AMD Radeon HD 7950M vs AMD Radeon R5 A255

VS

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 7950M and 1024MB VRAM Radeon R5 A255 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7950M 's Advantages

More VRAM (2GB vs 1GB)

Larger VRAM bandwidth (128.0GB/s vs 64.00GB/s)

896 additional rendering cores

AMD Radeon R5 A255 's Advantages

Released 1 years and 9 months late

Boost Clock940MHz

Score

Benchmark

FP32 (float)

Radeon HD 7950M +148%

1.792 TFLOPS

Radeon R5 A255

0.721 TFLOPS

Radeon HD 7950M

VS

Radeon R5 A255

Graphics Card

Apr 2012

Release Date

Jan 2014

London

Generation

All-In-One

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

925 MHz

-

Boost Clock

940 MHz

1000 MHz

Memory Clock

1000 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

128.0GB/s

Bandwidth

64.00GB/s

Render Config

-

SM Count

-

20

Compute Units

6

1280

Shading Units

384

80

TMUs

24

32

ROPs

8

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

Theoretical Performance

22.40 GPixel/s

Pixel Rate

7.520 GPixel/s

56.00 GTexel/s

Texture Rate

22.56 GTexel/s

-

FP16 (half)

-

1.792 TFLOPS

FP32 (float)

721.9 GFLOPS

-

FP64 (double)

-

Graphics Processor

Wimbledon

GPU Name

Topaz

Wimbledon PRO

GPU Variant

Topaz PRO (216-0858030)

GCN 1.0

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.8 billion

Transistors

1.55 billion

212 mm²

Die Size

125 mm²

Board Design

75W

TDP

Unknown

-

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

-

Power Connectors

-

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.1

1.2

Vulkan

1.2.170

-

CUDA

-

5.1

Shader Model

6.5

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