AMD Radeon R5 A255 vs ATI Mobility Radeon HD 2600 XT Mac Edition

VS

AMD Radeon R5 A255

ATI Mobility Radeon HD 2600 XT Mac Edition

We compared two Mobile platform GPUs: 1024MB VRAM Radeon R5 A255 and 256MB VRAM Mobility Radeon HD 2600 XT Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R5 A255 's Advantages

Released 6 years and 6 months late

Boost Clock940MHz

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (64.00GB/s vs 21.92GB/s)

264 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R5 A255 +400%

0.721 TFLOPS

Mobility Radeon HD 2600 XT Mac Edition

0.144 TFLOPS

Radeon R5 A255

VS

Mobility Radeon HD 2600 XT Mac Edition

Graphics Card

Jan 2014

Release Date

Jul 2007

All-In-One

Generation

M7x

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

MXM-II

Clock Speeds

925 MHz

Base Clock

-

940 MHz

Boost Clock

-

1000 MHz

Memory Clock

685 MHz

Memory

1024MB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

128bit

64.00GB/s

Bandwidth

21.92GB/s

Render Config

6

Compute Units

3

-

384

Shading Units

120

24

TMUs

8

ROPs

4

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

64 KB

-

Theoretical Performance

7.520 GPixel/s

Pixel Rate

2.400 GPixel/s

22.56 GTexel/s

Texture Rate

4.800 GTexel/s

-

721.9 GFLOPS

FP32 (float)

144.0 GFLOPS

-

Board Design

Unknown

TDP

Unknown

-

Portable Device Dependent

Outputs

Portable Device Dependent

-

Graphics Processor

Topaz

GPU Name

M76

Topaz PRO (216-0858030)

GPU Variant

M76 XT-M (216XJBKA13FG)

GCN 3.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

65 nm

1.55 billion

Transistors

0.39 billion

125 mm²

Die Size

153 mm²

Graphics Features

12 (12_0)

DirectX

10.0 (10_0)

4.6

OpenGL

3.3

2.1

OpenCL

N/A

1.2.170

Vulkan

N/A

-

6.5

Shader Model

4.0

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