AMD Radeon R9 M395 Mac Edition vs NVIDIA GeForce GT 640M

VS

AMD Radeon R9 M395 Mac Edition

NVIDIA GeForce GT 640M

We compared two Mobile platform GPUs: 2GB VRAM Radeon R9 M395 Mac Edition and 2GB VRAM GeForce GT 640M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M395 Mac Edition 's Advantages

Released 3 years and 2 months late

Larger VRAM bandwidth (174.7GB/s vs 28.80GB/s)

1408 additional rendering cores

NVIDIA GeForce GT 640M 's Advantages

Lower TDP (32W vs 250W)

Score

Benchmark

FP32 (float)

Radeon R9 M395 Mac Edition +522%

2.989 TFLOPS

GeForce GT 640M

0.48 TFLOPS

Radeon R9 M395 Mac Edition

VS

GeForce GT 640M

Graphics Card

May 2015

Release Date

Mar 2012

Crystal System

Generation

GeForce 600M

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1365 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

128bit

174.7GB/s

Bandwidth

28.80GB/s

Render Config

28

Compute Units

-

1792

Shading Units

384

112

TMUs

32

ROPs

16

-

L1 Cache

16 KB (per SMX)

-

L2 Cache

256 KB

-

Theoretical Performance

26.69 GPixel/s

Pixel Rate

5.000 GPixel/s

93.41 GTexel/s

Texture Rate

20.00 GTexel/s

-

2.989 TFLOPS

FP32 (float)

480.0 GFLOPS

373.6 GFLOPS

FP64 (double)

20.00 GFLOPS

Board Design

250W

TDP

32W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Amethyst

GPU Name

GK107

Amethyst PRO (216-0872004)

GPU Variant

N13P-GS

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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