AMD Radeon RX 6600M vs NVIDIA GeForce 8400M GS

VS

AMD Radeon RX 6600M NVIDIA GeForce 8400M GS

We compared two Mobile platform GPUs: 8GB VRAM Radeon RX 6600M and 256MB VRAM GeForce 8400M GS to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6600M 's Advantages

Released 14 years late

Boost Clock2416MHz

Larger VRAM bandwidth (224.0GB/s vs 6.400GB/s)

1776 additional rendering cores

NVIDIA GeForce 8400M GS 's Advantages

Lower TDP (11W vs 100W)

Score

Benchmark

FP32 (float)

Radeon RX 6600M +33203%

8.659 TFLOPS

GeForce 8400M GS

0.026 TFLOPS

Radeon RX 6600M

VS

GeForce 8400M GS

Graphics Card

May 2021

Release Date

May 2007

Mobility Radeon

Generation

GeForce 8M

Mobile

Type

Mobile

PCIe 4.0 x8

Bus Interface

MXM-I

Clock Speeds

2068 MHz

Base Clock

-

2416 MHz

Boost Clock

-

1750 MHz

Memory Clock

400 MHz

Memory

8GB

Memory Size

256MB

GDDR6

Memory Type

DDR2

128bit

Memory Bus

64bit

224.0GB/s

Bandwidth

6.400GB/s

Render Config

-

SM Count

2

28

Compute Units

-

1792

Shading Units

16

112

TMUs

8

64

ROPs

4

-

Tensor Cores

-

28

RT Cores

-

128 KB per Array

L1 Cache

-

2 MB

L2 Cache

16 KB

Theoretical Performance

154.6 GPixel/s

Pixel Rate

1.600 GPixel/s

270.6 GTexel/s

Texture Rate

3.200 GTexel/s

17.32 TFLOPS

FP16 (half)

-

8.659 TFLOPS

FP32 (float)

25.60 GFLOPS

541.2 GFLOPS

FP64 (double)

-

Graphics Processor

Navi 23

GPU Name

G86

-

GPU Variant

NB8M-GS

RDNA 2.0

Architecture

Tesla

TSMC

Foundry

TSMC

7 nm

Process Size

80 nm

11.06 billion

Transistors

0.21 billion

237 mm²

Die Size

127 mm²

Board Design

100W

TDP

11W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Features

12 Ultimate (12_2)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

2.1

OpenCL

1.1

1.3

Vulkan

N/A

-

CUDA

1.1

6.5

Shader Model

4.0

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