AMD Radeon RX 6600 XT vs AMD Radeon RX 580X

VS

AMD Radeon RX 6600 XT AMD Radeon RX 580X

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 XT and 8GB VRAM Radeon RX 580X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6600 XT 's Advantages

Released 3 years and 3 months late

Boost Clock has increased by 93% (2589MHz vs 1340MHz)

Lower TDP (160W vs 185W)

AMD Radeon RX 580X 's Advantages

256 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6600 XT +71%

10.6 TFLOPS

Radeon RX 580X

6.175 TFLOPS

Radeon RX 6600 XT

VS

Radeon RX 580X

Graphics Card

Jul 2021

Release Date

Apr 2018

Navi II

Generation

Polaris

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

1968 MHz

Base Clock

1257 MHz

2589 MHz

Boost Clock

1340 MHz

2000 MHz

Memory Clock

2000 MHz

Memory

8GB

Memory Size

8GB

GDDR6

Memory Type

GDDR5

128bit

Memory Bus

256bit

256.0GB/s

Bandwidth

256.0GB/s

Render Config

-

SM Count

-

32

Compute Units

36

2048

Shading Units

2304

128

TMUs

144

64

ROPs

32

-

Tensor Cores

-

32

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

2 MB

Theoretical Performance

165.7 GPixel/s

Pixel Rate

42.88 GPixel/s

331.4 GTexel/s

Texture Rate

193.0 GTexel/s

21.21 TFLOPS

FP16 (half)

6.175 TFLOPS

10.60 TFLOPS

FP32 (float)

6.175 TFLOPS

662.8 GFLOPS

FP64 (double)

385.9 GFLOPS

Graphics Processor

Navi 23

GPU Name

Polaris 20

Navi 23 XT (215-130000006)

GPU Variant

Polaris 20 XTX (215-0910038)

RDNA 2.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

7 nm

Process Size

14 nm

11.06 billion

Transistors

5.7 billion

237 mm²

Die Size

232 mm²

Board Design

160W

TDP

185W

450 W

Suggested PSU

450 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

1x HDMI 2.0b 3x DisplayPort 1.4a

1x 8-pin

Power Connectors

1x 8-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1

OpenCL

2.1

1.3

Vulkan

1.2

-

CUDA

-

6.7

Shader Model

6.4

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