NVIDIA GeForce GTX 780 Rev. 2 vs NVIDIA GeForce GTX 660 Ti

VS

NVIDIA GeForce GTX 780 Rev. 2

NVIDIA GeForce GTX 660 Ti

We compared two Desktop platform GPUs: 3GB VRAM GeForce GTX 780 Rev. 2 and 2GB VRAM GeForce GTX 660 Ti to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 780 Rev. 2 's Advantages

Released 1 years and 1 months late

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (288.4GB/s vs 144.2GB/s)

960 additional rendering cores

NVIDIA GeForce GTX 660 Ti 's Advantages

Boost Clock has increased by 9% (980MHz vs 902MHz)

Lower TDP (150W vs 250W)

Score

Benchmark

FP32 (float)

GeForce GTX 780 Rev. 2 +57%

4.156 TFLOPS

GeForce GTX 660 Ti

2.634 TFLOPS

GeForce GTX 780 Rev. 2

VS

GeForce GTX 660 Ti

Graphics Card

Sep 2013

Release Date

Aug 2012

GeForce 700

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

863 MHz

Base Clock

915 MHz

902 MHz

Boost Clock

980 MHz

1502 MHz

Memory Clock

1502 MHz

Memory

3GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

192bit

288.4GB/s

Bandwidth

144.2GB/s

Render Config

-

2304

Shading Units

1344

192

TMUs

112

48

ROPs

24

-

16 KB (per SMX)

L1 Cache

16 KB (per SMX)

1536 KB

L2 Cache

384 KB

-

Theoretical Performance

43.30 GPixel/s

Pixel Rate

27.44 GPixel/s

173.2 GTexel/s

Texture Rate

109.8 GTexel/s

-

4.156 TFLOPS

FP32 (float)

2.634 TFLOPS

173.2 GFLOPS

FP64 (double)

109.8 GFLOPS

Board Design

250W

TDP

150W

600 W

Suggested PSU

450 W

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

Outputs

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

1x 6-pin + 1x 8-pin

Power Connectors

2x 6-pin

Graphics Processor

GK110B

GPU Name

GK104

GK110-300-B1

GPU Variant

GK104-300-KD-A2

Kepler

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

7.08 billion

Transistors

3.54 billion

561 mm²

Die Size

294 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.1

3.5

CUDA

3.0

5.1

Shader Model

5.1

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