NVIDIA GeForce RTX 5090 vs AMD Radeon RX 6900 XT

VS

NVIDIA GeForce RTX 5090

AMD Radeon RX 6900 XT

We compared two Desktop platform GPUs: 32GB VRAM GeForce RTX 5090 and 16GB VRAM Radeon RX 6900 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 5090 's Advantages

Released 4 years and 3 months late

Boost Clock has increased by 12% (2520MHz vs 2250MHz)

More VRAM (32GB vs 16GB)

Larger VRAM bandwidth (1.52TB/s vs 512.0GB/s)

16640 additional rendering cores

AMD Radeon RX 6900 XT 's Advantages

Lower TDP (300W vs 500W)

Score

Benchmark

FP32 (float)

GeForce RTX 5090 +376%

109.7 TFLOPS

Radeon RX 6900 XT

23.04 TFLOPS

GeForce RTX 5090

VS

Radeon RX 6900 XT

Graphics Card

Jan 2025

Release Date

Oct 2020

GeForce 50

Generation

Navi II

Desktop

Type

Desktop

PCIe 5.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

2235 MHz

Base Clock

1825 MHz

2520 MHz

Boost Clock

2250 MHz

1875 MHz

Memory Clock

2000 MHz

Memory

32GB

Memory Size

16GB

GDDR7

Memory Type

GDDR6

512bit

Memory Bus

256bit

1.52TB/s

Bandwidth

512.0GB/s

Render Config

-

Compute Units

80

170

SM Count

-

21760

Shading Units

5120

680

TMUs

320

192

ROPs

128

680

Tensor Cores

-

170

RT Cores

80

128 KB (per SM)

L1 Cache

128 KB per Array

88 MB

L2 Cache

4 MB

-

L3 Cache

128 MB

Theoretical Performance

483.8 GPixel/s

Pixel Rate

288.0 GPixel/s

1714 GTexel/s

Texture Rate

720.0 GTexel/s

109.7 TFLOPS

FP16 (half)

46.08 TFLOPS

109.7 TFLOPS

FP32 (float)

23.04 TFLOPS

1.714 TFLOPS

FP64 (double)

1440 GFLOPS

Board Design

500W

TDP

300W

900 W

Suggested PSU

700 W

1x HDMI 2.1 3x DisplayPort 2.1a

Outputs

1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C

1x 16-pin

Power Connectors

2x 8-pin

Graphics Processor

GB202

GPU Name

Navi 21

GB202-400-A1

GPU Variant

Navi 21 XTX (215-121000167)

Blackwell 2.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

4 nm

Process Size

7 nm

Unknown

Transistors

26.8 billion

Unknown

Die Size

520 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

3.0

OpenCL

2.1

1.3

Vulkan

1.3

10.1

CUDA

-

6.8

Shader Model

6.5

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