AMD Radeon HD 6670 vs NVIDIA GeForce GTX 660 Ti

VS

AMD Radeon HD 6670

NVIDIA GeForce GTX 660 Ti

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6670 and 2GB VRAM GeForce GTX 660 Ti to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6670 's Advantages

Lower TDP (66W vs 150W)

NVIDIA GeForce GTX 660 Ti 's Advantages

Released 1 years and 4 months late

Boost Clock980MHz

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (144.2GB/s vs 64.00GB/s)

864 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6670

0.768 TFLOPS

GeForce GTX 660 Ti +242%

2.634 TFLOPS

Radeon HD 6670

VS

GeForce GTX 660 Ti

Graphics Card

Apr 2011

Release Date

Aug 2012

Northern Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

915 MHz

-

Boost Clock

980 MHz

1000 MHz

Memory Clock

1502 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

192bit

64.00GB/s

Bandwidth

144.2GB/s

Render Config

6

Compute Units

-

480

Shading Units

1344

24

TMUs

112

8

ROPs

24

-

8 KB (per CU)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

384 KB

-

Theoretical Performance

6.400 GPixel/s

Pixel Rate

27.44 GPixel/s

19.20 GTexel/s

Texture Rate

109.8 GTexel/s

-

768.0 GFLOPS

FP32 (float)

2.634 TFLOPS

-

FP64 (double)

109.8 GFLOPS

Board Design

66W

TDP

150W

250 W

Suggested PSU

450 W

1x DVI 1x HDMI 1.3a 1x VGA

Outputs

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

None

Power Connectors

2x 6-pin

Graphics Processor

Turks

GPU Name

GK104

Turks XT (215-0803000)

GPU Variant

GK104-300-KD-A2

TeraScale 2

Architecture

Kepler

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.716 billion

Transistors

3.54 billion

118 mm²

Die Size

294 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_0)

4.4

OpenGL

4.6

1.2

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.0

5.0

Shader Model

5.1

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