AMD Radeon RX 580X Mobile vs ATI Mobility Radeon HD 3850 X2

VS

AMD Radeon RX 580X Mobile

ATI Mobility Radeon HD 3850 X2

We compared two Mobile platform GPUs: 8GB VRAM Radeon RX 580X Mobile and 512MB VRAM Mobility Radeon HD 3850 X2 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 9 years and 10 months late

Boost Clock1077MHz

More VRAM (8GB vs 512GB)

Larger VRAM bandwidth (256.0GB/s vs 48.00GB/s)

1984 additional rendering cores

ATI Mobility Radeon HD 3850 X2 's Advantages

Lower TDP (70W vs 100W)

Score

Benchmark

FP32 (float)

Radeon RX 580X Mobile +1237%

4.963 TFLOPS

Mobility Radeon HD 3850 X2

0.371 TFLOPS

Radeon RX 580X Mobile

VS

Mobility Radeon HD 3850 X2

Graphics Card

Apr 2018

Release Date

Jun 2008

Mobility Radeon

Generation

M8x

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 2.0 x16

Clock Speeds

1000 MHz

Base Clock

-

1077 MHz

Boost Clock

-

2000 MHz

Memory Clock

750 MHz

Memory

8GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

256bit

256.0GB/s

Bandwidth

48.00GB/s

Render Config

36

Compute Units

4

-

2304

Shading Units

320

144

TMUs

16

32

ROPs

16

-

16 KB (per CU)

L1 Cache

-

2 MB

L2 Cache

256 KB

-

Theoretical Performance

34.46 GPixel/s

Pixel Rate

9.280 GPixel/s

155.1 GTexel/s

Texture Rate

9.280 GTexel/s

4.963 TFLOPS

FP16 (half)

-

4.963 TFLOPS

FP32 (float)

371.2 GFLOPS

310.2 GFLOPS

FP64 (double)

74.24 GFLOPS

Board Design

100W

TDP

70W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Polaris 20

GPU Name

M88

Polaris 20M XT

GPU Variant

-

GCN 4.0

Architecture

TeraScale

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

55 nm

5.7 billion

Transistors

0.666 billion

232 mm²

Die Size

192 mm²

Graphics Features

12 (12_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

2.1

OpenCL

N/A

1.2

Vulkan

N/A

-

6.4

Shader Model

4.1

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