AMD Radeon RX 580X vs AMD Radeon RX 6650 XT

VS

AMD Radeon RX 580X

AMD Radeon RX 6650 XT

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 580X and 8GB VRAM Radeon RX 6650 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 580X 's Advantages

256 additional rendering cores

AMD Radeon RX 6650 XT 's Advantages

Released 4 years and 1 months late

Boost Clock has increased by 97% (2635MHz vs 1340MHz)

Larger VRAM bandwidth (280.3GB/s vs 256.0GB/s)

Lower TDP (176W vs 185W)

Score

Benchmark

FP32 (float)

Radeon RX 580X

6.175 TFLOPS

Radeon RX 6650 XT +74%

10.79 TFLOPS

Radeon RX 580X

VS

Radeon RX 6650 XT

Graphics Card

Apr 2018

Release Date

May 2022

Polaris

Generation

Navi II

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x8

Clock Speeds

1257 MHz

Base Clock

2055 MHz

1340 MHz

Boost Clock

2635 MHz

2000 MHz

Memory Clock

2190 MHz

Memory

8GB

Memory Size

8GB

GDDR5

Memory Type

GDDR6

256bit

Memory Bus

128bit

256.0GB/s

Bandwidth

280.3GB/s

Render Config

36

Compute Units

32

-

2304

Shading Units

2048

144

TMUs

128

32

ROPs

64

-

RT Cores

32

16 KB (per CU)

L1 Cache

128 KB per Array

2 MB

L2 Cache

2 MB

-

L3 Cache

32 MB

Theoretical Performance

42.88 GPixel/s

Pixel Rate

168.6 GPixel/s

193.0 GTexel/s

Texture Rate

337.3 GTexel/s

6.175 TFLOPS

FP16 (half)

21.59 TFLOPS

6.175 TFLOPS

FP32 (float)

10.79 TFLOPS

385.9 GFLOPS

FP64 (double)

674.6 GFLOPS

Board Design

185W

TDP

176W

450 W

Suggested PSU

450 W

1x HDMI 2.0b 3x DisplayPort 1.4a

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

1x 8-pin

Power Connectors

1x 8-pin

Graphics Processor

Polaris 20

GPU Name

Navi 23

Polaris 20 XTX (215-0910038)

GPU Variant

Navi 23 KXT (215-130000136)

GCN 4.0

Architecture

RDNA 2.0

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

7 nm

5.7 billion

Transistors

11.06 billion

232 mm²

Die Size

237 mm²

Graphics Features

12 (12_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.1

OpenCL

2.1

1.2

Vulkan

1.3

-

6.4

Shader Model

6.5

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