GeForce GTX 780 vs GeForce GTX 660 OEM

VS

NVIDIA GeForce GTX 780

NVIDIA GeForce GTX 660 OEM

We compared two Desktop platform GPUs: 3GB VRAM GeForce GTX 780 and 1536MB VRAM GeForce GTX 660 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

GeForce GTX 780 's Advantages

Released 9 months late

Boost Clock has increased by 2% (902MHz vs 888MHz)

More VRAM (3GB vs 1536GB)

Larger VRAM bandwidth (288.4GB/s vs 134.4GB/s)

1152 additional rendering cores

GeForce GTX 660 OEM 's Advantages

Lower TDP (130W vs 250W)

Score

Benchmark

FP32 (float)

GeForce GTX 780 +103%

4156

GeForce GTX 660 OEM

2046

GeForce GTX 780

VS

GeForce GTX 660 OEM

Graphics Card

May 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

823 MHz

902 MHz

Boost Clock

888 MHz

1502 MHz

Memory Clock

1400 MHz

Memory

3GB

Memory Size

1536MB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

192bit

288.4GB/s

Bandwidth

134.4GB/s

Render Config

2304

Shading Units

1152

192

TMUs

96

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

21.31 GPixel/s

173.2 GTexel/s

Texture Rate

85.25 GTexel/s

4.156 TFLOPS

FP32 (float)

2.046 TFLOPS

173.2 GFLOPS

FP64 (double)

85.25 GFLOPS

Board Design

250W

TDP

130W

600 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

1x 6-pin + 1x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

GK110

GPU Name

GK104

GK110-300-A1

GPU Variant

GK104-200-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_0)

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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