AMD Radeon R5 A255 vs AMD Radeon R9 M275

VS

AMD Radeon R5 A255

AMD Radeon R9 M275

We compared two Mobile platform GPUs: 1024MB VRAM Radeon R5 A255 and 2GB VRAM Radeon R9 M275 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R5 A255 's Advantages

Boost Clock has increased by 2% (940MHz vs 925MHz)

AMD Radeon R9 M275 's Advantages

More VRAM (2GB vs 1024GB)

256 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R5 A255

0.721 TFLOPS

Radeon R9 M275 +64%

1.184 TFLOPS

Radeon R5 A255

VS

Radeon R9 M275

Graphics Card

Jan 2014

Release Date

Jan 2014

All-In-One

Generation

Gem System

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

925 MHz

Base Clock

900 MHz

940 MHz

Boost Clock

925 MHz

1000 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

64.00GB/s

Bandwidth

64.00GB/s

Render Config

6

Compute Units

10

-

384

Shading Units

640

24

TMUs

40

8

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

7.520 GPixel/s

Pixel Rate

14.80 GPixel/s

22.56 GTexel/s

Texture Rate

37.00 GTexel/s

-

721.9 GFLOPS

FP32 (float)

1184 GFLOPS

-

FP64 (double)

74.00 GFLOPS

Board Design

Unknown

TDP

Unknown

-

Portable Device Dependent

Outputs

Portable Device Dependent

-

Graphics Processor

Topaz

GPU Name

Venus

Topaz PRO (216-0858030)

GPU Variant

Venus XTX (216-0846033)

GCN 3.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.55 billion

Transistors

1.5 billion

125 mm²

Die Size

123 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

2.1 (1.2)

1.2.170

Vulkan

1.2.170

-

6.5

Shader Model

6.5 (5.1)

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