NVIDIA GeForce GTX 660 vs AMD Radeon HD 8670 OEM

VS

NVIDIA GeForce GTX 660

AMD Radeon HD 8670 OEM

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 and 2GB VRAM Radeon HD 8670 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 's Advantages

Larger VRAM bandwidth (144.2GB/s vs 73.60GB/s)

576 additional rendering cores

AMD Radeon HD 8670 OEM 's Advantages

Boost Clock has increased by 2% (1050MHz vs 1032MHz)

Lower TDP (75W vs 140W)

Score

Benchmark

FP32 (float)

GeForce GTX 660 +145%

1.981 TFLOPS

Radeon HD 8670 OEM

0.806 TFLOPS

GeForce GTX 660

VS

Radeon HD 8670 OEM

Graphics Card

Sep 2012

Release Date

Jan 2013

GeForce 600

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

980 MHz

Base Clock

1000 MHz

1032 MHz

Boost Clock

1050 MHz

1502 MHz

Memory Clock

1150 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

128bit

144.2GB/s

Bandwidth

73.60GB/s

Render Config

-

Compute Units

6

-

960

Shading Units

384

80

TMUs

24

ROPs

8

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

256 KB

-

Theoretical Performance

20.64 GPixel/s

Pixel Rate

8.400 GPixel/s

82.56 GTexel/s

Texture Rate

25.20 GTexel/s

-

1.981 TFLOPS

FP32 (float)

806.4 GFLOPS

82.56 GFLOPS

FP64 (double)

50.40 GFLOPS

Board Design

140W

TDP

75W

300 W

Suggested PSU

250 W

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

Outputs

1x DVI 1x HDMI 1.4a 1x VGA

1x 6-pin

Power Connectors

None

Graphics Processor

GK106

GPU Name

Oland

GK106-400-A1

GPU Variant

Oland XT (215-0837000)

Kepler

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.54 billion

Transistors

0.95 billion

221 mm²

Die Size

77 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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