NVIDIA GeForce RTX 2080 vs NVIDIA GeForce GTX 660 Rev. 2

VS

NVIDIA GeForce RTX 2080 NVIDIA GeForce GTX 660 Rev. 2

We compared two Desktop platform GPUs: 8GB VRAM GeForce RTX 2080 and 2GB VRAM GeForce GTX 660 Rev. 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 2080 's Advantages

Released 4 years late

Boost Clock has increased by 66% (1710MHz vs 1032MHz)

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (448.0GB/s vs 144.2GB/s)

1984 additional rendering cores

NVIDIA GeForce GTX 660 Rev. 2 's Advantages

Lower TDP (140W vs 215W)

Score

Benchmark

FP32 (float)

GeForce RTX 2080 +408%

10.07 TFLOPS

GeForce GTX 660 Rev. 2

1.981 TFLOPS

GeForce RTX 2080

VS

GeForce GTX 660 Rev. 2

Graphics Card

Sep 2018

Release Date

Sep 2014

GeForce 20

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1515 MHz

Base Clock

980 MHz

1710 MHz

Boost Clock

1032 MHz

1750 MHz

Memory Clock

1502 MHz

Memory

8GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

192bit

448.0GB/s

Bandwidth

144.2GB/s

Render Config

46

SM Count

-

Compute Units

-

2944

Shading Units

960

184

TMUs

80

64

ROPs

24

368

Tensor Cores

-

46

RT Cores

-

64 KB (per SM)

L1 Cache

16 KB (per SMX)

4 MB

L2 Cache

384 KB

Theoretical Performance

109.4 GPixel/s

Pixel Rate

20.64 GPixel/s

314.6 GTexel/s

Texture Rate

82.56 GTexel/s

20.14 TFLOPS

FP16 (half)

-

10.07 TFLOPS

FP32 (float)

1.981 TFLOPS

314.6 GFLOPS

FP64 (double)

82.56 GFLOPS

Graphics Processor

TU104

GPU Name

GK104

TU104-400A-A1

GPU Variant

-

Turing

Architecture

Kepler

TSMC

Foundry

TSMC

12 nm

Process Size

28 nm

13.6 billion

Transistors

3.54 billion

545 mm²

Die Size

294 mm²

Board Design

215W

TDP

140W

550 W

Suggested PSU

300 W

1x HDMI 2.0 3x DisplayPort 1.4a 1x USB Type-C

Outputs

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

1x 6-pin + 1x 8-pin

Power Connectors

1x 6-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.3

Vulkan

1.1

7.5

CUDA

3.0

6.6

Shader Model

5.1

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