AMD Radeon E6460 vs AMD Radeon R5 M255

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We compared two Mobile platform GPUs: 512MB VRAM Radeon E6460 and 2GB VRAM Radeon R5 M255 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R5 M255 's Advantages

Released 3 years and 6 months late

Boost Clock940MHz

Larger VRAM bandwidth (32.00GB/s vs 25.60GB/s)

224 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon E6460

0.192 TFLOPS

Radeon R5 M255 +275%

0.721 TFLOPS

Radeon E6460

VS

Radeon R5 M255

Graphics Card

Apr 2011

Release Date

Oct 2014

Embedded

Generation

Gem System

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

925 MHz

-

Boost Clock

940 MHz

800 MHz

Memory Clock

1000 MHz

Memory

512MB

Memory Size

2GB

GDDR5

Memory Type

DDR3

64bit

Memory Bus

128bit

25.60GB/s

Bandwidth

32.00GB/s

Render Config

-

SM Count

-

2

Compute Units

6

160

Shading Units

384

8

TMUs

24

4

ROPs

8

-

Tensor Cores

-

RT Cores

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

256 KB

Theoretical Performance

2.400 GPixel/s

Pixel Rate

7.520 GPixel/s

4.800 GTexel/s

Texture Rate

22.56 GTexel/s

-

FP16 (half)

721.9 GFLOPS

192.0 GFLOPS

FP32 (float)

721.9 GFLOPS

-

FP64 (double)

45.12 GFLOPS

Graphics Processor

Caicos

GPU Name

Topaz

E6460

GPU Variant

Topaz PRO (216-0858030)

TeraScale 2

Architecture

GCN 3.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.37 billion

Transistors

1.55 billion

67 mm²

Die Size

125 mm²

Board Design

25W

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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