LG UltraFine 40U990A-W vs LG UltraFine evo 32U990A-S
Side-by-side comparison of viewing distance, PPI, and specifications
LG UltraFine evo 32U990A-S
31.5" · 6144×3456 · IPS
Optimal Viewing Distance 39cm
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Category Ranking
Pixel Density (PPI)67in category
LG UltraFine 40U990A-W140 PPI #30
LG UltraFine evo 32U990A-S224 PPI #1
93 PPI224 PPI
HDR Peak Brightness67in category
LG UltraFine 40U990A-W600 nits #22
LG UltraFine evo 32U990A-S600 nits #22
250 nits2000 nits
DCI-P3 Color Gamut63in category
LG UltraFine 40U990A-W99% #2
LG UltraFine evo 32U990A-S98% #31
79%100%
Refresh Rate
LG UltraFine 40U990A-W120 Hz
LG UltraFine evo 32U990A-S60 Hz
StandardHighUltra
Summary
- Sharpness: no visible difference — Both screens exceed the retina threshold at 65cm. The LG UltraFine evo 32U990A-S has 37% higher pixel density (224 vs 140 PPI), but this only becomes visible below 39cm.
- Brightness: comparable — Both screens offer similar brightness (450 vs 450 nits SDR). Neither has a meaningful advantage for outdoor use.
Key Differences
| Specification | LG UltraFine 40U990A-W | LG UltraFine evo 32U990A-S |
|---|---|---|
| Screen Size | 39.7" | 31.5" |
| Refresh Rate | 120 Hz | 60 Hz |
| Color Gamut | sRGB 100% · DCI-P3 99% | sRGB 100% · DCI-P3 98% · Adobe RGB 99.5% |
| Resolution | 5120×2160 | 6144×3456 |
| Pixel Density (PPI) | 140 | 224 |
| Optimal Viewing Distance | 62cm | 39cm |
All specifications
| Specification | LG UltraFine 40U990A-W 2025 | LG UltraFine evo 32U990A-S 2025 |
|---|---|---|
| Screen Size | 39.7" (Better) | 31.5" |
| Resolution | 5120×2160 | 6144×3456 (Better) |
| Pixel Density (PPI) | 140 | 224 (Better) |
| Optimal Viewing Distance | 62cm | 39cm (Better) |
| Panel Type | IPS | IPS |
| Viewing Angle | 178° | 178° |
| Aspect Ratio | 21:9 | 16:9 |
| Refresh Rate | 120 Hz (Better) | 60 Hz |
| Variable Refresh Rate (VRR) | FreeSync Premium | None |
| Response Time | 5 ms GTG | 5 ms GTG |
| HDR Certification | DisplayHDR 600 | DisplayHDR 600 |
| SDR Brightness | 450 nits | 450 nits |
| HDR Peak Brightness | 600 nits | 600 nits |
| Contrast Ratio | 1:2,000 | 1:2,000 |
| Ports | 2x HDMI · 1x DP · USB-C · USB Hub | 1x HDMI · 1x DP · USB-C · USB Hub |
| USB-C Power Delivery | — | 96 W |
| Color Gamut | sRGB 100% · DCI-P3 99% (Better) | sRGB 100% · DCI-P3 98% · Adobe RGB 99.5% |
| Year | 2025 | 2025 |
Frequently Asked Questions
Which has better PPI: LG UltraFine 40U990A-W or LG UltraFine evo 32U990A-S?
The LG UltraFine evo 32U990A-S has 224 PPI compared to 140 PPI for the LG UltraFine 40U990A-W.
Which has a closer optimal viewing distance?
The LG UltraFine evo 32U990A-S requires 39cm vs 62cm for the LG UltraFine 40U990A-W to reach retina quality.
Related Comparisons
Alienware AW2725DF 27" 2024 · 110 PPI · 26.7" · 360 Hz
vs LG UltraFine 40U990A-W 2025 · 140 PPI · 39.7" · 120 Hz
Alienware AW2725DF 27" 2024 · 110 PPI · 26.7" · 360 Hz
vs LG UltraFine evo 32U990A-S 2025 · 224 PPI · 31.5" · 60 Hz
Alienware AW3225QF 32" 2024 · 139 PPI · 31.6" · 240 Hz
vs LG UltraFine 40U990A-W 2025 · 140 PPI · 39.7" · 120 Hz
Alienware AW3225QF 32" 2024 · 139 PPI · 31.6" · 240 Hz
vs LG UltraFine evo 32U990A-S 2025 · 224 PPI · 31.5" · 60 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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