Xiaomi Redmi K90 Ultra vs Oppo A6

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Xiaomi Redmi K90 Ultra

Xiaomi Redmi K90 Ultra

$420

16 GB RAM 512 GB

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Oppo A6

Oppo A6

$315

8 GB RAM 128 GB

Redmi K90 UltraA6
PriceUSD 420USD 315
Battery8550 mAh7000 mAh
Charging (W)10045
RAM16 GB8 GB
Storage512 GB128 GB
ChipsetQualcomm Snapdragon 8 EliteQualcomm Snapdragon 685
Display6.83" • AMOLED gaming display • 165Hz6.75" • IPS LCD • 120Hz
Main Camera50MP50MP
Front Camera20MP8MP
OSAndroid 16Android 15

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Key Differences

Only the differences that meaningfully separate these phones.

Price
USD 105 cheaper
vsRedmi K90 UltraUSD 420
RAM
2× more RAM
vsA68 GB RAM
Storage
4× more storage
vsA6128 GB
Battery
22% larger battery
vsA67,000 mAh
Charging
55 W faster wired charging
vsA645 W wired
Performance
Different chipsets
vsA6Qualcomm Snapdragon 685
Display
165 Hz refresh
vsA6120 Hz

Best For

Where each phone stands out based on this comparison.

Best if you want

Xiaomi Redmi K90 Ultra

More hardware
More RAM and storage16 GB RAM · 512 GB
Larger battery8,550 mAh
Faster wired charging100 W wired
Up to 165 Hz display6.83-inch
Best if you want

Oppo A6

Lower price
Much lower purchase priceUSD 315

What CompareTab says about Xiaomi Redmi K90 Ultra vs Oppo A6

Xiaomi Redmi K90 Ultra offers more RAM, storage, battery capacity and a smoother display than A6, with 16 GB of RAM versus 8 GB, 512 GB of storage versus 128 GB, a 8550 mAh battery versus 7000 mAh, and a 165 Hz display instead of 120 Hz. It also adds a higher-resolution front camera (20 MP versus 8 MP), optical image stabilization on the main camera, an ultrawide rear camera, and 100W charging. Oppo A6, however, is around $105 cheaper and lighter at 215 g versus 227 g. The main trade-off is the Redmi K90 Ultra’s extra RAM, storage, faster charging, battery capacity, and smoother display versus the A6’s lower price and lighter build.