AMD Radeon RX 6800 vs NVIDIA GeForce RTX 5090

VS

AMD Radeon RX 6800

NVIDIA GeForce RTX 5090

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6800 and 32GB 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 's Advantages

Lower TDP (250W vs 500W)

NVIDIA GeForce RTX 5090 's Advantages

Released 4 years and 3 months late

Boost Clock has increased by 20% (2520MHz vs 2105MHz)

More VRAM (32GB vs 16GB)

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

17920 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6800

16.17 TFLOPS

GeForce RTX 5090 +578%

109.7 TFLOPS

Radeon RX 6800

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

1700 MHz

Base Clock

2235 MHz

2105 MHz

Boost Clock

2520 MHz

2000 MHz

Memory Clock

1875 MHz

Memory

16GB

Memory Size

32GB

GDDR6

Memory Type

GDDR7

256bit

Memory Bus

512bit

512.0GB/s

Bandwidth

1.52TB/s

Render Config

60

Compute Units

-

SM Count

170

3840

Shading Units

21760

240

TMUs

680

96

ROPs

192

-

Tensor Cores

680

60

RT Cores

170

128 KB per Array

L1 Cache

128 KB (per SM)

4 MB

L2 Cache

88 MB

128 MB

L3 Cache

-

Theoretical Performance

202.1 GPixel/s

Pixel Rate

483.8 GPixel/s

505.2 GTexel/s

Texture Rate

1714 GTexel/s

32.33 TFLOPS

FP16 (half)

109.7 TFLOPS

16.17 TFLOPS

FP32 (float)

109.7 TFLOPS

1010 GFLOPS

FP64 (double)

1.714 TFLOPS

Board Design

250W

TDP

500W

600 W

Suggested PSU

900 W

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

Outputs

1x HDMI 2.1 3x DisplayPort 2.1a

2x 8-pin

Power Connectors

1x 16-pin

Graphics Processor

Navi 21

GPU Name

GB202

Navi 21 XL (215-121000187)

GPU Variant

GB202-400-A1

RDNA 2.0

Architecture

Blackwell 2.0

TSMC

Foundry

TSMC

7 nm

Process Size

4 nm

26.8 billion

Transistors

Unknown

520 mm²

Die Size

Unknown

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

10.1

6.5

Shader Model

6.8

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