NVIDIA GeForce GTX 660 Ti vs AMD Radeon Sky 700

VS

NVIDIA GeForce GTX 660 Ti

AMD Radeon Sky 700

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Ti and 6GB VRAM Radeon Sky 700 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 Ti 's Advantages

Boost Clock980MHz

Lower TDP (150W vs 225W)

AMD Radeon Sky 700 's Advantages

Released 7 months late

More VRAM (6GB vs 2GB)

Larger VRAM bandwidth (264.0GB/s vs 144.2GB/s)

448 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 660 Ti

2.634 TFLOPS

Radeon Sky 700 +22%

3.226 TFLOPS

GeForce GTX 660 Ti

VS

Radeon Sky 700

Graphics Card

Aug 2012

Release Date

Mar 2013

GeForce 600

Generation

Radeon Sky

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

915 MHz

Base Clock

-

980 MHz

Boost Clock

-

1502 MHz

Memory Clock

1375 MHz

Memory

2GB

Memory Size

6GB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

384bit

144.2GB/s

Bandwidth

264.0GB/s

Render Config

-

Compute Units

28

-

1344

Shading Units

1792

112

TMUs

112

24

ROPs

32

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

768 KB

-

Theoretical Performance

27.44 GPixel/s

Pixel Rate

28.80 GPixel/s

109.8 GTexel/s

Texture Rate

100.8 GTexel/s

-

2.634 TFLOPS

FP32 (float)

3.226 TFLOPS

109.8 GFLOPS

FP64 (double)

806.4 GFLOPS

Board Design

150W

TDP

225W

450 W

Suggested PSU

550 W

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

Outputs

1x DisplayPort 1.2

2x 6-pin

Power Connectors

1x 8-pin

Graphics Processor

GK104

GPU Name

Tahiti

GK104-300-KD-A2

GPU Variant

Tahiti PRO GL

Kepler

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

3.54 billion

Transistors

4.313 billion

294 mm²

Die Size

352 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

3.0

OpenCL

1.2

1.1

Vulkan

1.2

3.0

CUDA

-

5.1

Shader Model

5.1

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