NVIDIA GeForce 945A vs NVIDIA GeForce GTX 660M Mac Edition

VS

NVIDIA GeForce 945A

NVIDIA GeForce GTX 660M Mac Edition

We compared two Mobile platform GPUs: 1024MB VRAM GeForce 945A 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 945A 's Advantages

Released 1 years and 11 months late

Boost Clock1189MHz

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 40.10GB/s)

Score

Benchmark

FP32 (float)

GeForce 945A +25%

0.913 TFLOPS

GeForce GTX 660M Mac Edition

0.73 TFLOPS

GeForce 945A

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

1006 MHz

Base Clock

-

1189 MHz

Boost Clock

-

1253 MHz

Memory Clock

1250 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

128bit

40.10GB/s

Bandwidth

80.00GB/s

Render Config

-

384

Shading Units

384

24

TMUs

32

8

ROPs

16

-

64 KB (per SMM)

L1 Cache

16 KB (per SMX)

1024 KB

L2 Cache

256 KB

-

Theoretical Performance

9.512 GPixel/s

Pixel Rate

7.600 GPixel/s

28.54 GTexel/s

Texture Rate

30.40 GTexel/s

-

913.2 GFLOPS

FP32 (float)

729.6 GFLOPS

28.54 GFLOPS

FP64 (double)

30.40 GFLOPS

Board Design

33W

TDP

50W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

GM108

GPU Name

GK107

-

Maxwell

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

Unknown

Transistors

1.27 billion

Unknown

Die Size

118 mm²

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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