ms, with DisplayHDR True Black 400 and 65W USB-C power delivery. LG puts peak brightness at 1300 nits measured over 1.5% of the screen, while its spec sheet lists a full-screen typical figure of 275 cd/m2.
The three that fell with it are an Acer 31.5-inch 4K, an ASUS 27-inch 1440p and a Samsung 27-inch 5K. Only three of the four are OLED panels.
LG 45GX900A-B specifications
| Specification | LG 45GX900A-B |
|---|---|
| Panel | 44.5-inch OLED, 800R curve |
| Resolution | 3440 x 1440, 21:9 |
| Refresh rate | 240Hz |
| Response time | 0.03ms (GtG) |
| Brightness | 1300 nits peak at 1.5% APL, 275 cd/m2 typical |
| Color and HDR | 98.5% DCI-P3, DisplayHDR True Black 400 |
| Contrast | 1,500,000:1 typical |
| Ports | 2x HDMI 2.1, DisplayPort 1.4 with DSC, USB-C with 65W PD |
| Warranty | 2 years parts and labor, OLED panel included |
| Price | $1,200.18, list $1,699.99 |
That two-year term is the shortest panel cover in this group. ASUS and Acer both run three years on their OLED monitors, the same cover ASUS applies to its 4K Strix models.
How the four compare, and why Acer's anchor is soft
| Monitor | Panel | What separates it | Price | List price |
|---|---|---|---|---|
| LG 45GX900A-B | 44.5-inch OLED | 3440x1440 ultrawide, 800R curve | $1,200.18 | $1,699.99 |
| Acer Predator X32 X | 31.5-inch QD-OLED | 4K at 240Hz on HDMI as well as DisplayPort | $679.99 | $999.99 |
| Samsung Odyssey G8 G80HF | 27-inch Fast IPS | 5K at 180Hz, or 1440p at 360Hz | $599.99 | $949.99 |
| ASUS ROG PG27AQDM-R | 26.5-inch WOLED | 1440p 240Hz, DisplayPort only | $499.00 | $699.00 |
The Predator X32 X is a 31.5-inch Quantum Dot OLED at 3840x2160, and Acer's spec table rates both HDMI 2.1 inputs for the full 240Hz rather than DisplayPort alone. Acer sells it for $699.99 on its own product page, so $679.99 saves $20 against the maker.
The $999.99 list price is the weak part. Acer uses no such figure, pairing its $699.99 with a $1,199.99 was-price instead, and the gap to Amazon is far narrower than the $100 the CE270K G showed earlier this month.
Stock is the other caveat on this row. Amazon's listing says only 16 units are left.
Samsung's 5K panel is not an OLED
The 27-inch Odyssey G8 G80HF uses a Fast IPS panel, which the Amazon title states and Samsung's own spec sheet confirms. It is the sharpest screen here at 5120x2880 and 218 ppi, with a dual mode that switches to 1440p at 360Hz.
The trade is contrast. Samsung rates it at 1,000:1 static against 1,500,000:1 on the three OLEDs, with 350 cd/m2 typical and 400 nits peak, and lists 99% sRGB rather than a DCI-P3 number.
Samsung charges the same $599.99 on its own site, where the listing is currently marked out of stock. Amazon is therefore the only one of the two holding that price with stock behind it.
Why the ASUS is the wrong buy at $499
The ROG PG27AQDM-R is a 26.5-inch WOLED at 2560x1440 and 240Hz, with an anti-glare coating, a monitor arm in the box and three years of warranty including panel burn-in. ASUS charges exactly $499.00 for it in its own store, so the 29% is a cut against a $699 list, not against what ASUS asks today.
A newer ASUS is the bigger problem. The ROG XG27AQDMGR is $399.00 at the same retailer, $100 less for the same 27-inch 1440p 240Hz class, and ASUS rates that glossy panel at 1300 nits against 1000 here.
MSI goes lower still. The MAG 272QP QD-OLED X24 is $349.99, $149.01 below the ASUS, though that panel is rated at only 400 nits for HDR and carries no DisplayHDR certification.
One more line in the ASUS spec sheet matters. Its signal-frequency table caps both HDMI inputs at 120Hz, so 240Hz on this monitor requires the single DisplayPort 1.4 connection.
The $499.00 is still a real fall at Amazon. The same listing carried $619.99 on September 12, so it has come down $120.99 since.
What the listings do not say
None of the four listings gives an end date for these prices. Samsung publishes no warranty term for the G80HF on its product page, and Acer's product page carries none either, though Acer states a three-year burn-in cover for its OLED monitors on a separate support page.
The brightness figures also resist comparison. LG gives 1300 nits at 1.5% APL, while ASUS gives 1000 nits over 3% of the screen with HDR on.
Acer gives 1000 nits with no window size at all. The three numbers therefore do not describe the same test.
Prices at Amazon move without notice, and the Acer listing was already down to its last 16 units at the time of writing.
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