Xiaomi Poco X8 Pro 512GB vs Realme P4x 128GB: which one suits you?

The two differ in 12 of the specs we have recorded, and the Realme P4x 128GB is cheaper by SAR 268 (prices checked 12 Nov 2026).

Which one should you choose?

  • More space for photos and apps (512 GB vs 128 GB)
  • More memory for multitasking (12 GB vs 4 GB)
  • Bigger battery for a longer day (8,500 mAh vs 7,000 mAh)
  • Paying less: cheaper by SAR 268

The deciding difference here: storage and memory (RAM) and price.

Compares recorded specs; a missing spec does not mean the feature is absent.

Key differences

  • Storage

    ✓ 512 GB128 GB
  • Memory (RAM)

    ✓ 12 GB4 GB
  • Screen size

    6.77 in6.8 in

Specifications side by side

21 of 21 specs

Scroll the table sideways to see the rest.

Spec
XiaomiSAR 2,613
Xiaomi Poco X8 Pro 512GB specs
realmeSAR 2,345
Realme P4x 128GB specs
Reference priceSAR 2,613SAR 2,345
Storage✓ 512 GB128 GB
Memory (RAM)✓ 12 GB4 GB
ProcessorDimensity 8500Dimensity 7400
Battery capacity✓ 8,500 mAh7,000 mAh
Wired charging✓ 100 W45 W
Years of OS updates4 years—
Main camera50 MP50 MP
5GYesYes

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Similar comparisons

Direct comparison questions

What is the difference in processor between the Xiaomi Poco X8 Pro 512GB and the Realme P4x 128GB?

Xiaomi Poco X8 Pro 512GB: Dimensity 8500; Realme P4x 128GB: Dimensity 7400. This is a spec difference, not a verdict that one is better overall.

What is the difference in storage between the Xiaomi Poco X8 Pro 512GB and the Realme P4x 128GB?

Storage is higher on the Xiaomi Poco X8 Pro 512GB: 512 GB vs 128 GB on the Realme P4x 128GB. If this spec is your priority, the difference favours it.

What is the difference in main camera between the Xiaomi Poco X8 Pro 512GB and the Realme P4x 128GB?

No difference here: main camera is 50 MP on both.

What is the difference in battery capacity between the Xiaomi Poco X8 Pro 512GB and the Realme P4x 128GB?

Battery capacity is higher on the Xiaomi Poco X8 Pro 512GB: 8,500 mAh vs 7,000 mAh on the Realme P4x 128GB. If this spec is your priority, the difference favours it.