NVIDIA GeForce GTX 660 vs NVIDIA GeForce RTX 3080

VS

NVIDIA GeForce GTX 660 NVIDIA GeForce RTX 3080

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 and 10GB VRAM GeForce RTX 3080 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 320W)

NVIDIA GeForce RTX 3080 's Advantages

Released 8 years late

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

More VRAM (10GB vs 2GB)

Larger VRAM bandwidth (760.3GB/s vs 144.2GB/s)

7744 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 660

1.981 TFLOPS

GeForce RTX 3080 +1402%

29.77 TFLOPS

3DMark Time Spy

GeForce GTX 660

1308

GeForce RTX 3080 +1255%

17724

GeForce GTX 660

VS

GeForce RTX 3080

Graphics Card

Sep 2012

Release Date

Sep 2020

GeForce 600

Generation

GeForce 30

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

980 MHz

Base Clock

1440 MHz

1032 MHz

Boost Clock

1710 MHz

1502 MHz

Memory Clock

1188 MHz

Memory

2GB

Memory Size

10GB

GDDR5

Memory Type

GDDR6X

192bit

Memory Bus

320bit

144.2GB/s

Bandwidth

760.3GB/s

Render Config

-

SM Count

68

-

Compute Units

-

960

Shading Units

8704

80

TMUs

272

24

ROPs

96

-

Tensor Cores

272

-

RT Cores

68

16 KB (per SMX)

L1 Cache

128 KB (per SM)

384 KB

L2 Cache

5 MB

Theoretical Performance

20.64 GPixel/s

Pixel Rate

164.2 GPixel/s

82.56 GTexel/s

Texture Rate

465.1 GTexel/s

-

FP16 (half)

29.77 TFLOPS

1.981 TFLOPS

FP32 (float)

29.77 TFLOPS

82.56 GFLOPS

FP64 (double)

465.1 GFLOPS

Graphics Processor

GK106

GPU Name

GA102

GK106-400-A1

GPU Variant

GA102-200-KD-A1

Kepler

Architecture

Ampere

TSMC

Foundry

Samsung

28 nm

Process Size

8 nm

2.54 billion

Transistors

28.3 billion

221 mm²

Die Size

628 mm²

Board Design

140W

TDP

320W

300 W

Suggested PSU

700 W

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

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

1x 6-pin

Power Connectors

1x 12-pin

Graphics Features

12 (11_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.3

3.0

CUDA

8.6

5.1

Shader Model

6.6

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