NVIDIA GeForce GTX 660 vs AMD Radeon RX 580X

VS

NVIDIA GeForce GTX 660

AMD Radeon RX 580X

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 and 8GB VRAM Radeon RX 580X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 's Advantages

Lower TDP (140W vs 185W)

AMD Radeon RX 580X 's Advantages

Released 5 years and 7 months late

Boost Clock has increased by 30% (1340MHz vs 1032MHz)

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (256.0GB/s vs 144.2GB/s)

1344 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 660

1.981 TFLOPS

Radeon RX 580X +211%

6.175 TFLOPS

GeForce GTX 660

VS

Radeon RX 580X

Graphics Card

Sep 2012

Release Date

Apr 2018

GeForce 600

Generation

Polaris

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

980 MHz

Base Clock

1257 MHz

1032 MHz

Boost Clock

1340 MHz

1502 MHz

Memory Clock

2000 MHz

Memory

2GB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

256bit

144.2GB/s

Bandwidth

256.0GB/s

Render Config

-

Compute Units

36

-

960

Shading Units

2304

80

TMUs

144

24

ROPs

32

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

2 MB

-

Theoretical Performance

20.64 GPixel/s

Pixel Rate

42.88 GPixel/s

82.56 GTexel/s

Texture Rate

193.0 GTexel/s

-

FP16 (half)

6.175 TFLOPS

1.981 TFLOPS

FP32 (float)

6.175 TFLOPS

82.56 GFLOPS

FP64 (double)

385.9 GFLOPS

Board Design

140W

TDP

185W

300 W

Suggested PSU

450 W

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

Outputs

1x HDMI 2.0b 3x DisplayPort 1.4a

1x 6-pin

Power Connectors

1x 8-pin

Graphics Processor

GK106

GPU Name

Polaris 20

GK106-400-A1

GPU Variant

Polaris 20 XTX (215-0910038)

Kepler

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

2.54 billion

Transistors

5.7 billion

221 mm²

Die Size

232 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

3.0

OpenCL

2.1

1.1

Vulkan

1.2

3.0

CUDA

-

5.1

Shader Model

6.4

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