NVIDIA GeForce RTX 3080 Ti 20 GB vs NVIDIA GeForce RTX 3090 Ti

VS

NVIDIA GeForce RTX 3080 Ti 20 GB

NVIDIA GeForce RTX 3090 Ti

We compared two Desktop platform GPUs: 20GB VRAM GeForce RTX 3080 Ti 20 GB and 24GB VRAM GeForce RTX 3090 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

Lower TDP (350W vs 450W)

NVIDIA GeForce RTX 3090 Ti 's Advantages

Boost Clock has increased by 12% (1860MHz vs 1665MHz)

More VRAM (24GB vs 20GB)

Larger VRAM bandwidth (1008GB/s vs 760.3GB/s)

512 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce RTX 3080 Ti 20 GB

34.1 TFLOPS

GeForce RTX 3090 Ti +17%

40 TFLOPS

Blender

GeForce RTX 3080 Ti 20 GB

5956

GeForce RTX 3090 Ti +4%

6200

OctaneBench

GeForce RTX 3080 Ti 20 GB

641

GeForce RTX 3090 Ti +1%

649

GeForce RTX 3080 Ti 20 GB

VS

GeForce RTX 3090 Ti

Graphics Card

Jan 2022

Release Date

Jan 2022

GeForce 30

Generation

GeForce 30

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

1335 MHz

Base Clock

1560 MHz

1665 MHz

Boost Clock

1860 MHz

1188 MHz

Memory Clock

1313 MHz

Memory

20GB

Memory Size

24GB

GDDR6X

Memory Type

GDDR6X

320bit

Memory Bus

384bit

760.3GB/s

Bandwidth

1008GB/s

Render Config

-

80

SM Count

84

10240

Shading Units

10752

320

TMUs

336

112

ROPs

112

320

Tensor Cores

336

80

RT Cores

84

128 KB (per SM)

L1 Cache

128 KB (per SM)

6 MB

L2 Cache

6 MB

-

Theoretical Performance

186.5 GPixel/s

Pixel Rate

208.3 GPixel/s

532.8 GTexel/s

Texture Rate

625.0 GTexel/s

34.10 TFLOPS

FP16 (half)

40.00 TFLOPS

34.10 TFLOPS

FP32 (float)

40.00 TFLOPS

532.8 GFLOPS

FP64 (double)

625.0 GFLOPS

Board Design

350W

TDP

450W

750 W

Suggested PSU

850 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

1x 12-pin

Power Connectors

1x 16-pin

Graphics Processor

GA102

GPU Name

GA102

GA102-225-A1

GPU Variant

GA102-350-A1

Ampere

Architecture

Ampere

Samsung

Foundry

Samsung

8 nm

Process Size

8 nm

28.3 billion

Transistors

28.3 billion

628 mm²

Die Size

628 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.3

Vulkan

1.3

8.6

CUDA

8.6

6.6

Shader Model

6.6

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