AMD Radeon RX 580X Mobile vs AMD Radeon HD 6490M Mac Edition

VS

AMD Radeon RX 580X Mobile AMD Radeon HD 6490M Mac Edition

We compared two Mobile platform GPUs: 8GB VRAM Radeon RX 580X Mobile 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 RX 580X Mobile 's Advantages

Released 6 years and 11 months late

Boost Clock1077MHz

Larger VRAM bandwidth (256.0GB/s vs 25.41GB/s)

2144 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 580X Mobile +1967%

4.963 TFLOPS

Radeon HD 6490M Mac Edition

0.24 TFLOPS

Radeon RX 580X Mobile

VS

Radeon HD 6490M Mac Edition

Graphics Card

Apr 2018

Release Date

May 2011

Mobility Radeon

Generation

Vancouver

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 2.0 x16

Clock Speeds

1000 MHz

Base Clock

-

1077 MHz

Boost Clock

-

2000 MHz

Memory Clock

794 MHz

Memory

8GB

Memory Size

256MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

64bit

256.0GB/s

Bandwidth

25.41GB/s

Render Config

-

SM Count

-

36

Compute Units

2

2304

Shading Units

160

144

TMUs

8

32

ROPs

4

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

2 MB

L2 Cache

128 KB

Theoretical Performance

34.46 GPixel/s

Pixel Rate

3.000 GPixel/s

155.1 GTexel/s

Texture Rate

6.000 GTexel/s

4.963 TFLOPS

FP16 (half)

-

4.963 TFLOPS

FP32 (float)

240.0 GFLOPS

310.2 GFLOPS

FP64 (double)

-

Graphics Processor

Polaris 20

GPU Name

Seymour

Polaris 20M XT

GPU Variant

Seymour XTX M2 (216-0809000)

GCN 4.0

Architecture

TeraScale 2

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

40 nm

5.7 billion

Transistors

0.37 billion

232 mm²

Die Size

67 mm²

Board Design

100W

TDP

Unknown

-

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

-

Graphics Features

12 (12_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.1

OpenCL

1.2

Vulkan

N/A

-

CUDA

-

6.4

Shader Model

5.0

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