AMD Radeon RX 6900 XTX vs AMD Radeon RX 580 2048SP

VS

AMD Radeon RX 6900 XTX

AMD Radeon RX 580 2048SP

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6900 XTX 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 6900 XTX 's Advantages

Boost Clock has increased by 90% (2435MHz vs 1284MHz)

More VRAM (16GB vs 4GB)

Larger VRAM bandwidth (576.0GB/s vs 224.0GB/s)

3072 additional rendering cores

AMD Radeon RX 580 2048SP 's Advantages

Lower TDP (150W vs 330W)

Score

Benchmark

FP32 (float)

Radeon RX 6900 XTX +374%

24.93 TFLOPS

Radeon RX 580 2048SP

5.259 TFLOPS

Radeon RX 6900 XTX

VS

Radeon RX 580 2048SP

Graphics Card

Unknown

Release Date

Oct 2018

Navi II

Generation

Polaris

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

2075 MHz

Base Clock

1168 MHz

2435 MHz

Boost Clock

1284 MHz

2250 MHz

Memory Clock

1750 MHz

Memory

16GB

Memory Size

4GB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

256bit

576.0GB/s

Bandwidth

224.0GB/s

Render Config

80

Compute Units

32

-

5120

Shading Units

2048

320

TMUs

128

ROPs

32

-

80

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

4 MB

L2 Cache

2 MB

128 MB

L3 Cache

-

Theoretical Performance

311.7 GPixel/s

Pixel Rate

41.09 GPixel/s

779.2 GTexel/s

Texture Rate

164.4 GTexel/s

49.87 TFLOPS

FP16 (half)

5.259 TFLOPS

24.93 TFLOPS

FP32 (float)

5.259 TFLOPS

1.558 TFLOPS

FP64 (double)

328.7 GFLOPS

Board Design

330W

TDP

150W

700 W

Suggested PSU

450 W

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

Outputs

1x DVI 1x HDMI 2.0b 3x DisplayPort 1.4a

2x 8-pin

Power Connectors

1x 8-pin

Graphics Processor

Navi 21

GPU Name

Polaris 20

Navi 21 XTXH (215-121000247)

GPU Variant

Polaris 20 XL (215-0910052)

RDNA 2.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

7 nm

Process Size

14 nm

26.8 billion

Transistors

5.7 billion

520 mm²

Die Size

232 mm²

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

-

6.5

Shader Model

6.4

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