ROG Phone 8 vs X100 Ultra

Phone 1

Phone 2

Winner

Vivo X100 Ultra

The X100 Ultra wins this one, taking display and camera decisively. Against the ROG Phone 8 it's also the sounder buy at $20.39 per month of safe use.

Value Score: ROG Phone 8 60 · X100 Ultra 66 — methodology

The lifespan decider

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

Asus ROG Phone 8 $850

Buy with care$27.39/mo

2024◆ Buy-by Jan 20272029

Vivo X100 Ultra $720

Buy with care$20.39/mo

2024◆ Buy-by May 20272029

Category by category

Display

ROG Phone 8 80X100 Ultra 90

The X100 Ultra's screen is the better one — 6.78-inch ltpo amoled, 120hz, 3000 nits peak.

Performance

ROG Phone 8 92X100 Ultra 92

Performance is a wash — same chip tier.

Camera

ROG Phone 8 79X100 Ultra 84

The X100 Ultra has the stronger camera system — same lens count, higher-grade sensors.

Battery

ROG Phone 8 90X100 Ultra 90

Battery capacities are close enough not to decide this.

Software longevity

ROG Phone 8 37X100 Ultra 42

The X100 Ultra is supported until May 2029 — 4 months longer than the ROG Phone 8.

Value

ROG Phone 8 60X100 Ultra 66

Overall value goes to the X100 Ultra at $20.39 per month of safe use.

Full spec table

Spec	ROG Phone 8	X100 Ultra
Price (street)	$850	$720
Display	6.78-inch LTPO AMOLED, 1080x2400, 165Hz	6.78-inch LTPO AMOLED, 120Hz, 3000 nits peak
Chipset	Qualcomm Snapdragon 8 Gen 3	Snapdragon 8 Gen 3
RAM	12GB/16GB	12GB/16GB
Storage	256GB/512GB	256GB/512GB/1TB
Battery	5,500 mAh	5,500 mAh
Charging	65W wired, 15W wireless	80W wired, 30W wireless
Rear cameras	50MP main, 13MP ultra-wide, 32MP telephoto 3x	50MP main, 200MP periscope telephoto, 50MP ultra-wide
Dimensions	163.8 × 76.8 × 8.9 mm	164.1 x 75.6 x 9.2 mm
Weight	225 g	229 g
Water resistance	IP68	IP68/IP69
Supported until	Jan 2029	May 2029

ROG Phone 8 full verdict →X100 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.