AMD Radeon R9 M390 Mac Edition vs AMD Radeon E6460

VS

AMD Radeon R9 M390 Mac Edition

AMD Radeon E6460

We compared two Mobile platform GPUs: 2GB VRAM Radeon R9 M390 Mac Edition 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 M390 Mac Edition 's Advantages

Released 4 years and 1 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (174.7GB/s vs 25.60GB/s)

864 additional rendering cores

AMD Radeon E6460 's Advantages

Lower TDP (25W vs 80W)

Score

Benchmark

FP32 (float)

Radeon R9 M390 Mac Edition +921%

1.962 TFLOPS

Radeon E6460

0.192 TFLOPS

Radeon R9 M390 Mac Edition

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

-

1365 MHz

Memory Clock

800 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

64bit

174.7GB/s

Bandwidth

25.60GB/s

Render Config

16

Compute Units

2

-

1024

Shading Units

160

64

TMUs

8

32

ROPs

4

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

128 KB

-

Theoretical Performance

30.66 GPixel/s

Pixel Rate

2.400 GPixel/s

61.31 GTexel/s

Texture Rate

4.800 GTexel/s

-

1.962 TFLOPS

FP32 (float)

192.0 GFLOPS

122.6 GFLOPS

FP64 (double)

-

Board Design

80W

TDP

25W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Pitcairn

GPU Name

Caicos

Pitcairn PRO (215-0828062)

GPU Variant

E6460

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.8 billion

Transistors

0.37 billion

212 mm²

Die Size

67 mm²

Graphics Features

12 (11_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.2

OpenCL

1.2

Vulkan

N/A

-

5.1

Shader Model

5.0

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