NVIDIA GeForce GTX 780 Ti Engineering Sample vs NVIDIA GeForce GTX 660 OEM

VS

NVIDIA GeForce GTX 780 Ti Engineering Sample

NVIDIA GeForce GTX 660 OEM

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

Main Differences

NVIDIA GeForce GTX 780 Ti Engineering Sample 's Advantages

Boost Clock has increased by 5% (928MHz vs 888MHz)

More VRAM (3GB vs 1536GB)

Larger VRAM bandwidth (336.6GB/s vs 134.4GB/s)

1728 additional rendering cores

NVIDIA GeForce GTX 660 OEM 's Advantages

Lower TDP (130W vs 250W)

Score

Benchmark

FP32 (float)

GeForce GTX 780 Ti Engineering Sample +161%

5.345 TFLOPS

GeForce GTX 660 OEM

2.046 TFLOPS

GeForce GTX 780 Ti Engineering Sample

VS

GeForce GTX 660 OEM

Graphics Card

Unknown

Release Date

Aug 2012

GeForce 700

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

875 MHz

Base Clock

823 MHz

928 MHz

Boost Clock

888 MHz

1753 MHz

Memory Clock

1400 MHz

Memory

3GB

Memory Size

1536MB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

192bit

336.6GB/s

Bandwidth

134.4GB/s

Render Config

-

2880

Shading Units

1152

240

TMUs

96

48

ROPs

24

-

16 KB (per SMX)

L1 Cache

16 KB (per SMX)

1536 KB

L2 Cache

384 KB

-

Theoretical Performance

55.68 GPixel/s

Pixel Rate

21.31 GPixel/s

222.7 GTexel/s

Texture Rate

85.25 GTexel/s

-

5.345 TFLOPS

FP32 (float)

2.046 TFLOPS

222.7 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

GK180

GPU Name

GK104

GK180-425-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

1.2.175

Vulkan

1.1

3.5

CUDA

3.0

5.1

Shader Model

5.1

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