AMD Radeon RX 7900M vs AMD Radeon RX 6800M

VS

AMD Radeon RX 7900M

AMD Radeon RX 6800M

We compared two Mobile platform GPUs: 16GB VRAM Radeon RX 7900M and 12GB VRAM Radeon RX 6800M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7900M 's Advantages

Released 2 years and 5 months late

More VRAM (16GB vs 12GB)

Larger VRAM bandwidth (576.0GB/s vs 384.0GB/s)

2048 additional rendering cores

AMD Radeon RX 6800M 's Advantages

Boost Clock has increased by 14% (2390MHz vs 2090MHz)

Lower TDP (145W vs 180W)

Score

Benchmark

FP32 (float)

Radeon RX 7900M +214%

38.52 TFLOPS

Radeon RX 6800M

12.24 TFLOPS

Blender

Radeon RX 7900M +64%

2583

Radeon RX 6800M

1568

Radeon RX 7900M

VS

Radeon RX 6800M

Graphics Card

Oct 2023

Release Date

May 2021

Navi Mobile

Generation

Mobility Radeon

Mobile

Type

Mobile

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

1825 MHz

Base Clock

2116 MHz

2090 MHz

Boost Clock

2390 MHz

2250 MHz

Memory Clock

2000 MHz

Memory

16GB

Memory Size

12GB

GDDR6

Memory Type

GDDR6

256bit

Memory Bus

192bit

576.0GB/s

Bandwidth

384.0GB/s

Render Config

72

Compute Units

40

-

4608

Shading Units

2560

288

TMUs

160

192

ROPs

64

-

72

RT Cores

40

256 KB per Array

L1 Cache

128 KB per Array

6 MB

L2 Cache

3 MB

64 MB

L3 Cache

96 MB

Theoretical Performance

401.3 GPixel/s

Pixel Rate

153.0 GPixel/s

601.9 GTexel/s

Texture Rate

382.4 GTexel/s

77.05 TFLOPS

FP16 (half)

24.47 TFLOPS

38.52 TFLOPS

FP32 (float)

12.24 TFLOPS

1204 GFLOPS

FP64 (double)

764.8 GFLOPS

Board Design

180W

TDP

145W

-

Portable Device Dependent

Outputs

No outputs

None

Power Connectors

None

Graphics Processor

Navi 31

GPU Name

Navi 22

Navi 31

GPU Variant

Navi 22 XTM

RDNA 3.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

5 nm

Process Size

7 nm

57.7 billion

Transistors

17.2 billion

529 mm²

Die Size

335 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.2

OpenCL

2.1

1.3

Vulkan

1.3

-

6.7

Shader Model

6.5

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