AMD Radeon R5 M255 vs AMD Radeon R9 M275

VS

We compared two Mobile platform GPUs: 2GB VRAM Radeon R5 M255 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 M255 's Advantages

Released 9 months late

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

AMD Radeon R9 M275 's Advantages

Larger VRAM bandwidth (64.00GB/s vs 32.00GB/s)

256 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R5 M255

0.721 TFLOPS

Radeon R9 M275 +64%

1.184 TFLOPS

Radeon R5 M255

VS

Radeon R9 M275

Graphics Card

Oct 2014

Release Date

Jan 2014

Gem System

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

2GB

Memory Size

2GB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

128bit

32.00GB/s

Bandwidth

64.00GB/s

Render Config

-

SM Count

-

6

Compute Units

10

384

Shading Units

640

24

TMUs

40

8

ROPs

16

-

Tensor Cores

-

RT Cores

-

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

FP16 (half)

-

721.9 GFLOPS

FP32 (float)

1184 GFLOPS

45.12 GFLOPS

FP64 (double)

74.00 GFLOPS

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

Board Design

Unknown

TDP

Unknown

-

Suggested PSU

-

Portable Device Dependent

Outputs

Portable Device Dependent

-

Power Connectors

-

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

-

CUDA

-

6.5

Shader Model

6.5 (5.1)

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