NVIDIA GeForce GTX 850M vs AMD Radeon R9 M395X Mac Edition

VS

NVIDIA GeForce GTX 850M

AMD Radeon R9 M395X Mac Edition

We compared two Mobile platform GPUs: 2GB VRAM GeForce GTX 850M and 4GB VRAM Radeon R9 M395X Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 850M 's Advantages

Lower TDP (45W vs 250W)

AMD Radeon R9 M395X Mac Edition 's Advantages

Released 1 years and 2 months late

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (174.7GB/s vs 32.03GB/s)

1408 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 850M

1.155 TFLOPS

Radeon R9 M395X Mac Edition +222%

3.723 TFLOPS

GeForce GTX 850M

VS

Radeon R9 M395X Mac Edition

Graphics Card

Mar 2014

Release Date

May 2015

GeForce 800M

Generation

Crystal System

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

-

1001 MHz

Memory Clock

1365 MHz

Memory

2GB

Memory Size

4GB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

256bit

32.03GB/s

Bandwidth

174.7GB/s

Render Config

-

Compute Units

32

-

640

Shading Units

2048

40

TMUs

128

16

ROPs

32

-

64 KB (per SMM)

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

512 KB

-

Theoretical Performance

14.43 GPixel/s

Pixel Rate

29.09 GPixel/s

36.08 GTexel/s

Texture Rate

116.4 GTexel/s

-

FP16 (half)

3.723 TFLOPS

1155 GFLOPS

FP32 (float)

3.723 TFLOPS

36.08 GFLOPS

FP64 (double)

232.7 GFLOPS

Board Design

45W

TDP

250W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

GM107

GPU Name

Amethyst

N15P-GT-A1

GPU Variant

Amethyst XT

Maxwell

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.87 billion

Transistors

5 billion

148 mm²

Die Size

366 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

3.0

OpenCL

2.0

1.3

Vulkan

1.2

5.0

CUDA

-

5.1

Shader Model

6.3

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