Galaxy Mega 5.8 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 56/100 SpecEagle score, leading on Display, Performance, Camera, Battery, Build, Value. The Galaxy Mega 5.8 counters on Software.
SpecEagle subscores
64
Display
94
50
Performance
95
60
Camera
96
70
Battery
89
64
Software
0
0
Build
92
0
Value
79
Category wins: Galaxy Mega 5.8 1 · 6 Xiaomi 15 Ultra
Benchmarks
Test
A · Samsung
B · Xiaomi
N/A
13,000
—
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
qHD TFT
LTPO AMOLED, 120 Hz, Dolby Vision
Size
5.8"
6.73 inches
Resolution
960 x 540
3,200 × 1,440 px (522 ppi)
Peak brightness
—
3,200 nits
Protection
—
Xiaomi Shield Glass
A · Samsung
B · Xiaomi
Main
8 MP
50 MP, f/1.63, 1-inch Sony LYT-900, OIS
Front
1.9 MP
—
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
Selfie
—
32 MP, f/2.0
Video
—
8K @ 30 fps · Leica profiles
A · Samsung
B · Xiaomi
Chipset
Custom 1.4 GHz
Snapdragon 8 Elite (3 nm)
RAM
1.5 GB
12 GB / 16 GB LPDDR5X
Storage
8 GB + microSD
256 GB / 512 GB / 1 TB UFS 4.0
CPU
—
8 cores
GPU
—
Adreno 830
A · Samsung
B · Xiaomi
Capacity
2,600 mAh (removable)
5,410 mAh
Wired
—
90 W HyperCharge
Wireless
—
80 W
A · Samsung
B · Xiaomi
Body
Plastic
—
Weight
182 g
—
A · Samsung
B · Xiaomi
Launch OS
Android 4.2.2
—
A · Samsung
B · Xiaomi
5.8" budget phablet
Yes
—
Choose Galaxy Mega 5.8 if…
- Big 5.8" at $330.
- Removable battery + microSD.
- Compact phablet ratio.
- Affordable.
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.