NVIDIA GeForce GTX 660M Mac Edition vs AMD Radeon R9 M385X

VS

NVIDIA GeForce GTX 660M Mac Edition AMD Radeon R9 M385X

We compared two Mobile platform GPUs: 512MB VRAM GeForce GTX 660M Mac Edition and 4GB VRAM Radeon R9 M385X 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 76.80GB/s)

AMD Radeon R9 M385X 's Advantages

Released 2 years and 1 months late

Boost Clock1100MHz

512 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 660M Mac Edition

0.73 TFLOPS

Radeon R9 M385X +170%

1.971 TFLOPS

GeForce GTX 660M Mac Edition

VS

Radeon R9 M385X

Graphics Card

Apr 2013

Release Date

May 2015

GeForce 600M

Generation

Gem System

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1000 MHz

-

Boost Clock

1100 MHz

1250 MHz

Memory Clock

1200 MHz

Memory

512MB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

80.00GB/s

Bandwidth

76.80GB/s

Render Config

-

SM Count

-

Compute Units

14

384

Shading Units

896

32

TMUs

56

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

17.60 GPixel/s

30.40 GTexel/s

Texture Rate

61.60 GTexel/s

-

FP16 (half)

-

729.6 GFLOPS

FP32 (float)

1.971 TFLOPS

30.40 GFLOPS

FP64 (double)

123.2 GFLOPS

Graphics Processor

GK107

GPU Name

Strato

-

GPU Variant

Strato XT

Kepler

Architecture

GCN 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.27 billion

Transistors

2.08 billion

118 mm²

Die Size

160 mm²

Board Design

50W

TDP

Unknown

-

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

-

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

3.0

OpenCL

2.1

1.1

Vulkan

1.2.170

3.0

CUDA

-

5.1

Shader Model

6.5

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