NVIDIA GeForce GTX 680MX Mac Edition vs AMD Radeon R9 M390X

VS

NVIDIA GeForce GTX 680MX Mac Edition

AMD Radeon R9 M390X

We compared two Mobile platform GPUs: 2GB VRAM GeForce GTX 680MX Mac Edition and 4GB VRAM Radeon R9 M390X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M390X 's Advantages

Released 2 years and 7 months late

More VRAM (4GB vs 2GB)

512 additional rendering cores

Lower TDP (75W vs 122W)

Score

Benchmark

FP32 (float)

GeForce GTX 680MX Mac Edition

2.209 TFLOPS

Radeon R9 M390X +34%

2.961 TFLOPS

GeForce GTX 680MX Mac Edition

VS

Radeon R9 M390X

Graphics Card

Oct 2012

Release Date

May 2015

GeForce 600M

Generation

Crystal System

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

1250 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

160.0GB/s

Bandwidth

160.0GB/s

Render Config

-

Compute Units

32

-

1536

Shading Units

2048

128

TMUs

128

32

ROPs

32

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

23.01 GPixel/s

Pixel Rate

23.14 GPixel/s

92.03 GTexel/s

Texture Rate

92.54 GTexel/s

-

FP16 (half)

2.961 TFLOPS

2.209 TFLOPS

FP32 (float)

2.961 TFLOPS

92.03 GFLOPS

FP64 (double)

185.1 GFLOPS

Board Design

122W

TDP

75W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

GK104

GPU Name

Amethyst

N13E-GTX2-A2

GPU Variant

Amethyst XT

Kepler

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

3.54 billion

Transistors

5 billion

294 mm²

Die Size

366 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

3.0

OpenCL

2.0

1.1

Vulkan

1.2

3.0

CUDA

-

5.1

Shader Model

6.3

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