NVIDIA GeForce 6800 vs NVIDIA GeForce GTX 660 Rev. 2

VS

NVIDIA GeForce 6800

NVIDIA GeForce GTX 660 Rev. 2

We compared two Desktop platform GPUs: 256MB VRAM GeForce 6800 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 660 Rev. 2 's Advantages

Released 9 years and 10 months late

Boost Clock1032MHz

More VRAM (2GB vs 256GB)

Larger VRAM bandwidth (144.2GB/s vs 19.20GB/s)

960 additional rendering cores

Score

GeForce 6800

VS

GeForce GTX 660 Rev. 2

Graphics Card

Nov 2004

Release Date

Sep 2014

GeForce 6 PCIe

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 1.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

980 MHz

-

Boost Clock

1032 MHz

300 MHz

Memory Clock

1502 MHz

Memory

256MB

Memory Size

2GB

DDR

Memory Type

GDDR5

256bit

Memory Bus

192bit

19.20GB/s

Bandwidth

144.2GB/s

Render Config

-

Shading Units

960

12

TMUs

80

8

ROPs

24

-

L1 Cache

16 KB (per SMX)

-

L2 Cache

384 KB

-

Theoretical Performance

2.600 GPixel/s

Pixel Rate

20.64 GPixel/s

3.900 GTexel/s

Texture Rate

82.56 GTexel/s

-

FP32 (float)

1.981 TFLOPS

-

FP64 (double)

82.56 GFLOPS

Board Design

Unknown

TDP

140W

200 W

Suggested PSU

300 W

1x DVI 1x VGA 1x S-Video

Outputs

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

None

Power Connectors

1x 6-pin

Graphics Processor

NV41

GPU Name

GK104

-

Curie

Architecture

Kepler

TSMC

Foundry

TSMC

130 nm

Process Size

28 nm

0.19 billion

Transistors

3.54 billion

225 mm²

Die Size

294 mm²

Graphics Features

9.0c (9_3)

DirectX

12 (11_0)

2.0 (full) 2.1 (partial)

OpenGL

4.6

N/A

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.0

Shader Model

5.1

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