NVIDIA GeForce RTX 5090 vs AMD Radeon RX 6650 XT

VS

NVIDIA GeForce RTX 5090

AMD Radeon RX 6650 XT

We compared two Desktop platform GPUs: 32GB VRAM GeForce RTX 5090 and 8GB VRAM Radeon RX 6650 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 2 years and 8 months late

More VRAM (32GB vs 8GB)

Larger VRAM bandwidth (1.52TB/s vs 280.3GB/s)

19712 additional rendering cores

AMD Radeon RX 6650 XT 's Advantages

Boost Clock has increased by 5% (2635MHz vs 2520MHz)

Lower TDP (176W vs 500W)

Score

Benchmark

FP32 (float)

GeForce RTX 5090 +916%

109.7 TFLOPS

Radeon RX 6650 XT

10.79 TFLOPS

GeForce RTX 5090

VS

Radeon RX 6650 XT

Graphics Card

Jan 2025

Release Date

May 2022

GeForce 50

Generation

Navi II

Desktop

Type

Desktop

PCIe 5.0 x16

Bus Interface

PCIe 4.0 x8

Clock Speeds

2235 MHz

Base Clock

2055 MHz

2520 MHz

Boost Clock

2635 MHz

1875 MHz

Memory Clock

2190 MHz

Memory

32GB

Memory Size

8GB

GDDR7

Memory Type

GDDR6

512bit

Memory Bus

128bit

1.52TB/s

Bandwidth

280.3GB/s

Render Config

-

Compute Units

32

170

SM Count

-

21760

Shading Units

2048

680

TMUs

128

192

ROPs

64

680

Tensor Cores

-

170

RT Cores

32

128 KB (per SM)

L1 Cache

128 KB per Array

88 MB

L2 Cache

2 MB

-

L3 Cache

32 MB

Theoretical Performance

483.8 GPixel/s

Pixel Rate

168.6 GPixel/s

1714 GTexel/s

Texture Rate

337.3 GTexel/s

109.7 TFLOPS

FP16 (half)

21.59 TFLOPS

109.7 TFLOPS

FP32 (float)

10.79 TFLOPS

1.714 TFLOPS

FP64 (double)

674.6 GFLOPS

Board Design

500W

TDP

176W

900 W

Suggested PSU

450 W

1x HDMI 2.1 3x DisplayPort 2.1a

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

1x 16-pin

Power Connectors

1x 8-pin

Graphics Processor

GB202

GPU Name

Navi 23

GB202-400-A1

GPU Variant

Navi 23 KXT (215-130000136)

Blackwell 2.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

4 nm

Process Size

7 nm

Unknown

Transistors

11.06 billion

Unknown

Die Size

237 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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