AMD Radeon RX 7900M vs AMD Radeon RX 7800M

VS

AMD Radeon RX 7900M

AMD Radeon RX 7800M

We compared two Mobile platform GPUs: 16GB VRAM Radeon RX 7900M and 12GB VRAM Radeon RX 7800M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7900M 's Advantages

More VRAM (16GB vs 12GB)

Larger VRAM bandwidth (576.0GB/s vs 432GB/s)

768 additional rendering cores

AMD Radeon RX 7800M 's Advantages

Released 11 months late

Boost Clock has increased by 3% (2145MHz vs 2090MHz)

Score

Benchmark

FP32 (float)

Radeon RX 7900M +7%

38.52 TFLOPS

Radeon RX 7800M

35.87 TFLOPS

Radeon RX 7900M

VS

Radeon RX 7800M

Graphics Card

Oct 2023

Release Date

Sep 2024

Navi Mobile

Generation

Navi Mobile

Mobile

Type

Mobile

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

1825 MHz

Base Clock

1825 MHz

2090 MHz

Boost Clock

2145 MHz

2250 MHz

Memory Clock

2250 MHz

Memory

16GB

Memory Size

12GB

GDDR6

Memory Type

GDDR6

256bit

Memory Bus

192bit

576.0GB/s

Bandwidth

432GB/s

Render Config

72

Compute Units

60

-

4608

Shading Units

3840

288

TMUs

240

192

ROPs

96

-

72

RT Cores

60

256 KB per Array

L1 Cache

256 KB per Array

6 MB

L2 Cache

6 MB

64 MB

L3 Cache

48 MB

Theoretical Performance

401.3 GPixel/s

Pixel Rate

401.3 GPixel/s

601.9 GTexel/s

Texture Rate

560.4 GTexel/s

77.05 TFLOPS

FP16 (half)

71.73 TFLOPS

38.52 TFLOPS

FP32 (float)

35.87 TFLOPS

1204 GFLOPS

FP64 (double)

1121 GFLOPS

Board Design

180W

TDP

180W

-

Portable Device Dependent

Outputs

Portable Device Dependent

None

Power Connectors

None

Graphics Processor

Navi 31

GPU Name

Navi 32

Navi 31

GPU Variant

Navi 32

RDNA 3.0

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

5 nm

Process Size

5 nm

57.7 billion

Transistors

28.1 billion

529 mm²

Die Size

529 mm²

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

-

6.7

Shader Model

6.7

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