ManualUser Guide
Mobile processor comparison

MediaTek Dimensity 8400 vs MediaTek Helio G99

Compare available catalogue specifications. The page highlights factual differences without declaring an overall winner.

Swap sides New comparison
Compared fields 39
Different values 34
Quick factual highlights
MediaTek Dimensity 8400
  • Higher maximum CPU clock
  • Smaller manufacturing process
  • Higher listed GPU clock
MediaTek Helio G99 No safely comparable numerical advantage detected.
Side-by-side specifications

Detailed comparison

CPU

SpecificationMediaTek Dimensity 8400MediaTek Helio G99
Architecture 1x 3.25 GHz - Cortex-A7253x 3 GHz - Cortex-A7254x 2.1 GHz - Cortex-A725 2x 2.2 GHz - Cortex-A766x 2 GHz - Cortex-A55
CPU cores 8 8
Clock speed 3250 MHz 2200 MHz
Instruction set ARMv9-A ARMv8.2-A
Process technology 4 nanometers 6 nanometers

Cache and memory

SpecificationMediaTek Dimensity 8400MediaTek Helio G99
L2 cache 1 MB Not available
L3 cache 6 MB Not available
Memory type LPDDR5X LPDDR4X
Memory frequency 4266 MHz 4266 MHz
Memory bus 4x 16 Bit 2x 16 Bit
Maximum bandwidth 68.2 Gbit/s 17.1 Gbit/s
Maximum memory 24 GB 10 GB

Graphics and AI

SpecificationMediaTek Dimensity 8400MediaTek Helio G99
GPU Mali-G720 MP7 Mali-G57 MC2
GPU architecture Valhall 5th gen Valhall
GPU clock 1300 MHz 1000 MHz
Execution units Not available 2
Shaders 896 32
FLOPS 2329.6 Gigaflops Not available
Vulkan 1.3 1.1
OpenCL 3.2 2.0
DirectX 12 12
Neural processor / NPU MediaTek NPU 880 Yes

Display and media

SpecificationMediaTek Dimensity 8400MediaTek Helio G99
Maximum display resolution Not available 2520 x 1080
Maximum camera resolution 1x 320MP, 3x 32MP 1x 108MP, 2x 16MP
Video capture 4K at 60FPS 2K at 30FPS
Video playback 4K at 60FPS 2K at 30FPS
Video codecs - H.264 - H.265 - AV1 - VP9 H.264, H.265, VP9
Audio codecs - AAC LC - FLAC - HE-AACv1 - HE-AACv2 - MP3 AAC, AIFF, CAF, MP3, MP4, WAV

Connectivity

SpecificationMediaTek Dimensity 8400MediaTek Helio G99
4G Not available LTE Cat. 13
5G Yes No
Download speed Up to 5170 Mbps Not available
Wi-Fi 6 5
Bluetooth 6.0 5.2
Navigation GPS, GLONASS, Beidou, Galileo, QZSS, NAVIC GPS, GLONASS, Beidou, Galileo, QZSS, NAVIC

General

SpecificationMediaTek Dimensity 8400MediaTek Helio G99
Release December 2024 May 2022
Class Mid range Mid range
Model number MT6899, MT6899Z Not available
Storage support UFS 4.0 UFS 2.2
Devices in database Not available 10
Real devices

Phones using these processors

Examples found in the existing device catalogue.

MediaTek Dimensity 8400

5G
Realme GT 7T
Realme

Realme GT 7T

3.6
Smartphone
Display
AMOLED, 120 Hz, 1280 × 2800 pixels (6.80 inch…
RAM
12 GB, 8 GB
Storage
256 GB, 512 GB
Battery
Si-Car 7000 mAh
View details
5G
Realme Neo7 SE
Realme

Realme Neo7 SE

3.6
Smartphone
Display
LTPO AMOLED 1.07G colors, 120 Hz (6.78 inches)
RAM
12 GB, 16 GB, 8 GB
Storage
256 GB, 512 GB
Battery
Li-Po 7000 mAh
View details
5G
Redmi Turbo 4
Redmi

Redmi Turbo 4

3.6
Smartphone
Display
OLED 68.7G colors, 120 Hz, 1220 × 2712 pixels…
RAM
12 GB, 16 GB
Storage
256 GB, 512 GB
Battery
Li-Po 6550 mAh
View details

MediaTek Helio G99

4G
Oppo Pad Neo
Oppo

Oppo Pad Neo

3.0
Tablet
Display
LTPS TFT 1.07G colors, 90 Hz, 1720 × 2408 pix…
RAM
8 GB
Storage
128 GB
Battery
Li-Ion 8000 mAh
View details
4G
Oppo Pad Air2
Oppo

Oppo Pad Air2

3.0
Tablet
Display
LTPS TFT 1.07G colors, 90 Hz, 1720 × 2408 pix…
RAM
8 GB
Storage
256 GB
Battery
Li-Ion 8000 mAh
View details
4G
Oppo Reno8 T 4G
Oppo

Oppo Reno8 T 4G

3.0
Smartphone
Display
AMOLED, 90 Hz, 1080 × 2400 pixels (6.43 inche…
RAM
8 GB
Storage
128 GB, 256 GB
Battery
Li-Ion 5000 mAh
View details
4G
Vivo V25e
Vivo

Vivo V25e

2.9
Smartphone
Display
AMOLED 16M colors 1080 × 2404 pixels (6.44 in…
RAM
8 GB
Storage
256 GB
Battery
Li-Ion 4500 mAh
View details
4G
Motorola Moto G72 Dual SIM
Motorola

Motorola Moto G72 Dual SIM

3.6
Smartphone
Display
POLED, 120 Hz, 1080 × 2460 pixels (6.55 inche…
RAM
6 GB
Storage
128 GB
Battery
Li-Ion 5000 mAh
View details
Lenovo Tab Plus 11.5 2024
Lenovo

Lenovo Tab Plus 11.5 2024

3.3
Tablet
Display
IPS TFT 16.7M colors, 90 Hz, 1200 × 2000 pixe…
RAM
8 GB
Storage
128 GB, 256 GB
Battery
Li-Po 8600 mAh
View details
4G
Lenovo Erazer K30 Pad 12.6
Lenovo

Lenovo Erazer K30 Pad 12.6

3.2
Tablet
Display
IPS TFT 16.7M colors 1600 × 2560 pixels (12.6…
RAM
6 GB, 8 GB, 12 GB
Storage
128 GB, 256 GB, 512 GB
Battery
Li-Ion 12000 mAh
View details
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