AMD Radeon HD 6490M Mac Edition vs AMD Radeon R9 M395X

VS

AMD Radeon HD 6490M Mac Edition

AMD Radeon R9 M395X

We compared two Mobile platform GPUs: 256MB VRAM Radeon HD 6490M Mac Edition and 8GB VRAM Radeon R9 M395X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M395X 's Advantages

Released 4 years late

More VRAM (8GB vs 256GB)

Larger VRAM bandwidth (160.0GB/s vs 25.41GB/s)

1888 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6490M Mac Edition

0.24 TFLOPS

Radeon R9 M395X +1133%

2.961 TFLOPS

Radeon HD 6490M Mac Edition

VS

Radeon R9 M395X

Graphics Card

May 2011

Release Date

May 2015

Vancouver

Generation

Crystal System

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

794 MHz

Memory Clock

1250 MHz

Memory

256MB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

256bit

25.41GB/s

Bandwidth

160.0GB/s

Render Config

2

Compute Units

32

-

160

Shading Units

2048

8

TMUs

128

4

ROPs

32

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

512 KB

-

Theoretical Performance

3.000 GPixel/s

Pixel Rate

23.14 GPixel/s

6.000 GTexel/s

Texture Rate

92.54 GTexel/s

-

FP16 (half)

2.961 TFLOPS

240.0 GFLOPS

FP32 (float)

2.961 TFLOPS

-

FP64 (double)

185.1 GFLOPS

Board Design

Unknown

TDP

75W

-

Portable Device Dependent

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Seymour

GPU Name

Amethyst

Seymour XTX M2 (216-0809000)

GPU Variant

Amethyst XT

TeraScale 2

Architecture

GCN 3.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.37 billion

Transistors

5 billion

67 mm²

Die Size

366 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (12_0)

4.4

OpenGL

4.6

1.2

OpenCL

2.0

N/A

Vulkan

1.2

-

5.0

Shader Model

6.3

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