AMD Radeon RX 6800 XT vs NVIDIA GeForce RTX 5090

VS

AMD Radeon RX 6800 XT NVIDIA GeForce RTX 5090

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6800 XT and 28GB VRAM GeForce RTX 5090 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6800 XT 's Advantages

Larger VRAM bandwidth (512.0GB/s vs 280.0GB/s)

Lower TDP (300W vs 500W)

NVIDIA GeForce RTX 5090 's Advantages

Released 4 years and 3 months late

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

More VRAM (28GB vs 16GB)

15872 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6800 XT

20.74 TFLOPS

GeForce RTX 5090 +397%

103.2 TFLOPS

Radeon RX 6800 XT

VS

GeForce RTX 5090

Graphics Card

Oct 2020

Release Date

Jan 2025

Navi II

Generation

GeForce 50

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 5.0 x16

Clock Speeds

1825 MHz

Base Clock

2235 MHz

2250 MHz

Boost Clock

2520 MHz

2000 MHz

Memory Clock

2500 MHz

Memory

16GB

Memory Size

28GB

GDDR6

Memory Type

GDDR7

256bit

Memory Bus

448bit

512.0GB/s

Bandwidth

280.0GB/s

Render Config

-

SM Count

160

72

Compute Units

-

4608

Shading Units

20480

288

TMUs

640

128

ROPs

192

-

Tensor Cores

640

72

RT Cores

160

128 KB per Array

L1 Cache

128 KB (per SM)

4 MB

L2 Cache

88 MB

Theoretical Performance

288.0 GPixel/s

Pixel Rate

483.8 GPixel/s

648.0 GTexel/s

Texture Rate

1613 GTexel/s

41.47 TFLOPS

FP16 (half)

103.2 TFLOPS

20.74 TFLOPS

FP32 (float)

103.2 TFLOPS

1296 GFLOPS

FP64 (double)

1.613 TFLOPS

Graphics Processor

Navi 21

GPU Name

GB202

Navi 21 XT (215-121000177)

GPU Variant

GB202

RDNA 2.0

Architecture

Blackwell 2.0

TSMC

Foundry

TSMC

7 nm

Process Size

0 nm

26.8 billion

Transistors

Unknown

520 mm²

Die Size

Unknown

Board Design

300W

TDP

500W

700 W

Suggested PSU

900 W

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

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

2x 8-pin

Power Connectors

1x 16-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.1

OpenCL

3.0

1.3

Vulkan

1.3

-

CUDA

9.1

6.5

Shader Model

6.7

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