AMD Radeon RX 580X Mobile vs AMD Radeon HD 7850M

VS

AMD Radeon RX 580X Mobile AMD Radeon HD 7850M

We compared two Mobile platform GPUs: 8GB VRAM Radeon RX 580X Mobile 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 580X Mobile 's Advantages

Released 6 years late

Boost Clock1077MHz

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (256.0GB/s vs 64.00GB/s)

1664 additional rendering cores

AMD Radeon HD 7850M 's Advantages

Lower TDP (40W vs 100W)

Score

Benchmark

FP32 (float)

Radeon RX 580X Mobile +474%

4.963 TFLOPS

Radeon HD 7850M

0.864 TFLOPS

Radeon RX 580X Mobile

VS

Radeon HD 7850M

Graphics Card

Apr 2018

Release Date

Apr 2012

Mobility Radeon

Generation

London

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x16

Clock Speeds

1000 MHz

Base Clock

-

1077 MHz

Boost Clock

-

2000 MHz

Memory Clock

1000 MHz

Memory

8GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

256.0GB/s

Bandwidth

64.00GB/s

Render Config

-

SM Count

-

36

Compute Units

10

2304

Shading Units

640

144

TMUs

40

32

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

256 KB

Theoretical Performance

34.46 GPixel/s

Pixel Rate

10.80 GPixel/s

155.1 GTexel/s

Texture Rate

27.00 GTexel/s

4.963 TFLOPS

FP16 (half)

-

4.963 TFLOPS

FP32 (float)

864.0 GFLOPS

310.2 GFLOPS

FP64 (double)

54.00 GFLOPS

Graphics Processor

Polaris 20

GPU Name

Heathrow

Polaris 20M XT

GPU Variant

Heathrow PRO

GCN 4.0

Architecture

GCN 1.0

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

5.7 billion

Transistors

1.5 billion

232 mm²

Die Size

123 mm²

Board Design

100W

TDP

40W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

1.2

Vulkan

1.2

-

CUDA

-

6.4

Shader Model

5.1

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