ASUS ROG Strix XG309CM vs ASUS ROG Swift OLED PG34WCDM 34"
Side-by-side comparison of viewing distance, PPI, and specifications
ASUS ROG Swift OLED PG34WCDM 34"
33.94" · 3440×1440 · OLED
Optimal Viewing Distance 80cm
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Category Ranking
Pixel Density (PPI)67in category
ASUS ROG Strix XG309CM94 PPI #65
ASUS ROG Swift OLED PG34WCDM 34"110 PPI #47
93 PPI224 PPI
HDR Peak Brightness67in category
ASUS ROG Strix XG309CM300 nits #65
ASUS ROG Swift OLED PG34WCDM 34"1300 nits #3
250 nits2000 nits
DCI-P3 Color Gamut
ASUS ROG Swift OLED PG34WCDM 34"99% #2
79%100%
Refresh Rate
ASUS ROG Strix XG309CM220 Hz
ASUS ROG Swift OLED PG34WCDM 34"240 Hz
StandardHighUltra
Summary
- Sharpness: advantage ASUS ROG Swift OLED PG34WCDM 34" — Neither screen reaches retina quality at 65cm. The ASUS ROG Swift OLED PG34WCDM 34" gets there at 80cm vs 93cm for the ASUS ROG Strix XG309CM.
- Brightness: advantage ASUS ROG Swift OLED PG34WCDM 34" — Similar SDR brightness (300 vs 270 nits), but the ASUS ROG Swift OLED PG34WCDM 34" leads in HDR peak (1300 vs 300 nits).
Key Differences
| Specification | ASUS ROG Strix XG309CM | ASUS ROG Swift OLED PG34WCDM 34" |
|---|---|---|
| SDR Brightness | 300 nits | 270 nits |
| Color Gamut | sRGB 110% | sRGB 135% · DCI-P3 99% · Adobe RGB 95% |
| Screen Size | 29.5" | 33.94" |
| Resolution | 2560×1080 | 3440×1440 |
| Pixel Density (PPI) | 94 | 110 |
| Optimal Viewing Distance | 93cm | 80cm |
| Refresh Rate | 220 Hz | 240 Hz |
| Response Time | 1 ms GTG | 0.0 ms GTG |
| HDR Peak Brightness | 300 nits | 1300 nits |
| Contrast Ratio | 1:1,000 | 1:1,500,000 |
| USB-C Power Delivery | 15 W | 90 W |
| Year | 2022 | 2024 |
All specifications
| Specification | ASUS ROG Strix XG309CM 2022 | ASUS ROG Swift OLED PG34WCDM 34" 2024 |
|---|---|---|
| Screen Size | 29.5" | 33.94" (Better) |
| Resolution | 2560×1080 | 3440×1440 (Better) |
| Pixel Density (PPI) | 94 | 110 (Better) |
| Optimal Viewing Distance | 93cm | 80cm (Better) |
| Panel Type | IPS | OLED |
| Viewing Angle | 178° | 178° |
| Aspect Ratio | 21:9 | 21:9 |
| Refresh Rate | 220 Hz | 240 Hz (Better) |
| Variable Refresh Rate (VRR) | FreeSync Premium | FreeSync Premium Pro |
| Response Time | 1 ms GTG | 0.0 ms GTG (Better) |
| HDR Certification | None | DisplayHDR True Black 400 |
| SDR Brightness | 300 nits (Better) | 270 nits |
| HDR Peak Brightness | 300 nits | 1300 nits (Better) |
| Contrast Ratio | 1:1,000 | 1:1,500,000 (Better) |
| Ports | 1x HDMI · 1x DP · USB-C · USB Hub | 2x HDMI · 1x DP · USB-C · USB Hub |
| USB-C Power Delivery | 15 W | 90 W (Better) |
| Color Gamut | sRGB 110% (Better) | sRGB 135% · DCI-P3 99% · Adobe RGB 95% |
| Year | 2022 | 2024 (Better) |
Frequently Asked Questions
Which has better PPI: ASUS ROG Strix XG309CM or ASUS ROG Swift OLED PG34WCDM 34"?
The ASUS ROG Swift OLED PG34WCDM 34" has 110 PPI compared to 94 PPI for the ASUS ROG Strix XG309CM.
Which has a closer optimal viewing distance?
The ASUS ROG Swift OLED PG34WCDM 34" requires 80cm vs 93cm for the ASUS ROG Strix XG309CM to reach retina quality.
Related Comparisons
Alienware AW2725DF 27" 2024 · 110 PPI · 26.7" · 360 Hz
vs ASUS ROG Strix XG309CM 2022 · 94 PPI · 29.5" · 220 Hz
Alienware AW2725DF 27" 2024 · 110 PPI · 26.7" · 360 Hz
vs ASUS ROG Swift OLED PG34WCDM 34" 2024 · 110 PPI · 33.94" · 240 Hz
Alienware AW3225QF 32" 2024 · 139 PPI · 31.6" · 240 Hz
vs ASUS ROG Strix XG309CM 2022 · 94 PPI · 29.5" · 220 Hz
Alienware AW3225QF 32" 2024 · 139 PPI · 31.6" · 240 Hz
vs ASUS ROG Swift OLED PG34WCDM 34" 2024 · 110 PPI · 33.94" · 240 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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