NVIDIA GeForce GT 745A vs NVIDIA GeForce GTX 660M Mac Edition

VS

NVIDIA GeForce GT 745A

NVIDIA GeForce GTX 660M Mac Edition

We compared two Mobile platform GPUs: 2GB VRAM GeForce GT 745A 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 GT 745A 's Advantages

Boost Clock915MHz

More VRAM (2GB vs 512GB)

Lower TDP (33W vs 50W)

NVIDIA GeForce GTX 660M Mac Edition 's Advantages

Larger VRAM bandwidth (80.00GB/s vs 28.80GB/s)

Score

Benchmark

FP32 (float)

GeForce GT 745A

0.703 TFLOPS

GeForce GTX 660M Mac Edition +3%

0.73 TFLOPS

GeForce GT 745A

VS

GeForce GTX 660M Mac Edition

Graphics Card

Aug 2013

Release Date

Apr 2013

GeForce 700A

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

837 MHz

Base Clock

-

915 MHz

Boost Clock

-

900 MHz

Memory Clock

1250 MHz

Memory

2GB

Memory Size

512MB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

128bit

28.80GB/s

Bandwidth

80.00GB/s

Render Config

-

384

Shading Units

384

32

TMUs

32

16

ROPs

16

-

16 KB (per SMX)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

7.320 GPixel/s

Pixel Rate

7.600 GPixel/s

29.28 GTexel/s

Texture Rate

30.40 GTexel/s

-

702.7 GFLOPS

FP32 (float)

729.6 GFLOPS

29.28 GFLOPS

FP64 (double)

30.40 GFLOPS

Board Design

33W

TDP

50W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

GK107

GPU Name

GK107

N14P-LP

GPU Variant

-

Kepler

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.27 billion

Transistors

1.27 billion

118 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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