NVIDIA GeForce GTX 660 vs AMD Radeon RX Vega 56

VS

NVIDIA GeForce GTX 660

AMD Radeon RX Vega 56

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 and 8GB VRAM Radeon RX Vega 56 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 210W)

AMD Radeon RX Vega 56 's Advantages

Released 4 years and 11 months late

Boost Clock has increased by 43% (1471MHz vs 1032MHz)

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (409.6GB/s vs 144.2GB/s)

2624 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 660

1.981 TFLOPS

Radeon RX Vega 56 +432%

10.54 TFLOPS

3DMark Time Spy

GeForce GTX 660

1308

Radeon RX Vega 56 +425%

6878

GeForce GTX 660

VS

Radeon RX Vega 56

Graphics Card

Sep 2012

Release Date

Aug 2017

GeForce 600

Generation

Vega

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

980 MHz

Base Clock

1156 MHz

1032 MHz

Boost Clock

1471 MHz

1502 MHz

Memory Clock

800 MHz

Memory

2GB

Memory Size

8GB

GDDR5

Memory Type

HBM2

192bit

Memory Bus

2048bit

144.2GB/s

Bandwidth

409.6GB/s

Render Config

-

Compute Units

56

-

960

Shading Units

3584

80

TMUs

224

24

ROPs

64

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

4 MB

-

Theoretical Performance

20.64 GPixel/s

Pixel Rate

94.14 GPixel/s

82.56 GTexel/s

Texture Rate

329.5 GTexel/s

-

FP16 (half)

21.09 TFLOPS

1.981 TFLOPS

FP32 (float)

10.54 TFLOPS

82.56 GFLOPS

FP64 (double)

659.0 GFLOPS

Board Design

140W

TDP

210W

300 W

Suggested PSU

550 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

2x 8-pin

Graphics Processor

GK106

GPU Name

Vega 10

GK106-400-A1

GPU Variant

Vega 10 XL (215-0894216)

Kepler

Architecture

GCN 5.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

2.54 billion

Transistors

12.5 billion

221 mm²

Die Size

495 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_1)

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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