AMD Radeon RX 6450M vs AMD Radeon RX 7900M

VS

We compared two Mobile platform GPUs: 4GB VRAM Radeon RX 6450M and 16GB VRAM Radeon RX 7900M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6450M 's Advantages

Boost Clock has increased by 18% (2460MHz vs 2090MHz)

Lower TDP (50W vs 180W)

AMD Radeon RX 7900M 's Advantages

Released 9 months late

More VRAM (16GB vs 4GB)

Larger VRAM bandwidth (576.0GB/s vs 128.0GB/s)

3840 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6450M

3.779 TFLOPS

Radeon RX 7900M +919%

38.52 TFLOPS

Radeon RX 6450M

VS

Radeon RX 7900M

Graphics Card

Jan 2023

Release Date

Oct 2023

Navi Mobile

Generation

Navi Mobile

Mobile

Type

Mobile

PCIe 4.0 x4

Bus Interface

PCIe 4.0 x16

Clock Speeds

2000 MHz

Base Clock

1825 MHz

2460 MHz

Boost Clock

2090 MHz

2000 MHz

Memory Clock

2250 MHz

Memory

4GB

Memory Size

16GB

GDDR6

Memory Type

GDDR6

64bit

Memory Bus

256bit

128.0GB/s

Bandwidth

576.0GB/s

Render Config

-

SM Count

-

12

Compute Units

72

768

Shading Units

4608

48

TMUs

288

32

ROPs

192

-

Tensor Cores

-

12

RT Cores

72

128 KB per Array

L1 Cache

256 KB per Array

1024 KB

L2 Cache

6 MB

Theoretical Performance

78.72 GPixel/s

Pixel Rate

401.3 GPixel/s

118.1 GTexel/s

Texture Rate

601.9 GTexel/s

7.557 TFLOPS

FP16 (half)

77.05 TFLOPS

3.779 TFLOPS

FP32 (float)

38.52 TFLOPS

236.2 GFLOPS

FP64 (double)

1204 GFLOPS

Graphics Processor

Navi 24

GPU Name

Navi 31

Navi 24 XML

GPU Variant

Navi 31

RDNA 2.0

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

6 nm

Process Size

5 nm

5.4 billion

Transistors

57.7 billion

107 mm²

Die Size

529 mm²

Board Design

50W

TDP

180W

-

Suggested PSU

-

Portable Device Dependent

Outputs

Portable Device Dependent

None

Power Connectors

None

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.2

OpenCL

2.2

1.3

Vulkan

1.3

-

CUDA

-

6.7

Shader Model

6.7

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