Xiaomi Redmi Note 15
$210
Xiaomi Redmi Note 15 vs Xiaomi Redmi K90 Ultra
Xiaomi Redmi K90 Ultra
$420
| Redmi Note 15 | Redmi K90 Ultra | |
|---|---|---|
| Price | USD 210 | USD 420 |
| Battery | 6000 mAh | 8550 mAh |
| Charging (W) | 33 | 100 |
| RAM | 6 GB | 16 GB |
| Storage | 128 GB | 512 GB |
| Chipset | MediaTek Helio G100-Ultra | Qualcomm Snapdragon 8 Elite |
| Display | 6.77" • AMOLED • 120Hz | 6.83" • AMOLED gaming display • 165Hz |
| Main Camera | 108MP | 50MP |
| Front Camera | 20MP | 20MP |
| OS | Android 15 | Android 16 |
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Key Differences
Only the differences that meaningfully separate these phones.
Price
USD 210 cheaper
Redmi Note 15USD 210
vsRedmi K90 UltraUSD 420
RAM
10 GB more RAM
Redmi K90 Ultra16 GB RAM
vsRedmi Note 156 GB RAM
Storage
4× more storage
Redmi K90 Ultra512 GB
vsRedmi Note 15128 GB
Battery
43% larger battery
Redmi K90 Ultra8,550 mAh
vsRedmi Note 156,000 mAh
Charging
67 W faster wired charging
Redmi K90 Ultra100 W wired
vsRedmi Note 1533 W wired
Performance
Different chipsets
Redmi Note 15MediaTek Helio G100-Ultra
vsRedmi K90 UltraQualcomm Snapdragon 8 Elite
Display
165 Hz refresh
Redmi K90 Ultra165 Hz
vsRedmi Note 15120 Hz
Best For
Where each phone stands out based on this comparison.
Best if you want
Lower priceXiaomi Redmi Note 15
Much lower purchase priceUSD 210
Best if you want
More hardwareXiaomi Redmi K90 Ultra
More RAM and storage16 GB RAM · 512 GB
Larger battery8,550 mAh
Faster wired charging100 W wired
Up to 165 Hz display6.83-inch
What CompareTab says about Xiaomi Redmi Note 15 vs Xiaomi Redmi K90 Ultra
Xiaomi Redmi K90 Ultra has clear advantages in memory, battery capacity and display refresh rate over Redmi Note 15, with 16 GB of RAM versus 6 GB, 512 GB of storage versus 128 GB, a 8550 mAh battery versus 6000 mAh, and a 165 Hz display instead of 120 Hz. It also adds optical image stabilization on the main camera, an ultrawide rear camera, and 100W charging. Xiaomi Redmi Note 15, however, is around $210 cheaper and lighter at 183.7 g versus 227 g. The choice comes down to Redmi K90 Ultra’s extra RAM, storage, faster charging, battery capacity, and smoother display versus Redmi Note 15’s lower price and lighter build.
