Galaxy Mega 6.3 vs Xiaomi 15 Ultra
Side-by-side specs, benchmarks and the SpecEagle AI verdict.
vs
AI Verdict
The Xiaomi 15 Ultra takes the overall edge with a 89/100 to 50/100 SpecEagle score, leading on Display, Camera, Performance, Battery, Build, Value. The Galaxy Mega 6.3 counters on value.
SpecEagle subscores
60
Display
94
56
Camera
96
48
Performance
95
70
Battery
89
54
Build
92
0
Value
79
Category wins: Galaxy Mega 6.3 0 · 6 Xiaomi 15 Ultra
Benchmarks
Test
A · Samsung
B · Xiaomi
AnTuTu v4
14,000
—
AnTuTu v10
—
2,660,000
Geekbench 6 Single
—
3,090
Geekbench 6 Multi
—
10,000
3DMark Solar Bay
—
80.0
Full specifications
A · Samsung
B · Xiaomi
Type
TFT LCD
LTPO AMOLED, 120 Hz, Dolby Vision
Size
6.3 inches
6.73 inches
Resolution
720 x 1280 px
3,200 × 1,440 px (522 ppi)
Peak brightness
—
3,200 nits
Protection
—
Xiaomi Shield Glass
A · Samsung
B · Xiaomi
Main
8 MP, f/2.6
50 MP, f/1.63, 1-inch Sony LYT-900, OIS
Selfie
1.9 MP
32 MP, f/2.0
Ultrawide
—
50 MP, f/2.2, 115° FoV
Telephoto
—
50 MP, f/1.8, 3× optical
Periscope
—
200 MP, f/2.6, 4.3× optical, Samsung HP9
Video
—
8K @ 30 fps · Leica profiles
A · Samsung
B · Xiaomi
Chipset
Exynos 5 dual-core 1.7 GHz
Snapdragon 8 Elite (3 nm)
GPU
PowerVR SGX544
Adreno 830
CPU
—
8 cores
RAM
—
12 GB / 16 GB LPDDR5X
Storage
—
256 GB / 512 GB / 1 TB UFS 4.0
A · Samsung
B · Xiaomi
Capacity
3200 mAh removable
5,410 mAh
Wired
—
90 W HyperCharge
Wireless
—
80 W
Choose Galaxy Mega 6.3 if…
- Huge 6.3" screen before big phones were normal
- Big 3200 mAh removable battery
- microSD expansion
Choose Xiaomi 15 Ultra if…
- One of the best phone camera systems ever — especially the 200 MP periscope.
- 1-inch main sensor delivers genuinely DSLR-like depth.
- 90 W wired + 80 W wireless charging.
- Bright, high-resolution Dolby Vision display.