AMD Radeon RX 6600 XT vs ATI Radeon HD 4580

VS

AMD Radeon RX 6600 XT

ATI Radeon HD 4580

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 XT and 512MB VRAM Radeon HD 4580 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 9 years and 8 months late

Boost Clock2589MHz

More VRAM (8GB vs 512GB)

Larger VRAM bandwidth (256.0GB/s vs 22.18GB/s)

1928 additional rendering cores

ATI Radeon HD 4580 's Advantages

Lower TDP (65W vs 160W)

Score

Benchmark

FP32 (float)

Radeon RX 6600 XT +5449%

10.6 TFLOPS

Radeon HD 4580

0.191 TFLOPS

Radeon RX 6600 XT

VS

Radeon HD 4580

Graphics Card

Jul 2021

Release Date

Nov 2011

Navi II

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

1968 MHz

Base Clock

-

2589 MHz

Boost Clock

-

2000 MHz

Memory Clock

693 MHz

Memory

8GB

Memory Size

512MB

GDDR6

Memory Type

GDDR3

128bit

Memory Bus

128bit

256.0GB/s

Bandwidth

22.18GB/s

Render Config

32

Compute Units

3

-

2048

Shading Units

120

128

TMUs

8

64

ROPs

4

-

32

RT Cores

-

128 KB per Array

L1 Cache

-

2 MB

L2 Cache

128 KB

32 MB

L3 Cache

-

Theoretical Performance

165.7 GPixel/s

Pixel Rate

3.184 GPixel/s

331.4 GTexel/s

Texture Rate

6.368 GTexel/s

21.21 TFLOPS

FP16 (half)

-

10.60 TFLOPS

FP32 (float)

191.0 GFLOPS

662.8 GFLOPS

FP64 (double)

-

Board Design

160W

TDP

65W

450 W

Suggested PSU

250 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

2x DVI 1x S-Video

1x 8-pin

Power Connectors

None

Graphics Processor

Navi 23

GPU Name

RV635

Navi 23 XT (215-130000006)

GPU Variant

RV635 PRO (215-0682008)

RDNA 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

7 nm

Process Size

55 nm

11.06 billion

Transistors

0.378 billion

237 mm²

Die Size

135 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

2.1

OpenCL

N/A

1.3

Vulkan

N/A

-

6.7

Shader Model

4.1

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