NVIDIA GeForce GTX 660 Ti vs ATI Radeon HD 2600 XT Mac Edition

VS

NVIDIA GeForce GTX 660 Ti

ATI Radeon HD 2600 XT Mac Edition

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Ti and 256MB VRAM Radeon HD 2600 XT Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 Ti 's Advantages

Released 4 years and 6 months late

Boost Clock980MHz

More VRAM (2GB vs 256GB)

Larger VRAM bandwidth (144.2GB/s vs 25.60GB/s)

1224 additional rendering cores

ATI Radeon HD 2600 XT Mac Edition 's Advantages

Lower TDP (45W vs 150W)

Score

Benchmark

FP32 (float)

GeForce GTX 660 Ti +1467%

2.634 TFLOPS

Radeon HD 2600 XT Mac Edition

0.168 TFLOPS

GeForce GTX 660 Ti

VS

Radeon HD 2600 XT Mac Edition

Graphics Card

Aug 2012

Release Date

Feb 2008

GeForce 600

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

915 MHz

Base Clock

-

980 MHz

Boost Clock

-

1502 MHz

Memory Clock

800 MHz

Memory

2GB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

192bit

Memory Bus

128bit

144.2GB/s

Bandwidth

25.60GB/s

Render Config

-

Compute Units

3

-

1344

Shading Units

120

112

TMUs

8

24

ROPs

4

-

16 KB (per SMX)

L1 Cache

-

384 KB

L2 Cache

64 KB

-

Theoretical Performance

27.44 GPixel/s

Pixel Rate

2.800 GPixel/s

109.8 GTexel/s

Texture Rate

5.600 GTexel/s

-

2.634 TFLOPS

FP32 (float)

168.0 GFLOPS

109.8 GFLOPS

FP64 (double)

-

Board Design

150W

TDP

45W

450 W

Suggested PSU

200 W

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

Outputs

2x DVI

2x 6-pin

Power Connectors

None

Graphics Processor

GK104

GPU Name

RV630

GK104-300-KD-A2

GPU Variant

-

Kepler

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

65 nm

3.54 billion

Transistors

0.39 billion

294 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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