NVIDIA GeForce RTX 3090 vs NVIDIA GeForce RTX 5080

VS

NVIDIA GeForce RTX 3090

NVIDIA GeForce RTX 5080

We compared two Desktop platform GPUs: 24GB VRAM GeForce RTX 3090 and 16GB VRAM GeForce RTX 5080 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 3090 's Advantages

More VRAM (24GB vs 16GB)

NVIDIA GeForce RTX 5080 's Advantages

Released 4 years and 4 months late

Boost Clock has increased by 49% (2520MHz vs 1695MHz)

Larger VRAM bandwidth (973.8GB/s vs 936.2GB/s)

256 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce RTX 3090

35.58 TFLOPS

GeForce RTX 5080 +52%

54.19 TFLOPS

GeForce RTX 3090

VS

GeForce RTX 5080

Graphics Card

Sep 2020

Release Date

Jan 2025

GeForce 30

Generation

GeForce 50

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 5.0 x16

Clock Speeds

1395 MHz

Base Clock

2235 MHz

1695 MHz

Boost Clock

2520 MHz

1219 MHz

Memory Clock

2400 MHz

Memory

24GB

Memory Size

16GB

GDDR6X

Memory Type

GDDR7

384bit

Memory Bus

256bit

936.2GB/s

Bandwidth

973.8GB/s

Render Config

-

82

SM Count

84

10496

Shading Units

10752

328

TMUs

336

112

ROPs

128

328

Tensor Cores

336

82

RT Cores

84

128 KB (per SM)

L1 Cache

128 KB (per SM)

6 MB

L2 Cache

64 MB

-

Theoretical Performance

189.8 GPixel/s

Pixel Rate

322.6 GPixel/s

556.0 GTexel/s

Texture Rate

846.7 GTexel/s

35.58 TFLOPS

FP16 (half)

54.19 TFLOPS

35.58 TFLOPS

FP32 (float)

54.19 TFLOPS

556.0 GFLOPS

FP64 (double)

846.7 GFLOPS

Board Design

350W

TDP

350W

750 W

Suggested PSU

750 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

1x HDMI 2.1 3x DisplayPort 2.1a

1x 12-pin

Power Connectors

1x 16-pin

Graphics Processor

GA102

GPU Name

GB203

GA102-300-A1

GPU Variant

GB203-400-A1

Ampere

Architecture

Blackwell 2.0

Samsung

Foundry

TSMC

8 nm

Process Size

0

28.3 billion

Transistors

Unknown

628 mm²

Die Size

377 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

10.1

6.6

Shader Model

6.8

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