AMD Radeon Pro 555 vs ATI Mobility Radeon HD 3870

VS

AMD Radeon Pro 555

ATI Mobility Radeon HD 3870

We compared two Mobile platform GPUs: 2GB VRAM Radeon Pro 555 and 512MB VRAM Mobility Radeon HD 3870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon Pro 555 's Advantages

Released 9 years late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (81.60GB/s vs 54.40GB/s)

448 additional rendering cores

ATI Mobility Radeon HD 3870 's Advantages

Lower TDP (55W vs 75W)

Score

Benchmark

FP32 (float)

Radeon Pro 555 +209%

1.306 TFLOPS

Mobility Radeon HD 3870

0.422 TFLOPS

Radeon Pro 555

VS

Mobility Radeon HD 3870

Graphics Card

Jun 2017

Release Date

Jun 2008

Radeon Pro Mac

Generation

M8x

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1275 MHz

Memory Clock

850 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

256bit

81.60GB/s

Bandwidth

54.40GB/s

Render Config

12

Compute Units

4

-

768

Shading Units

320

48

TMUs

16

ROPs

16

-

16 KB (per CU)

L1 Cache

-

1024 KB

L2 Cache

256 KB

-

Theoretical Performance

13.60 GPixel/s

Pixel Rate

10.56 GPixel/s

40.80 GTexel/s

Texture Rate

10.56 GTexel/s

1306 GFLOPS

FP16 (half)

-

1306 GFLOPS

FP32 (float)

422.4 GFLOPS

81.60 GFLOPS

FP64 (double)

84.48 GFLOPS

Board Design

75W

TDP

55W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Polaris 21

GPU Name

M88

Polaris 21 PRO

GPU Variant

-

GCN 4.0

Architecture

TeraScale

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

55 nm

3 billion

Transistors

0.666 billion

123 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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