AMD Radeon HD 6670A vs AMD Radeon R5 A255

VS

AMD Radeon HD 6670A

AMD Radeon R5 A255

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6670A 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 6670A 's Advantages

96 additional rendering cores

AMD Radeon R5 A255 's Advantages

Released 2 years and 9 months late

Boost Clock940MHz

Score

Benchmark

FP32 (float)

Radeon HD 6670A

0.576 TFLOPS

Radeon R5 A255 +25%

0.721 TFLOPS

Radeon HD 6670A

VS

Radeon R5 A255

Graphics Card

Apr 2011

Release Date

Jan 2014

All-In-One

Generation

All-In-One

Mobile

Type

Mobile

MXM-A (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

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

64.00GB/s

Bandwidth

64.00GB/s

Render Config

6

Compute Units

6

-

480

Shading Units

384

24

TMUs

24

8

ROPs

8

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

4.800 GPixel/s

Pixel Rate

7.520 GPixel/s

14.40 GTexel/s

Texture Rate

22.56 GTexel/s

-

576.0 GFLOPS

FP32 (float)

721.9 GFLOPS

-

Board Design

45W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

-

Graphics Processor

Turks

GPU Name

Topaz

Turks XT (215-0803000)

GPU Variant

Topaz PRO (216-0858030)

TeraScale 2

Architecture

GCN 3.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.716 billion

Transistors

1.55 billion

118 mm²

Die Size

125 mm²

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

-

5.0

Shader Model

6.5

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