AMD Radeon HD 6950M vs AMD Radeon R5 A255

VS

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6950M 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 6950M 's Advantages

Larger VRAM bandwidth (115.2GB/s vs 64.00GB/s)

576 additional rendering cores

AMD Radeon R5 A255 's Advantages

Released 3 years late

Boost Clock940MHz

Score

Benchmark

FP32 (float)

Radeon HD 6950M +54%

1.114 TFLOPS

Radeon R5 A255

0.721 TFLOPS

Radeon HD 6950M

VS

Radeon R5 A255

Graphics Card

Jan 2011

Release Date

Jan 2014

Vancouver

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

900 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

115.2GB/s

Bandwidth

64.00GB/s

Render Config

-

SM Count

-

12

Compute Units

6

960

Shading Units

384

48

TMUs

24

32

ROPs

8

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

Theoretical Performance

18.56 GPixel/s

Pixel Rate

7.520 GPixel/s

27.84 GTexel/s

Texture Rate

22.56 GTexel/s

-

FP16 (half)

-

1114 GFLOPS

FP32 (float)

721.9 GFLOPS

-

FP64 (double)

-

Graphics Processor

Blackcomb

GPU Name

Topaz

Blackcomb PRO

GPU Variant

Topaz PRO (216-0858030)

TeraScale 2

Architecture

GCN 3.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.7 billion

Transistors

1.55 billion

212 mm²

Die Size

125 mm²

Board Design

50W

TDP

Unknown

-

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

-

Power Connectors

-

Graphics Features

11.2 (11_0)

DirectX

12 (12_0)

4.4

OpenGL

4.6

1.2

OpenCL

2.1

N/A

Vulkan

1.2.170

-

CUDA

-

5.0

Shader Model

6.5

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