NVIDIA GeForce GTX 660M Mac Edition vs AMD Radeon 550X Mobile

VS

NVIDIA GeForce GTX 660M Mac Edition AMD Radeon 550X Mobile

We compared two Mobile platform GPUs: 512MB VRAM GeForce GTX 660M Mac Edition and 4GB VRAM Radeon 550X Mobile to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660M Mac Edition 's Advantages

Larger VRAM bandwidth (80.00GB/s vs 48.00GB/s)

AMD Radeon 550X Mobile 's Advantages

Released 5 years late

Boost Clock1287MHz

256 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 660M Mac Edition

0.73 TFLOPS

Radeon 550X Mobile +125%

1.647 TFLOPS

GeForce GTX 660M Mac Edition

VS

Radeon 550X Mobile

Graphics Card

Apr 2013

Release Date

Apr 2018

GeForce 600M

Generation

Mobility Radeon

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

1100 MHz

-

Boost Clock

1287 MHz

1250 MHz

Memory Clock

1500 MHz

Memory

512MB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

64bit

80.00GB/s

Bandwidth

48.00GB/s

Render Config

-

SM Count

-

Compute Units

10

384

Shading Units

640

32

TMUs

40

16

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

Theoretical Performance

7.600 GPixel/s

Pixel Rate

20.59 GPixel/s

30.40 GTexel/s

Texture Rate

51.48 GTexel/s

-

FP16 (half)

1.647 TFLOPS

729.6 GFLOPS

FP32 (float)

1.647 TFLOPS

30.40 GFLOPS

FP64 (double)

103.0 GFLOPS

Graphics Processor

GK107

GPU Name

Polaris 23

-

GPU Variant

Polaris 23 MXT

Kepler

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

1.27 billion

Transistors

2.2 billion

118 mm²

Die Size

103 mm²

Board Design

50W

TDP

50W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

3.0

OpenCL

2.1

1.1

Vulkan

1.2

3.0

CUDA

-

5.1

Shader Model

6.4

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