I-O Data has announced the " GD251KHB " series of 24.5-inch gaming monitors, part of the new " GCFX " lineup under its "GigaCrysta" gaming monitor brand, which supports refresh rates of up to 300 Hz.
These monitors are exclusive products available only through specific retail channels.
A 300Hz Gaming Monitor from “GCFX” Is Here! Combining Speed and Value
【新商品のおしらせ📢】
Dual Side Backlight採用 24.5型 FHD/300Hz対応
ゲーミングモニター「GCFX」
「GD251KHBシリーズ」発表✅300Hzの高リフレッシュレ―ト対応
✅Clear AIM DS機能搭載
✅応答速度0.4ms［GTG］#アイオーの新商品 pic.twitter.com/m5g3XHNY2n— GigaCrysta-ギガクリスタ(公式) (@GigaCrysta_io) November 11, 2026
"GCFX" is a series within "GigaCrysta" that prioritizes speed and value.
The "GD251KHB" series features a Full HD (1,920 × 1,080) resolution IPS (HFS) panel with a maximum refresh rate of 300 Hz and a fast response time of 0.4 ms (GTG).
It offers high-end-class refresh rates while remaining affordable.
These are exclusive products available only through specific retail channels and will be offered in three model numbers.
- EX-GD251KHB: Scheduled to ship in late November 2026
- KH-GD251KHB: Scheduled to ship in early December 2026
- HT-GD251KHB: Scheduled to ship in early December 2026
Reduces blur with the "Clear AIM DS" feature, which utilizes Dual Side Backlight technology
Features " Dual Side Backlight," which positions the LEDs that illuminate the LCD panel on both the left and right sides.
This achieves higher brightness compared to conventional products where the LEDs are positioned on only one side.
It also features the " Clear AIM DS " function, which sequentially illuminates the left and right backlights from top to bottom in sync with the LCD panel’s refresh rate.
This allows for clear, blur-free images with less brightness loss than the conventional Clear AIM.
Supports refresh rates up to 300 Hz via DisplayPort
When connected via DisplayPort, the monitor supports a refresh rate of up to 300 Hz, refreshing the image up to 300 times per second.
This is approximately five times faster than a standard 60 Hz display and about twice as fast as a 144 Hz gaming monitor, making it ideal for fast-paced games like first-person shooters (FPS).
When connected via HDMI, the maximum refresh rate is 240 Hz.
For product details, please visit the official I-O DATA website.
| Product Overview | |
|---|---|
| Model Names | EX-GD251KHB, KH-GD251KHB, HT-GD251KHB |
| Panel Type | 24.5-inch TFT widescreen |
| Display Method | IPS (HFS) |
| Maximum Display Resolution | 1,920 × 1,080 |
| Maximum Brightness (Typical) | SDR display: 350 cd/m² HDR display (peak brightness): 500 cd/m² |
| Contrast Ratio (Typical) | 1,000:1 |
| Response Time | 0.4 ms (GTG) |
| Maximum Refresh Rate (Hz) | DisplayPort: 300 HDMI: 240 |
| Video Input Ports | HDMI (HDCP 2.3) × 2, DisplayPort (HDCP 2.3) × 1 |
| Dimensions (W × D × H) | With stand: Approx. 563 × 175 × 412 mm Without stand: Approx. 563 × 49 × 328 mm |
| Weight | With stand: Approx. 3.4 kg Without stand: Approx. 2.7 kg |
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