NVIDIA GeForce GTX 680 vs NVIDIA GeForce GTX 660 Rev. 2

VS

NVIDIA GeForce GTX 680 NVIDIA GeForce GTX 660 Rev. 2

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 680 and 2GB VRAM GeForce GTX 660 Rev. 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 680 's Advantages

Boost Clock has increased by 3% (1058MHz vs 1032MHz)

Larger VRAM bandwidth (192.3GB/s vs 144.2GB/s)

576 additional rendering cores

NVIDIA GeForce GTX 660 Rev. 2 's Advantages

Released 2 years and 6 months late

Lower TDP (140W vs 195W)

Score

Benchmark

FP32 (float)

GeForce GTX 680 +64%

3.25 TFLOPS

GeForce GTX 660 Rev. 2

1.981 TFLOPS

GeForce GTX 680

VS

GeForce GTX 660 Rev. 2

Graphics Card

Mar 2012

Release Date

Sep 2014

GeForce 600

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1006 MHz

Base Clock

980 MHz

1058 MHz

Boost Clock

1032 MHz

1502 MHz

Memory Clock

1502 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

192bit

192.3GB/s

Bandwidth

144.2GB/s

Render Config

-

SM Count

-

Compute Units

-

1536

Shading Units

960

128

TMUs

80

32

ROPs

24

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

16 KB (per SMX)

512 KB

L2 Cache

384 KB

Theoretical Performance

33.86 GPixel/s

Pixel Rate

20.64 GPixel/s

135.4 GTexel/s

Texture Rate

82.56 GTexel/s

-

FP16 (half)

-

3.250 TFLOPS

FP32 (float)

1.981 TFLOPS

135.4 GFLOPS

FP64 (double)

82.56 GFLOPS

Graphics Processor

GK104

GPU Name

GK104

GK104-400-A2

GPU Variant

-

Kepler

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

3.54 billion

Transistors

3.54 billion

294 mm²

Die Size

294 mm²

Board Design

195W

TDP

140W

450 W

Suggested PSU

300 W

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

Outputs

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

2x 6-pin

Power Connectors

1x 6-pin

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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