AMD Radeon R5 A255 vs AMD Radeon HD 8970M

VS

We compared two Mobile platform GPUs: 1024MB VRAM Radeon R5 A255 and 4GB VRAM Radeon HD 8970M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R5 A255 's Advantages

Released 8 months late

Boost Clock has increased by 4% (940MHz vs 900MHz)

AMD Radeon HD 8970M 's Advantages

More VRAM (4GB vs 1GB)

Larger VRAM bandwidth (153.6GB/s vs 64.00GB/s)

896 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R5 A255

0.721 TFLOPS

Radeon HD 8970M +219%

2.304 TFLOPS

Radeon R5 A255

VS

Radeon HD 8970M

Graphics Card

Jan 2014

Release Date

May 2013

All-In-One

Generation

Solar System

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

925 MHz

Base Clock

850 MHz

940 MHz

Boost Clock

900 MHz

1000 MHz

Memory Clock

1200 MHz

Memory

1024MB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

64.00GB/s

Bandwidth

153.6GB/s

Render Config

-

SM Count

-

6

Compute Units

20

384

Shading Units

1280

24

TMUs

80

8

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

512 KB

Theoretical Performance

7.520 GPixel/s

Pixel Rate

28.80 GPixel/s

22.56 GTexel/s

Texture Rate

72.00 GTexel/s

-

FP16 (half)

-

721.9 GFLOPS

FP32 (float)

2.304 TFLOPS

-

FP64 (double)

144.0 GFLOPS

Graphics Processor

Topaz

GPU Name

Neptune

Topaz PRO (216-0858030)

GPU Variant

Neptune XT (216-0847000)

GCN 3.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.55 billion

Transistors

2.8 billion

125 mm²

Die Size

212 mm²

Board Design

Unknown

TDP

100W

-

Suggested PSU

-

Portable Device Dependent

Outputs

No outputs

-

Power Connectors

-

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

1.2

1.2.170

Vulkan

1.2

-

CUDA

-

6.5

Shader Model

5.1

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