NVIDIA GeForce 940A vs NVIDIA GeForce GTX 660M Mac Edition

VS

NVIDIA GeForce 940A NVIDIA GeForce GTX 660M Mac Edition

We compared two Mobile platform GPUs: 1024MB VRAM GeForce 940A 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

NVIDIA GeForce 940A 's Advantages

Released 1 years and 11 months late

Boost Clock1124MHz

More VRAM (1024GB vs 512GB)

Lower TDP (33W vs 50W)

NVIDIA GeForce GTX 660M Mac Edition 's Advantages

Larger VRAM bandwidth (80.00GB/s vs 16.02GB/s)

Score

Benchmark

FP32 (float)

GeForce 940A +18%

0.863 TFLOPS

GeForce GTX 660M Mac Edition

0.73 TFLOPS

GeForce 940A

VS

GeForce GTX 660M Mac Edition

Graphics Card

Mar 2015

Release Date

Apr 2013

GeForce 900A

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

MXM-B (3.0)

Clock Speeds

1029 MHz

Base Clock

-

1124 MHz

Boost Clock

-

1001 MHz

Memory Clock

1250 MHz

Memory

1024MB

Memory Size

512MB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

128bit

16.02GB/s

Bandwidth

80.00GB/s

Render Config

-

SM Count

-

Compute Units

-

384

Shading Units

384

16

TMUs

32

8

ROPs

16

-

Tensor Cores

-

RT Cores

-

64 KB (per SMM)

L1 Cache

16 KB (per SMX)

1024 KB

L2 Cache

256 KB

Theoretical Performance

8.992 GPixel/s

Pixel Rate

7.600 GPixel/s

17.98 GTexel/s

Texture Rate

30.40 GTexel/s

-

FP16 (half)

-

863.2 GFLOPS

FP32 (float)

729.6 GFLOPS

26.98 GFLOPS

FP64 (double)

30.40 GFLOPS

Graphics Processor

GM108

GPU Name

GK107

-

GPU Variant

-

Maxwell

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

Unknown

Transistors

1.27 billion

Unknown

Die Size

118 mm²

Board Design

33W

TDP

50W

-

Suggested PSU

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.3

Vulkan

1.1

5.0

CUDA

3.0

5.1

Shader Model

5.1

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