AMD Radeon R9 M485X vs AMD Radeon RX 7800M

VS

AMD Radeon R9 M485X

AMD Radeon RX 7800M

We compared two Mobile platform GPUs: 8GB VRAM Radeon R9 M485X 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 7800M 's Advantages

Released 8 years and 4 months late

Boost Clock2145MHz

More VRAM (12GB vs 8GB)

Larger VRAM bandwidth (432GB/s vs 160.0GB/s)

1792 additional rendering cores

Lower TDP (180W vs 250W)

Score

Benchmark

FP32 (float)

Radeon R9 M485X

2.961 TFLOPS

Radeon RX 7800M +1111%

35.87 TFLOPS

Radeon R9 M485X

VS

Radeon RX 7800M

Graphics Card

May 2016

Release Date

Sep 2024

Crystal System

Generation

Navi Mobile

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1825 MHz

-

Boost Clock

2145 MHz

1250 MHz

Memory Clock

2250 MHz

Memory

8GB

Memory Size

12GB

GDDR5

Memory Type

GDDR6

256bit

Memory Bus

192bit

160.0GB/s

Bandwidth

432GB/s

Render Config

32

Compute Units

60

-

2048

Shading Units

3840

128

TMUs

240

32

ROPs

96

-

RT Cores

60

16 KB (per CU)

L1 Cache

256 KB per Array

512 KB

L2 Cache

6 MB

-

L3 Cache

48 MB

Theoretical Performance

23.14 GPixel/s

Pixel Rate

401.3 GPixel/s

92.54 GTexel/s

Texture Rate

560.4 GTexel/s

2.961 TFLOPS

FP16 (half)

71.73 TFLOPS

2.961 TFLOPS

FP32 (float)

35.87 TFLOPS

185.1 GFLOPS

FP64 (double)

1121 GFLOPS

Board Design

250W

TDP

180W

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

None

Graphics Processor

Amethyst

GPU Name

Navi 32

Amethyst XT

GPU Variant

Navi 32

GCN 3.0

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

5 nm

5 billion

Transistors

28.1 billion

366 mm²

Die Size

529 mm²

Graphics Features

12 (12_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.0

OpenCL

2.2

1.2

Vulkan

1.3

-

6.3

Shader Model

6.7

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