AMD Radeon HD 8670A vs AMD Radeon Pro 555

VS

AMD Radeon HD 8670A

AMD Radeon Pro 555

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 8670A and 2GB VRAM Radeon Pro 555 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8670A 's Advantages

Lower TDP (45W vs 75W)

AMD Radeon Pro 555 's Advantages

Released 4 years and 4 months late

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (81.60GB/s vs 16.00GB/s)

384 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 8670A

0.461 TFLOPS

Radeon Pro 555 +183%

1.306 TFLOPS

Radeon HD 8670A

VS

Radeon Pro 555

Graphics Card

Feb 2013

Release Date

Jun 2017

All-In-One

Generation

Radeon Pro Mac

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

1000 MHz

Memory Clock

1275 MHz

Memory

1024MB

Memory Size

2GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

128bit

16.00GB/s

Bandwidth

81.60GB/s

Render Config

6

Compute Units

12

-

384

Shading Units

768

24

TMUs

48

8

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

1024 KB

-

Theoretical Performance

4.800 GPixel/s

Pixel Rate

13.60 GPixel/s

14.40 GTexel/s

Texture Rate

40.80 GTexel/s

-

FP16 (half)

1306 GFLOPS

460.8 GFLOPS

FP32 (float)

1306 GFLOPS

28.80 GFLOPS

FP64 (double)

81.60 GFLOPS

Board Design

45W

TDP

75W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Mars

GPU Name

Polaris 21

Mars XT

GPU Variant

Polaris 21 PRO

GCN 1.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

0.95 billion

Transistors

3 billion

77 mm²

Die Size

123 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.1

1.2

Vulkan

1.2

-

5.1

Shader Model

6.4

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