AMD Radeon R9 M290X vs AMD Radeon HD 6490M Mac Edition

VS

AMD Radeon R9 M290X

AMD Radeon HD 6490M Mac Edition

We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M290X and 256MB VRAM Radeon HD 6490M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M290X 's Advantages

Released 2 years and 8 months late

Boost Clock900MHz

More VRAM (4GB vs 256GB)

Larger VRAM bandwidth (153.6GB/s vs 25.41GB/s)

1120 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 M290X +860%

2.304 TFLOPS

Radeon HD 6490M Mac Edition

0.24 TFLOPS

Radeon R9 M290X

VS

Radeon HD 6490M Mac Edition

Graphics Card

Jan 2014

Release Date

May 2011

Crystal System

Generation

Vancouver

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

850 MHz

Base Clock

-

900 MHz

Boost Clock

-

1200 MHz

Memory Clock

794 MHz

Memory

4GB

Memory Size

256MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

64bit

153.6GB/s

Bandwidth

25.41GB/s

Render Config

20

Compute Units

2

-

1280

Shading Units

160

80

TMUs

8

32

ROPs

4

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

128 KB

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

3.000 GPixel/s

72.00 GTexel/s

Texture Rate

6.000 GTexel/s

-

2.304 TFLOPS

FP32 (float)

240.0 GFLOPS

144.0 GFLOPS

FP64 (double)

-

Board Design

100W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

-

Graphics Processor

Neptune

GPU Name

Seymour

Neptune XT (216-0847000)

GPU Variant

Seymour XTX M2 (216-0809000)

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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