AMD Radeon RX 580X Mobile vs NVIDIA GeForce GTX 660M Mac Edition

VS

AMD Radeon RX 580X Mobile

NVIDIA GeForce GTX 660M Mac Edition

We compared two Mobile platform GPUs: 8GB VRAM Radeon RX 580X Mobile and 512MB VRAM GeForce GTX 660M 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 5 years late

Boost Clock1077MHz

More VRAM (8GB vs 512GB)

Larger VRAM bandwidth (256.0GB/s vs 80.00GB/s)

1920 additional rendering cores

NVIDIA GeForce GTX 660M Mac Edition 's Advantages

Lower TDP (50W vs 100W)

Score

Benchmark

FP32 (float)

Radeon RX 580X Mobile +579%

4.963 TFLOPS

GeForce GTX 660M Mac Edition

0.73 TFLOPS

Radeon RX 580X Mobile

VS

GeForce GTX 660M Mac Edition

Graphics Card

Apr 2018

Release Date

Apr 2013

Mobility Radeon

Generation

GeForce 600M

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

MXM-B (3.0)

Clock Speeds

1000 MHz

Base Clock

-

1077 MHz

Boost Clock

-

2000 MHz

Memory Clock

1250 MHz

Memory

8GB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

256.0GB/s

Bandwidth

80.00GB/s

Render Config

36

Compute Units

-

2304

Shading Units

384

144

TMUs

32

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

2 MB

L2 Cache

256 KB

-

Theoretical Performance

34.46 GPixel/s

Pixel Rate

7.600 GPixel/s

155.1 GTexel/s

Texture Rate

30.40 GTexel/s

4.963 TFLOPS

FP16 (half)

-

4.963 TFLOPS

FP32 (float)

729.6 GFLOPS

310.2 GFLOPS

FP64 (double)

30.40 GFLOPS

Board Design

100W

TDP

50W

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Processor

Polaris 20

GPU Name

GK107

Polaris 20M XT

GPU Variant

-

GCN 4.0

Architecture

Kepler

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

5.7 billion

Transistors

1.27 billion

232 mm²

Die Size

118 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.1

OpenCL

3.0

1.2

Vulkan

1.1

-

CUDA

3.0

6.4

Shader Model

5.1

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