AMD Radeon RX 6600 XT vs AMD Radeon RX 580 2048SP

VS

AMD Radeon RX 6600 XT AMD Radeon RX 580 2048SP

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 XT and 4GB VRAM Radeon RX 580 2048SP 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 2 years and 9 months late

Boost Clock has increased by 102% (2589MHz vs 1284MHz)

More VRAM (8GB vs 4GB)

Larger VRAM bandwidth (256.0GB/s vs 224.0GB/s)

AMD Radeon RX 580 2048SP 's Advantages

Lower TDP (150W vs 160W)

Score

Benchmark

FP32 (float)

Radeon RX 6600 XT +101%

10.6 TFLOPS

Radeon RX 580 2048SP

5.259 TFLOPS

3DMark Time Spy

Radeon RX 6600 XT +153%

9577

Radeon RX 580 2048SP

3775

Blender

Radeon RX 6600 XT +188%

1187

Radeon RX 580 2048SP

411

Radeon RX 6600 XT

VS

Radeon RX 580 2048SP

Graphics Card

Jul 2021

Release Date

Oct 2018

Navi II

Generation

Polaris

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

1968 MHz

Base Clock

1168 MHz

2589 MHz

Boost Clock

1284 MHz

2000 MHz

Memory Clock

1750 MHz

Memory

8GB

Memory Size

4GB

GDDR6

Memory Type

GDDR5

128bit

Memory Bus

256bit

256.0GB/s

Bandwidth

224.0GB/s

Render Config

-

SM Count

-

32

Compute Units

32

2048

Shading Units

2048

128

TMUs

128

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

41.09 GPixel/s

331.4 GTexel/s

Texture Rate

164.4 GTexel/s

21.21 TFLOPS

FP16 (half)

5.259 TFLOPS

10.60 TFLOPS

FP32 (float)

5.259 TFLOPS

662.8 GFLOPS

FP64 (double)

328.7 GFLOPS

Graphics Processor

Navi 23

GPU Name

Polaris 20

Navi 23 XT (215-130000006)

GPU Variant

Polaris 20 XL (215-0910052)

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

150W

450 W

Suggested PSU

450 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

1x DVI 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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