The POCO is cheaper and faster. The Xiaomi is about the cameras.

Short answer

POCO X8 Pro Max - Dimensity 9500s, 8500 mAh, 100 W, a 6.83" screen. Xiaomi 17T - three cameras (50 + 50 + 12 MP), a 32 MP front camera, more compact (6.59", 200 g).

Key differences

SpecPOCO X8 Pro MaxXiaomi 17T
ChipMediaTek Dimensity 9500sMediaTek Dimensity 8500-Ultra
Display6.83", AMOLED, 1280×2772, 120 Hz6.59", AMOLED, 1268×2756, 120 Hz
RAM / storage12/256 GB, 12/512 GB12/256 GB, 12/512 GB
Rear cameras50 MP + 8 MP50 MP + 50 MP + 12 MP
Front20 MP32 MP
Battery8500 mAh6500 mAh
Charging100 W67 W
ProtectionIP68IP68
Thickness / weight8.2 mm / 218 g8.17 mm / 200 g
Pricecurrent pricescurrent prices

Specs come from the device pages on Smartphone.ua.

Chips

MediaTek Dimensity 9500s and MediaTek Dimensity 8500-Ultra. The Dimensity 9500s is flagship-class.

Battery

8500 mAh and 100 W on the POCO vs 6500 mAh and 67 W on the Xiaomi.

Cameras

50 + 50 + 12 MP on the Xiaomi; the POCO has 50 + 8 MP.

Verdict: who should buy which

  • Speed, battery, price - POCO X8 Pro Max.
  • Cameras and compactness - Xiaomi 17T.

FAQ

Are both protected?
Yes, IP68.

How much does the POCO weigh?
218 g.

Which is cheaper?
The POCO X8 Pro Max.

Read also