AMD Radeon RX 7800M vs AMD Radeon HD 7850M

VS

AMD Radeon RX 7800M

AMD Radeon HD 7850M

We compared two Mobile platform GPUs: 12GB VRAM Radeon RX 7800M and 2GB VRAM Radeon HD 7850M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7800M 's Advantages

Released 12 years and 5 months late

Boost Clock2145MHz

More VRAM (12GB vs 2GB)

Larger VRAM bandwidth (432GB/s vs 64.00GB/s)

3200 additional rendering cores

AMD Radeon HD 7850M 's Advantages

Lower TDP (40W vs 180W)

Score

Benchmark

FP32 (float)

Radeon RX 7800M +4051%

35.87 TFLOPS

Radeon HD 7850M

0.864 TFLOPS

Radeon RX 7800M

VS

Radeon HD 7850M

Graphics Card

Sep 2024

Release Date

Apr 2012

Navi Mobile

Generation

London

Mobile

Type

Mobile

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1825 MHz

Base Clock

-

2145 MHz

Boost Clock

-

2250 MHz

Memory Clock

1000 MHz

Memory

12GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

192bit

Memory Bus

128bit

432GB/s

Bandwidth

64.00GB/s

Render Config

60

Compute Units

10

-

3840

Shading Units

640

240

TMUs

40

96

ROPs

16

-

60

RT Cores

-

256 KB per Array

L1 Cache

16 KB (per CU)

6 MB

L2 Cache

256 KB

48 MB

L3 Cache

-

Theoretical Performance

401.3 GPixel/s

Pixel Rate

10.80 GPixel/s

560.4 GTexel/s

Texture Rate

27.00 GTexel/s

71.73 TFLOPS

FP16 (half)

-

35.87 TFLOPS

FP32 (float)

864.0 GFLOPS

1121 GFLOPS

FP64 (double)

54.00 GFLOPS

Board Design

180W

TDP

40W

-

Portable Device Dependent

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Navi 32

GPU Name

Heathrow

Navi 32

GPU Variant

Heathrow PRO

RDNA 3.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

5 nm

Process Size

28 nm

28.1 billion

Transistors

1.5 billion

529 mm²

Die Size

123 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.2

OpenCL

1.2

1.3

Vulkan

1.2

-

6.7

Shader Model

5.1

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