HKC UltraWide CG345UK 34" Curved Review
HKC packs a 240Hz refresh rate into a 34-inch ultrawide for an shockingly low price. We tested it to see where the compromises are.
The 30-Second Version
A 34-inch 1440p ultrawide with a legit 240Hz refresh rate for only $300. It's a speed demon for the price, with a great stand, but expect typical VA panel motion smearing. Worth it if raw refresh rate is your top priority.
Overview
The HKC 34" UltraWide is a curveball in the high-refresh-rate monitor game. It packs a 240Hz refresh rate and a 3440x1440 resolution into a 34-inch VA panel, all for a price that makes you do a double-take. On paper, it's a spec monster aimed at gamers who want speed and immersion without breaking the bank.
Performance
The 240Hz refresh rate is the star here, and it delivers. Motion clarity is excellent, making it a legit contender for competitive gaming. The VA panel's 4000:1 contrast ratio gives you deep blacks, which is great for dark scenes. But, it's still a VA panel, so expect some smearing in fast-paced games compared to the best IPS or OLED screens. The HDR400 certification is fine for a slight boost, but don't expect true HDR pop.
Pros & Cons
Pros
- Insane 240Hz refresh rate for the price. 97th
- Great contrast from the VA panel makes games look rich. 97th
- Fully adjustable stand is a rare find at this cost. 96th
- Solid 95% DCI-P3 color coverage for a gaming monitor. 95th
Cons
- VA panel smearing is noticeable in fast motion. 8th
- HDR400 is basic and not transformative.
- The 'Quasi 4K' marketing is a bit of a stretch.
- It's a big, heavy monitor with zero portability.
Specifications
Full Specifications
Display
| Size | 34" |
| Resolution | 3440 x 1440 |
| Panel Type | VA |
| Aspect Ratio | 16:9 |
| Curved | Yes |
| Curvature | 1500 |
Performance
| Refresh Rate | 240 Hz |
| Response Time | 1 |
Color & HDR
| Brightness | 350 nits |
| Color Gamut | 95% DCI-P3 |
| HDR | HDR400 |
| HDR Support | HDR400 |
Connectivity
| HDMI Ports | 2 |
| DisplayPort | 1 |
Ergonomics
| Height Adjustable | Yes |
| Tilt | Yes |
| Swivel | Yes |
| Pivot | Yes |
| VESA Mount | 75x75 |
Features
| Weight | 9.2 kg / 20.3 lbs |
Value & Pricing
At around $300, the value proposition is wild. You're getting specs that usually cost twice as much. The fully adjustable stand alone is a feature often cut at this price point. You're making clear trade-offs on panel technology, but for the raw speed and screen real estate you get, it's hard to argue with the math.
Price History
vs Competition
Compared to a fast IPS like many 27" 1440p 240Hz models, you lose some motion clarity but gain an ultrawide format and better contrast. Next to the Samsung Odyssey G9 or ASUS QD-OLEDs, you're in a different league of image quality and price—this HKC is about raw speed and value, not pixel-perfect HDR. It sits in a weird, compelling niche: ultrawide immersion with esports-level refresh rates for budget-conscious buyers.
| Spec | HKC UltraWide CG345UK 34" Curved | LG UltraGear LG - UltraGear 27" IPS Dual Mode (4K UHD 180Hz, | MSI MAG MSI MAG 321CUP QD-OLED 31.5" 4K HDR 165 Hz Curved | Samsung Odyssey Samsung Odyssey G7 27" UHD 4K 144Hz IPS AMD | ASUS ROG Strix ASUS ROG Strix 27 inch UHD 4K 160Hz IPS AMD | BenQ Mobiuz BenQ MOBIUZ EX271U 27" 4K HDR 165 Hz Gaming |
|---|---|---|---|---|---|---|
| Screen Size | 34 | 27 | 32 | 27 | 27 | 27 |
| Resolution | 3440 x 1440 | 3840 x 2160 | 3840 x 2160 | 3840 x 2160 | 3840 x 2160 | 3840 x 2160 |
| Panel Type | VA | IPS | OLED | IPS | IPS | IPS |
| Refresh Rate | 240 | 180 | 165 | 144 | 160 | 165 |
| Response Time Ms | 1 | 1 | 0 | 1 | 1 | 1 |
| Adaptive Sync | - | G-Sync Compatible | G-Sync Compatible | G-Sync Compatible | G-Sync Compatible | FreeSync Premium |
| Hdr | HDR400 | HDR400 | HDR400 | HDR10+ | HDR10 | HDR10 |
| Compare | Compare | Compare | Compare | Compare |
| Product | Color | Compact | Display | Feature | Ergonomic | Performance | Connectivity | Social Proof |
|---|---|---|---|---|---|---|---|---|
| HKC UltraWide CG345UK 34" Curved | 94.8 | 8.2 | 79.6 | 97.2 | 96.5 | 95.5 | 89.4 | 54.6 |
| LG UltraGear 27" Dual Mode Compare | 89.8 | 80.4 | 90.5 | 82.4 | 96.5 | 94.1 | 99.9 | 97.3 |
| MSI MAG 321cup Qd-oled 31.5" Compare | 99 | 8.2 | 98.7 | 97.2 | 96.5 | 99.8 | 89.4 | 99.3 |
| Samsung Odyssey G7 27" Compare | 95.1 | 78.7 | 90.5 | 82.4 | 96.5 | 90 | 98.9 | 90.6 |
| ASUS ROG Strix 27 inch Compare | 97.4 | 88.5 | 90.5 | 82.4 | 96.5 | 91.1 | 98.9 | 74 |
| BenQ Mobiuz EX271U 27" Compare | 92 | 88.5 | 90.5 | 82.4 | 96.5 | 92.1 | 91.8 | 74 |
Common Questions
Q: How's the motion clarity for fast games?
The 240Hz refresh rate is excellent for smoothness, but as a VA panel, it shows some noticeable smearing or ghosting in very fast-paced scenes compared to IPS or OLED monitors.
Q: Is the HDR any good?
It's DisplayHDR 400, which is the entry-level certification. You'll get a slight brightness and contrast boost over SDR, but it's not a transformative HDR experience.
Q: Can you really use this for color-accurate work?
With 95% DCI-P3 coverage and a claimed ΔE<2, it's surprisingly capable for a gaming monitor, but professionals should still calibrate it and know it's not a dedicated creative display.
Who Should Skip This
Skip this if you're a purist about motion clarity. Hardcore esports players might want a faster IPS or TN panel. Also, avoid it if you need true, vibrant HDR—save up for an OLED or a monitor with a higher HDR rating.
Verdict
Buy this if you're a competitive gamer who also wants an ultrawide for immersion and productivity, but your budget is tight. The 240Hz is real, the stand is great, and the contrast is good. Just go in knowing the motion handling won't be the absolute best, and HDR is more of a checkbox than a feature.