Find X8 vs 15 Ultra

Phone 1

Phone 2

Winner

Oppo Find X8

Lifespan decides this one: the Find X8 is supported until Nov 2030 at $15.02 per month of safe use, while the 15 Ultra runs out in Mar 2030 ($30.27/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: Find X8 68 · 15 Ultra 65 — methodology

The lifespan decider

When specs are close, support length decides it — this is what each phone costs per month of safe use.

Oppo Find X8 $800

Safe to buy$15.02/mo

2024◆ Buy-by Nov 20282030

Xiaomi 15 Ultra $1350

Safe to buy$30.27/mo

2025◆ Buy-by Mar 20282030

Category by category

Display

Find X8 8015 Ultra 100

The 15 Ultra's screen is the better one — 6.73-inch 2k (1440×3200) ltpo amoled, 1–120hz, up to 3200 nits peak.

Performance

Find X8 9415 Ultra 98

The 15 Ultra's Qualcomm Snapdragon 8 Elite (3nm) is simply the faster chip.

Camera

Find X8 7915 Ultra 96

The 15 Ultra has the stronger camera system (4 real rear lenses vs 3).

Battery

Find X8 9315 Ultra 88

5,630mAh vs 5,410mAh — the Find X8 lasts longer between charges.

Software longevity

Find X8 6315 Ultra 53

The Find X8 is supported until Nov 2030 — 9 months longer than the 15 Ultra.

Value

Find X8 6815 Ultra 65

Pound for pound, these two are equally good deals.

Full spec table

Spec	Find X8	15 Ultra
Price (street)	$800	$1350
Display	6.59-inch LTPO AMOLED, 2760x1256, 120Hz	6.73-inch 2K (1440×3200) LTPO AMOLED, 1–120Hz, up to 3200 nits peak
Chipset	MediaTek Dimensity 9400	Qualcomm Snapdragon 8 Elite (3nm)
RAM	12GB/16GB	16GB
Storage	256GB/512GB	512GB/1TB
Battery	5,630 mAh	5,410 mAh
Charging	80W wired, 50W wireless	90W wired, 80W wireless
Rear cameras	50MP main, 50MP ultra-wide, 50MP telephoto 3x periscope	50MP main, 50MP ultra-wide, 50MP telephoto (70mm floating), 200MP periscope telephoto
Dimensions	157.4 × 74.3 × 7.9 mm	161.3 × 75.3 × 9.35 mm
Weight	193 g	226 g
Water resistance	IP68/IP69	IP68
Supported until	Nov 2030	Mar 2030

Find X8 full verdict →15 Ultra full verdict →Longevity master board →

Scores and verdicts are computed from our verified database — see exactly how. Specs from manufacturer documentation; prices reflect major US retailers.