NVIDIA GeForce GTX 660 Rev. 2 vs NVIDIA GeForce GTX 980 Ti

VS

NVIDIA GeForce GTX 660 Rev. 2 NVIDIA GeForce GTX 980 Ti

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Rev. 2 and 6GB VRAM GeForce GTX 980 Ti 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

Lower TDP (140W vs 250W)

NVIDIA GeForce GTX 980 Ti 's Advantages

Released 9 months late

Boost Clock has increased by 4% (1076MHz vs 1032MHz)

More VRAM (6GB vs 2GB)

Larger VRAM bandwidth (336.6GB/s vs 144.2GB/s)

1856 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 660 Rev. 2

1.981 TFLOPS

GeForce GTX 980 Ti +205%

6.06 TFLOPS

GeForce GTX 660 Rev. 2

VS

GeForce GTX 980 Ti

Graphics Card

Sep 2014

Release Date

Jun 2015

GeForce 600

Generation

GeForce 900

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

980 MHz

Base Clock

1000 MHz

1032 MHz

Boost Clock

1076 MHz

1502 MHz

Memory Clock

1753 MHz

Memory

2GB

Memory Size

6GB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

384bit

144.2GB/s

Bandwidth

336.6GB/s

Render Config

-

SM Count

-

Compute Units

-

960

Shading Units

2816

80

TMUs

176

24

ROPs

96

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

48 KB (per SMM)

384 KB

L2 Cache

3 MB

Theoretical Performance

20.64 GPixel/s

Pixel Rate

103.3 GPixel/s

82.56 GTexel/s

Texture Rate

189.4 GTexel/s

-

FP16 (half)

-

1.981 TFLOPS

FP32 (float)

6.060 TFLOPS

82.56 GFLOPS

FP64 (double)

189.4 GFLOPS

Graphics Processor

GK104

GPU Name

GM200

-

GPU Variant

GM200-310-A1

Kepler

Architecture

Maxwell 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

3.54 billion

Transistors

8 billion

294 mm²

Die Size

601 mm²

Board Design

140W

TDP

250W

300 W

Suggested PSU

600 W

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

Outputs

1x DVI 1x HDMI 2.0 3x DisplayPort 1.4a

1x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Features

12 (11_0)

DirectX

12 (12_1)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.3

3.0

CUDA

5.2

5.1

Shader Model

6.4

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