NVIDIA GeForce RTX 3080 Ti 20 GB vs NVIDIA GeForce GTX 660 Ti

VS

NVIDIA GeForce RTX 3080 Ti 20 GB

NVIDIA GeForce GTX 660 Ti

We compared two Desktop platform GPUs: 20GB VRAM GeForce RTX 3080 Ti 20 GB and 2GB VRAM GeForce GTX 660 Ti to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 3080 Ti 20 GB 's Advantages

Released 9 years and 5 months late

Boost Clock has increased by 70% (1665MHz vs 980MHz)

More VRAM (20GB vs 2GB)

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

8896 additional rendering cores

NVIDIA GeForce GTX 660 Ti 's Advantages

Lower TDP (150W vs 350W)

Score

Benchmark

FP32 (float)

GeForce RTX 3080 Ti 20 GB +1194%

34.1 TFLOPS

GeForce GTX 660 Ti

2.634 TFLOPS

Blender

GeForce RTX 3080 Ti 20 GB +3979%

5956

GeForce GTX 660 Ti

146

OctaneBench

GeForce RTX 3080 Ti 20 GB +2952%

641

GeForce GTX 660 Ti

21

GeForce RTX 3080 Ti 20 GB

VS

GeForce GTX 660 Ti

Graphics Card

Jan 2022

Release Date

Aug 2012

GeForce 30

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1335 MHz

Base Clock

915 MHz

1665 MHz

Boost Clock

980 MHz

1188 MHz

Memory Clock

1502 MHz

Memory

20GB

Memory Size

2GB

GDDR6X

Memory Type

GDDR5

320bit

Memory Bus

192bit

760.3GB/s

Bandwidth

144.2GB/s

Render Config

-

80

SM Count

-

10240

Shading Units

1344

320

TMUs

112

ROPs

24

320

Tensor Cores

-

80

RT Cores

-

128 KB (per SM)

L1 Cache

16 KB (per SMX)

6 MB

L2 Cache

384 KB

-

Theoretical Performance

186.5 GPixel/s

Pixel Rate

27.44 GPixel/s

532.8 GTexel/s

Texture Rate

109.8 GTexel/s

34.10 TFLOPS

FP16 (half)

-

34.10 TFLOPS

FP32 (float)

2.634 TFLOPS

532.8 GFLOPS

FP64 (double)

109.8 GFLOPS

Board Design

350W

TDP

150W

750 W

Suggested PSU

450 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

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

1x 12-pin

Power Connectors

2x 6-pin

Graphics Processor

GA102

GPU Name

GK104

GA102-225-A1

GPU Variant

GK104-300-KD-A2

Ampere

Architecture

Kepler

Samsung

Foundry

TSMC

8 nm

Process Size

28 nm

28.3 billion

Transistors

3.54 billion

628 mm²

Die Size

294 mm²

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

8.6

CUDA

3.0

6.6

Shader Model

5.1

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