Xiaomi Redmi A3x
$80
Xiaomi Redmi A3x vs Xiaomi Redmi K90 Ultra
Xiaomi Redmi K90 Ultra
$420
| Redmi A3x | Redmi K90 Ultra | |
|---|---|---|
| Price | USD 80 | USD 420 |
| Battery | 5000 mAh | 8550 mAh |
| Charging (W) | 10 | 100 |
| RAM | 3 GB | 16 GB |
| Storage | 64 GB | 512 GB |
| Chipset | UNISOC T603 | Qualcomm Snapdragon 8 Elite |
| Display | 6.71" • TFT LCD • 90Hz | 6.83" • AMOLED gaming display • 165Hz |
| Main Camera | 8MP | 50MP |
| Front Camera | 5MP | 20MP |
| OS | Android 14 | Android 16 |
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Key Differences
Only the differences that meaningfully separate these phones.
Price
USD 340 cheaper
Redmi A3xUSD 80
vsRedmi K90 UltraUSD 420
RAM
13 GB more RAM
Redmi K90 Ultra16 GB RAM
vsRedmi A3x3 GB RAM
Storage
8× more storage
Redmi K90 Ultra512 GB
vsRedmi A3x64 GB
Battery
71% larger battery
Redmi K90 Ultra8,550 mAh
vsRedmi A3x5,000 mAh
Charging
90 W faster wired charging
Redmi K90 Ultra100 W wired
vsRedmi A3x10 W wired
Performance
Different chipsets
Redmi A3xUNISOC T603
vsRedmi K90 UltraQualcomm Snapdragon 8 Elite
Display
165 Hz refresh
Redmi K90 Ultra165 Hz
vsRedmi A3x90 Hz
Best For
Where each phone stands out based on this comparison.
Best if you want
Lower priceXiaomi Redmi A3x
Much lower purchase priceUSD 80
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 A3x vs Xiaomi Redmi K90 Ultra
Xiaomi Redmi K90 Ultra offers more RAM, storage, battery capacity and a smoother display than Redmi A3x, with 16 GB of RAM versus 3 GB, 512 GB of storage versus 64 GB, a 8550 mAh battery versus 5000 mAh, and a 165 Hz display instead of 90 Hz. It also adds a higher-resolution rear camera (50 MP versus 8 MP), a higher-resolution front camera (20 MP versus 5 MP), optical image stabilization on the main camera, and 100W charging. Xiaomi Redmi A3x, however, is around $340 cheaper and lighter at 202 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 A3x’s lower price and lighter build.
