AMD Radeon R5 A255 vs AMD Radeon Pro 455

VS

AMD Radeon R5 A255

AMD Radeon Pro 455

We compared two Mobile platform GPUs: 1024MB VRAM Radeon R5 A255 and 2GB VRAM Radeon Pro 455 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R5 A255 's Advantages

Boost Clock940MHz

AMD Radeon Pro 455 's Advantages

Released 2 years and 9 months late

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (81.28GB/s vs 64.00GB/s)

384 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R5 A255

0.721 TFLOPS

Radeon Pro 455 +82%

1.313 TFLOPS

Radeon R5 A255

VS

Radeon Pro 455

Graphics Card

Jan 2014

Release Date

Oct 2016

All-In-One

Generation

Radeon Pro Mac

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x8

Clock Speeds

925 MHz

Base Clock

-

940 MHz

Boost Clock

-

1000 MHz

Memory Clock

1270 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

64.00GB/s

Bandwidth

81.28GB/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)

256 KB

L2 Cache

1024 KB

-

Theoretical Performance

7.520 GPixel/s

Pixel Rate

13.68 GPixel/s

22.56 GTexel/s

Texture Rate

41.04 GTexel/s

-

FP16 (half)

1313 GFLOPS

721.9 GFLOPS

FP32 (float)

1313 GFLOPS

-

FP64 (double)

82.08 GFLOPS

Board Design

Unknown

TDP

35W

-

Portable Device Dependent

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Topaz

GPU Name

Baffin

Topaz PRO (216-0858030)

GPU Variant

Baffin PRO

GCN 3.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

1.55 billion

Transistors

3 billion

125 mm²

Die Size

123 mm²

Graphics Features

12 (12_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1

OpenCL

2.1

1.2.170

Vulkan

1.2

-

6.5

Shader Model

6.4

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