ASUS ROG Strix XG27JCG vs Kuycon P40K
Side-by-side comparison of viewing distance, PPI, and specifications
Category Ranking
Pixel Density (PPI)67in category
ASUS ROG Strix XG27JCG218 PPI #5
Kuycon P40K139 PPI #41
93 PPI224 PPI
HDR Peak Brightness67in category
ASUS ROG Strix XG27JCG600 nits #22
Kuycon P40K450 nits #48
250 nits2000 nits
DCI-P3 Color Gamut63in category
ASUS ROG Strix XG27JCG97% #44
Kuycon P40K96% #45
79%100%
Refresh Rate
ASUS ROG Strix XG27JCG180 Hz
Kuycon P40K120 Hz
StandardHighUltra
Summary
- Sharpness: no visible difference — Both screens exceed the retina threshold at 65cm. The ASUS ROG Strix XG27JCG has 57% higher pixel density (218 vs 139 PPI), but this only becomes visible below 40cm.
- Brightness: advantage ASUS ROG Strix XG27JCG — Similar SDR brightness (350 vs 400 nits), but the ASUS ROG Strix XG27JCG leads in HDR peak (600 vs 450 nits).
Key Differences
| Specification | ASUS ROG Strix XG27JCG | Kuycon P40K |
|---|---|---|
| Resolution | 5120×2880 | 5120×2160 |
| Pixel Density (PPI) | 218 | 139 |
| Optimal Viewing Distance | 40cm | 63cm |
| Refresh Rate | 180 Hz | 120 Hz |
| Response Time | 1 ms GTG | 8 ms GTG |
| HDR Peak Brightness | 600 nits | 450 nits |
| Color Gamut | sRGB 100% · DCI-P3 97% | sRGB 99% · DCI-P3 96% |
| Year | 2026 | 2025 |
| Screen Size | 27" | 40" |
| SDR Brightness | 350 nits | 400 nits |
| Contrast Ratio | 1:1,500 | 1:2,000 |
All specifications
| Specification | ASUS ROG Strix XG27JCG 2026 | Kuycon P40K 2025 |
|---|---|---|
| Screen Size | 27" | 40" (Better) |
| Resolution | 5120×2880 (Better) | 5120×2160 |
| Pixel Density (PPI) | 218 (Better) | 139 |
| Optimal Viewing Distance | 40cm (Better) | 63cm |
| Panel Type | IPS | IPS |
| Viewing Angle | 178° | 178° |
| Aspect Ratio | 16:9 | 21:9 |
| Refresh Rate | 180 Hz (Better) | 120 Hz |
| Variable Refresh Rate (VRR) | FreeSync Premium Pro | G-SYNC Compatible |
| Response Time | 1 ms GTG (Better) | 8 ms GTG |
| HDR Certification | DisplayHDR 600 | None |
| SDR Brightness | 350 nits | 400 nits (Better) |
| HDR Peak Brightness | 600 nits (Better) | 450 nits |
| Contrast Ratio | 1:1,500 | 1:2,000 (Better) |
| Ports | 2x HDMI · 1x DP · USB-C · USB Hub | 2x HDMI · 1x DP · USB-C · USB Hub |
| USB-C Power Delivery | — | 100 W |
| Color Gamut | sRGB 100% · DCI-P3 97% (Better) | sRGB 99% · DCI-P3 96% |
| Year | 2026 (Better) | 2025 |
Frequently Asked Questions
Which has better PPI: ASUS ROG Strix XG27JCG or Kuycon P40K?
The ASUS ROG Strix XG27JCG has 218 PPI compared to 139 PPI for the Kuycon P40K.
Which has a closer optimal viewing distance?
The ASUS ROG Strix XG27JCG requires 40cm vs 63cm for the Kuycon P40K to reach retina quality.
Related Comparisons
Alienware AW2725DF 27" 2024 · 110 PPI · 26.7" · 360 Hz
vs ASUS ROG Strix XG27JCG 2026 · 218 PPI · 27" · 180 Hz
Alienware AW2725DF 27" 2024 · 110 PPI · 26.7" · 360 Hz
vs Kuycon P40K 2025 · 139 PPI · 40" · 120 Hz
Alienware AW3225QF 32" 2024 · 139 PPI · 31.6" · 240 Hz
vs ASUS ROG Strix XG27JCG 2026 · 218 PPI · 27" · 180 Hz
Alienware AW3225QF 32" 2024 · 139 PPI · 31.6" · 240 Hz
vs Kuycon P40K 2025 · 139 PPI · 40" · 120 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).
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