NVIDIA GeForce GTX 660 vs ATI Radeon HD 2600 PRO

VS

NVIDIA GeForce GTX 660

ATI Radeon HD 2600 PRO

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 and 256MB VRAM ATI Radeon HD 2600 PRO 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 3 months late

Boost Clock1032MHz

More VRAM (2GB vs 256GB)

Larger VRAM bandwidth (144.2GB/s vs 16.00GB/s)

840 additional rendering cores

ATI Radeon HD 2600 PRO 's Advantages

Lower TDP (35W vs 140W)

Score

Benchmark

FP32 (float)

GeForce GTX 660 +1275%

1.981 TFLOPS

ATI Radeon HD 2600 PRO

0.144 TFLOPS

GeForce GTX 660

VS

ATI Radeon HD 2600 PRO

Graphics Card

Sep 2012

Release Date

Jun 2007

GeForce 600

Generation

Radeon R600

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

500 MHz

Memory

2GB

Memory Size

256MB

GDDR5

Memory Type

DDR2

192bit

Memory Bus

128bit

144.2GB/s

Bandwidth

16.00GB/s

Render Config

-

Compute Units

3

-

960

Shading Units

120

80

TMUs

8

24

ROPs

4

-

16 KB (per SMX)

L1 Cache

-

384 KB

L2 Cache

64 KB

-

Theoretical Performance

20.64 GPixel/s

Pixel Rate

2.400 GPixel/s

82.56 GTexel/s

Texture Rate

4.800 GTexel/s

-

1.981 TFLOPS

FP32 (float)

144.0 GFLOPS

82.56 GFLOPS

FP64 (double)

-

Board Design

140W

TDP

35W

300 W

Suggested PSU

200 W

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

Outputs

2x DVI 1x S-Video

1x 6-pin

Power Connectors

None

Graphics Processor

GK106

GPU Name

RV630

GK106-400-A1

GPU Variant

RV630 PRO (215CDBBKA15FG)

Kepler

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

65 nm

2.54 billion

Transistors

0.39 billion

221 mm²

Die Size

153 mm²

Graphics Features

12 (11_0)

DirectX

10.0 (10_0)

4.6

OpenGL

3.3

3.0

OpenCL

N/A

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

4.0

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