AMD Radeon RX 580G vs AMD Radeon RX 6900 XT

VS

AMD Radeon RX 580G

AMD Radeon RX 6900 XT

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 580G and 16GB VRAM Radeon RX 6900 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 580G 's Advantages

Lower TDP (185W vs 300W)

AMD Radeon RX 6900 XT 's Advantages

Released 2 years late

Boost Clock has increased by 69% (2250MHz vs 1330MHz)

More VRAM (16GB vs 8GB)

Larger VRAM bandwidth (512.0GB/s vs 256.0GB/s)

2816 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 580G

6.129 TFLOPS

Radeon RX 6900 XT +275%

23.04 TFLOPS

Radeon RX 580G

VS

Radeon RX 6900 XT

Graphics Card

Oct 2018

Release Date

Oct 2020

Polaris

Generation

Navi II

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

1257 MHz

Base Clock

1825 MHz

1330 MHz

Boost Clock

2250 MHz

2000 MHz

Memory Clock

2000 MHz

Memory

8GB

Memory Size

16GB

GDDR5

Memory Type

GDDR6

256bit

Memory Bus

256bit

256.0GB/s

Bandwidth

512.0GB/s

Render Config

36

Compute Units

80

-

2304

Shading Units

5120

144

TMUs

320

32

ROPs

128

-

RT Cores

80

16 KB (per CU)

L1 Cache

128 KB per Array

2 MB

L2 Cache

4 MB

-

L3 Cache

128 MB

Theoretical Performance

42.56 GPixel/s

Pixel Rate

288.0 GPixel/s

191.5 GTexel/s

Texture Rate

720.0 GTexel/s

6.129 TFLOPS

FP16 (half)

46.08 TFLOPS

6.129 TFLOPS

FP32 (float)

23.04 TFLOPS

383.0 GFLOPS

FP64 (double)

1440 GFLOPS

Board Design

185W

TDP

300W

450 W

Suggested PSU

700 W

1x HDMI 2.0b 3x DisplayPort 1.4a

Outputs

1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C

1x 8-pin

Power Connectors

2x 8-pin

Graphics Processor

Polaris 20

GPU Name

Navi 21

Polaris 20 XTX (215-0910038)

GPU Variant

Navi 21 XTX (215-121000167)

GCN 4.0

Architecture

RDNA 2.0

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

7 nm

5.7 billion

Transistors

26.8 billion

232 mm²

Die Size

520 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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