NVIDIA GeForce GTX 660 Rev. 2 vs AMD Radeon R9 Nano

VS

NVIDIA GeForce GTX 660 Rev. 2 AMD Radeon R9 Nano

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Rev. 2 and 4GB VRAM Radeon R9 Nano to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 Rev. 2 's Advantages

Boost Clock1032MHz

Lower TDP (140W vs 175W)

AMD Radeon R9 Nano 's Advantages

Released 11 months late

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (512.0GB/s vs 144.2GB/s)

3136 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 660 Rev. 2

1.981 TFLOPS

Radeon R9 Nano +313%

8.192 TFLOPS

GeForce GTX 660 Rev. 2

VS

Radeon R9 Nano

Graphics Card

Sep 2014

Release Date

Aug 2015

GeForce 600

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

980 MHz

Base Clock

-

1032 MHz

Boost Clock

-

1502 MHz

Memory Clock

500 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

HBM

192bit

Memory Bus

4096bit

144.2GB/s

Bandwidth

512.0GB/s

Render Config

-

SM Count

-

Compute Units

64

960

Shading Units

4096

80

TMUs

256

24

ROPs

64

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

2 MB

Theoretical Performance

20.64 GPixel/s

Pixel Rate

64.00 GPixel/s

82.56 GTexel/s

Texture Rate

256.0 GTexel/s

-

FP16 (half)

8.192 TFLOPS

1.981 TFLOPS

FP32 (float)

8.192 TFLOPS

82.56 GFLOPS

FP64 (double)

512.0 GFLOPS

Graphics Processor

GK104

GPU Name

Fiji

-

GPU Variant

Fiji XT CA (215-0862120)

Kepler

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

3.54 billion

Transistors

8.9 billion

294 mm²

Die Size

596 mm²

Board Design

140W

TDP

175W

300 W

Suggested PSU

450 W

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

Outputs

1x HDMI 1.4a 3x DisplayPort 1.2

1x 6-pin

Power Connectors

1x 8-pin

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

3.0

OpenCL

2.0

1.1

Vulkan

1.2

3.0

CUDA

-

5.1

Shader Model

6.3

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