NVIDIA GeForce GTX 660 Rev. 2 vs NVIDIA GeForce GTX 745 OEM

VS

NVIDIA GeForce GTX 660 Rev. 2

NVIDIA GeForce GTX 745 OEM

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Rev. 2 and 4GB VRAM GeForce GTX 745 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 Rev. 2 's Advantages

Released 7 months late

Boost Clock1032MHz

Larger VRAM bandwidth (144.2GB/s vs 28.80GB/s)

576 additional rendering cores

NVIDIA GeForce GTX 745 OEM 's Advantages

More VRAM (4GB vs 2GB)

Lower TDP (55W vs 140W)

Score

Benchmark

FP32 (float)

GeForce GTX 660 Rev. 2 +149%

1.981 TFLOPS

GeForce GTX 745 OEM

0.793 TFLOPS

GeForce GTX 660 Rev. 2

VS

GeForce GTX 745 OEM

Graphics Card

Sep 2014

Release Date

Feb 2014

GeForce 600

Generation

GeForce 700

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

980 MHz

Base Clock

-

1032 MHz

Boost Clock

-

1502 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

DDR3

192bit

Memory Bus

128bit

144.2GB/s

Bandwidth

28.80GB/s

Render Config

-

960

Shading Units

384

80

TMUs

24

ROPs

16

-

16 KB (per SMX)

L1 Cache

64 KB (per SMM)

384 KB

L2 Cache

2 MB

-

Theoretical Performance

20.64 GPixel/s

Pixel Rate

16.53 GPixel/s

82.56 GTexel/s

Texture Rate

24.79 GTexel/s

-

1.981 TFLOPS

FP32 (float)

793.3 GFLOPS

82.56 GFLOPS

FP64 (double)

24.79 GFLOPS

Board Design

140W

TDP

55W

300 W

Suggested PSU

250 W

2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

Outputs

1x DVI 1x HDMI 2.0 1x VGA

1x 6-pin

Power Connectors

None

Graphics Processor

GK104

GPU Name

GM107

-

GPU Variant

GM107-220-A2

Kepler

Architecture

Maxwell

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

3.54 billion

Transistors

1.87 billion

294 mm²

Die Size

148 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.3

3.0

CUDA

5.0

5.1

Shader Model

5.1

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