NVIDIA GeForce GTX 680MX Mac Edition vs NVIDIA GeForce GTX 660M

VS

NVIDIA GeForce GTX 680MX Mac Edition

NVIDIA GeForce GTX 660M

We compared two Mobile platform GPUs: 2GB VRAM GeForce GTX 680MX Mac Edition and 1024MB VRAM GeForce GTX 660M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 680MX Mac Edition 's Advantages

Released 7 months late

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (160.0GB/s vs 64.00GB/s)

1152 additional rendering cores

NVIDIA GeForce GTX 660M 's Advantages

Boost Clock950MHz

Lower TDP (50W vs 122W)

Score

Benchmark

FP32 (float)

GeForce GTX 680MX Mac Edition +202%

2.209 TFLOPS

GeForce GTX 660M

0.73 TFLOPS

GeForce GTX 680MX Mac Edition

VS

GeForce GTX 660M

Graphics Card

Oct 2012

Release Date

Mar 2012

GeForce 600M

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

-

Base Clock

835 MHz

-

Boost Clock

950 MHz

1250 MHz

Memory Clock

1000 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

160.0GB/s

Bandwidth

64.00GB/s

Render Config

-

1536

Shading Units

384

128

TMUs

32

ROPs

16

-

16 KB (per SMX)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

23.01 GPixel/s

Pixel Rate

7.600 GPixel/s

92.03 GTexel/s

Texture Rate

30.40 GTexel/s

-

2.209 TFLOPS

FP32 (float)

729.6 GFLOPS

92.03 GFLOPS

FP64 (double)

30.40 GFLOPS

Board Design

122W

TDP

50W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GK104

GPU Name

GK107

N13E-GTX2-A2

GPU Variant

N13E-GE-A2

Kepler

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

3.54 billion

Transistors

1.27 billion

294 mm²

Die Size

118 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.1

3.0

CUDA

3.0

5.1

Shader Model

5.1

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