NVIDIA GeForce GTX 660 vs NVIDIA GeForce 8800 Ultra

VS

NVIDIA GeForce GTX 660

NVIDIA GeForce 8800 Ultra

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 and 768MB VRAM GeForce 8800 Ultra to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 's Advantages

Released 5 years and 4 months late

Boost Clock1032MHz

More VRAM (2GB vs 768GB)

Larger VRAM bandwidth (144.2GB/s vs 103.7GB/s)

832 additional rendering cores

Lower TDP (140W vs 171W)

Score

Benchmark

FP32 (float)

GeForce GTX 660 +411%

1.981 TFLOPS

GeForce 8800 Ultra

0.387 TFLOPS

GeForce GTX 660

VS

GeForce 8800 Ultra

Graphics Card

Sep 2012

Release Date

May 2007

GeForce 600

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

980 MHz

Base Clock

-

1032 MHz

Boost Clock

-

1502 MHz

Memory Clock

1080 MHz

Memory

2GB

Memory Size

768MB

GDDR5

Memory Type

GDDR3

192bit

Memory Bus

384bit

144.2GB/s

Bandwidth

103.7GB/s

Render Config

-

SM Count

16

960

Shading Units

128

80

TMUs

32

24

ROPs

24

-

16 KB (per SMX)

L1 Cache

-

384 KB

L2 Cache

96 KB

-

Theoretical Performance

20.64 GPixel/s

Pixel Rate

14.69 GPixel/s

82.56 GTexel/s

Texture Rate

39.17 GTexel/s

-

1.981 TFLOPS

FP32 (float)

387.1 GFLOPS

82.56 GFLOPS

FP64 (double)

-

Board Design

140W

TDP

171W

300 W

Suggested PSU

450 W

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

Outputs

2x DVI 1x S-Video

1x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

GK106

GPU Name

G80

GK106-400-A1

GPU Variant

G80-450-A3

Kepler

Architecture

Tesla

TSMC

Foundry

TSMC

28 nm

Process Size

90 nm

2.54 billion

Transistors

0.681 billion

221 mm²

Die Size

484 mm²

Graphics Features

12 (11_0)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

3.0

OpenCL

1.1 (1.0)

1.1

Vulkan

N/A

3.0

CUDA

1.0

5.1

Shader Model

4.0

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