AMD Radeon R9 M295X Mac Edition vs NVIDIA GeForce GTX 660M Mac Edition

VS

AMD Radeon R9 M295X Mac Edition

NVIDIA GeForce GTX 660M Mac Edition

We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M295X Mac Edition 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 R9 M295X Mac Edition 's Advantages

Released 1 years and 7 months late

More VRAM (4GB vs 512GB)

Larger VRAM bandwidth (174.3GB/s vs 80.00GB/s)

1664 additional rendering cores

NVIDIA GeForce GTX 660M Mac Edition 's Advantages

Lower TDP (50W vs 250W)

Score

Benchmark

FP32 (float)

Radeon R9 M295X Mac Edition +376%

3.482 TFLOPS

GeForce GTX 660M Mac Edition

0.73 TFLOPS

Radeon R9 M295X Mac Edition

VS

GeForce GTX 660M Mac Edition

Graphics Card

Nov 2014

Release Date

Apr 2013

Crystal System

Generation

GeForce 600M

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

MXM-B (3.0)

Clock Speeds

-

1362 MHz

Memory Clock

1250 MHz

Memory

4GB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

174.3GB/s

Bandwidth

80.00GB/s

Render Config

32

Compute Units

-

2048

Shading Units

384

128

TMUs

32

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

27.20 GPixel/s

Pixel Rate

7.600 GPixel/s

108.8 GTexel/s

Texture Rate

30.40 GTexel/s

3.482 TFLOPS

FP16 (half)

-

3.482 TFLOPS

FP32 (float)

729.6 GFLOPS

217.6 GFLOPS

FP64 (double)

30.40 GFLOPS

Board Design

250W

TDP

50W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Amethyst

GPU Name

GK107

Amethyst XT

GPU Variant

-

GCN 3.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

5 billion

Transistors

1.27 billion

366 mm²

Die Size

118 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.0

OpenCL

3.0

1.2

Vulkan

1.1

-

CUDA

3.0

6.3

Shader Model

5.1

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