AMD Radeon R9 M390X vs AMD Radeon E6460

VS

AMD Radeon R9 M390X

AMD Radeon E6460

We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M390X and 512MB VRAM Radeon E6460 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M390X 's Advantages

Released 4 years and 1 months late

More VRAM (4GB vs 512GB)

Larger VRAM bandwidth (160.0GB/s vs 25.60GB/s)

1888 additional rendering cores

AMD Radeon E6460 's Advantages

Lower TDP (25W vs 75W)

Score

Benchmark

FP32 (float)

Radeon R9 M390X +1442%

2.961 TFLOPS

Radeon E6460

0.192 TFLOPS

Radeon R9 M390X

VS

Radeon E6460

Graphics Card

May 2015

Release Date

Apr 2011

Crystal System

Generation

Embedded

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

800 MHz

Memory

4GB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

64bit

160.0GB/s

Bandwidth

25.60GB/s

Render Config

32

Compute Units

2

-

2048

Shading Units

160

128

TMUs

8

32

ROPs

4

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

128 KB

-

Theoretical Performance

23.14 GPixel/s

Pixel Rate

2.400 GPixel/s

92.54 GTexel/s

Texture Rate

4.800 GTexel/s

2.961 TFLOPS

FP16 (half)

-

2.961 TFLOPS

FP32 (float)

192.0 GFLOPS

185.1 GFLOPS

FP64 (double)

-

Board Design

75W

TDP

25W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Amethyst

GPU Name

Caicos

Amethyst XT

GPU Variant

E6460

GCN 3.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

5 billion

Transistors

0.37 billion

366 mm²

Die Size

67 mm²

Graphics Features

12 (12_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.0

OpenCL

1.2

Vulkan

N/A

-

6.3

Shader Model

5.0

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