NVIDIA GeForce 6800 vs NVIDIA GeForce GTX 660

VS

NVIDIA GeForce 6800

NVIDIA GeForce GTX 660

We compared two Desktop platform GPUs: 256MB VRAM GeForce 6800 and 2GB VRAM GeForce GTX 660 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 's Advantages

Released 7 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

Graphics Card

Nov 2004

Release Date

Sep 2012

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

GK106

-

GPU Variant

GK106-400-A1

Curie

Architecture

Kepler

TSMC

Foundry

TSMC

130 nm

Process Size

28 nm

0.19 billion

Transistors

2.54 billion

225 mm²

Die Size

221 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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