Kuycon P40K vs LG 27GP850-B 27"
Side-by-side comparison of viewing distance, PPI, and specifications
Category Ranking
Pixel Density (PPI)67in category
Kuycon P40K139 PPI #41
LG 27GP850-B 27"109 PPI #55
93 PPI224 PPI
HDR Peak Brightness67in category
Kuycon P40K450 nits #48
LG 27GP850-B 27"400 nits #51
250 nits2000 nits
DCI-P3 Color Gamut63in category
Kuycon P40K96% #45
LG 27GP850-B 27"98% #31
79%100%
Refresh Rate
Kuycon P40K120 Hz
LG 27GP850-B 27"165 Hz
StandardHighUltra
Summary
- Sharpness: advantage Kuycon P40K — At 65cm, the Kuycon P40K is retina (139 PPI) while the LG 27GP850-B 27" is not — you need to sit at least 80cm away for pixel-free viewing.
- Brightness: comparable — Both screens offer similar brightness (400 vs 400 nits SDR). Neither has a meaningful advantage for outdoor use.
Key Differences
| Specification | Kuycon P40K | LG 27GP850-B 27" |
|---|---|---|
| Screen Size | 40" | 27" |
| Resolution | 5120×2160 | 2560×1440 |
| Pixel Density (PPI) | 139 | 109 |
| Optimal Viewing Distance | 63cm | 80cm |
| HDR Peak Brightness | 450 nits | 400 nits |
| Contrast Ratio | 1:2,000 | 1:1,000 |
| Year | 2025 | 2021 |
| Refresh Rate | 120 Hz | 165 Hz |
| Response Time | 8 ms GTG | 1 ms GTG |
| Color Gamut | sRGB 99% · DCI-P3 96% | sRGB 135% · DCI-P3 98% · Adobe RGB 93% |
All specifications
| Specification | Kuycon P40K 2025 | LG 27GP850-B 27" 2021 |
|---|---|---|
| Screen Size | 40" (Better) | 27" |
| Resolution | 5120×2160 (Better) | 2560×1440 |
| Pixel Density (PPI) | 139 (Better) | 109 |
| Optimal Viewing Distance | 63cm (Better) | 80cm |
| Panel Type | IPS | IPS |
| Viewing Angle | 178° | 178° |
| Aspect Ratio | 21:9 | 16:9 |
| Refresh Rate | 120 Hz | 165 Hz (Better) |
| Variable Refresh Rate (VRR) | G-SYNC Compatible | FreeSync Premium |
| Response Time | 8 ms GTG | 1 ms GTG (Better) |
| HDR Certification | None | DisplayHDR 400 |
| SDR Brightness | 400 nits | 400 nits |
| HDR Peak Brightness | 450 nits (Better) | 400 nits |
| Contrast Ratio | 1:2,000 (Better) | 1:1,000 |
| Ports | 2x HDMI · 1x DP · USB-C · USB Hub | 2x HDMI · 1x DP · USB Hub |
| USB-C Power Delivery | 100 W | — |
| Color Gamut | sRGB 99% · DCI-P3 96% | sRGB 135% · DCI-P3 98% · Adobe RGB 93% (Better) |
| Year | 2025 (Better) | 2021 |
Frequently Asked Questions
Which has better PPI: Kuycon P40K or LG 27GP850-B 27"?
The Kuycon P40K has 139 PPI compared to 109 PPI for the LG 27GP850-B 27".
Which has a closer optimal viewing distance?
The Kuycon P40K requires 63cm vs 80cm for the LG 27GP850-B 27" to reach retina quality.
Related Comparisons
Alienware AW2725DF 27" 2024 · 110 PPI · 26.7" · 360 Hz
vs Kuycon P40K 2025 · 139 PPI · 40" · 120 Hz
Alienware AW2725DF 27" 2024 · 110 PPI · 26.7" · 360 Hz
vs LG 27GP850-B 27" 2021 · 109 PPI · 27" · 165 Hz
Alienware AW3225QF 32" 2024 · 139 PPI · 31.6" · 240 Hz
vs Kuycon P40K 2025 · 139 PPI · 40" · 120 Hz
Alienware AW3225QF 32" 2024 · 139 PPI · 31.6" · 240 Hz
vs LG 27GP850-B 27" 2021 · 109 PPI · 27" · 165 Hz
Methodology & Sources
Formula: Retina distance (cm) = 3438 / PPI. Displayed values are rounded for readability.
Sources: Official manufacturer spec sheets and product pages. Specs are normalized before comparisons.
Comparison winners are calculated metric by metric (higher is better for most specs; lower is better for distance/response time).
Last updated: