NVIDIA GeForce GTX 660 Rev. 2 vs NVIDIA GeForce 6800 XT

VS

NVIDIA GeForce GTX 660 Rev. 2

NVIDIA GeForce 6800 XT

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Rev. 2 and 256MB VRAM GeForce 6800 XT 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 late

Boost Clock1032MHz

More VRAM (2GB vs 256GB)

Larger VRAM bandwidth (144.2GB/s vs 38.40GB/s)

960 additional rendering cores

Score

GeForce GTX 660 Rev. 2

VS

GeForce 6800 XT

Graphics Card

Sep 2014

Release Date

Sep 2005

GeForce 600

Generation

GeForce 6 AGP

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

AGP 8x

Clock Speeds

980 MHz

Base Clock

-

1032 MHz

Boost Clock

-

1502 MHz

Memory Clock

600 MHz

Memory

2GB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

192bit

Memory Bus

256bit

144.2GB/s

Bandwidth

38.40GB/s

Render Config

-

960

Shading Units

-

80

TMUs

12

24

ROPs

8

-

16 KB (per SMX)

L1 Cache

-

384 KB

L2 Cache

-

Theoretical Performance

20.64 GPixel/s

Pixel Rate

3.600 GPixel/s

82.56 GTexel/s

Texture Rate

5.400 GTexel/s

-

1.981 TFLOPS

FP32 (float)

-

82.56 GFLOPS

FP64 (double)

-

Board Design

140W

TDP

Unknown

300 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x VGA 1x S-Video

1x 6-pin

Power Connectors

1x Molex

Graphics Processor

GK104

GPU Name

NV42

-

GPU Variant

6800 XT

Kepler

Architecture

Curie

TSMC

Foundry

TSMC

28 nm

Process Size

110 nm

3.54 billion

Transistors

0.202 billion

294 mm²

Die Size

222 mm²

Graphics Features

12 (11_0)

DirectX

9.0c (9_3)

4.6

OpenGL

2.0 (full) 2.1 (partial)

3.0

OpenCL

N/A

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

3.0

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