AMD Radeon RX 6900 XTX vs AMD Radeon RX 590

VS

AMD Radeon RX 6900 XTX

AMD Radeon RX 590

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6900 XTX and 8GB VRAM Radeon RX 590 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 58% (2435MHz vs 1545MHz)

More VRAM (16GB vs 8GB)

Larger VRAM bandwidth (576.0GB/s vs 256.0GB/s)

2816 additional rendering cores

AMD Radeon RX 590 's Advantages

Lower TDP (175W vs 330W)

Score

Benchmark

FP32 (float)

Radeon RX 6900 XTX +250%

24.93 TFLOPS

Radeon RX 590

7.119 TFLOPS

Radeon RX 6900 XTX

VS

Radeon RX 590

Graphics Card

Unknown

Release Date

Nov 2018

Navi II

Generation

Polaris

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

2075 MHz

Base Clock

1469 MHz

2435 MHz

Boost Clock

1545 MHz

2250 MHz

Memory Clock

2000 MHz

Memory

16GB

Memory Size

8GB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

256bit

576.0GB/s

Bandwidth

256.0GB/s

Render Config

80

Compute Units

36

-

5120

Shading Units

2304

320

TMUs

144

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

49.44 GPixel/s

779.2 GTexel/s

Texture Rate

222.5 GTexel/s

49.87 TFLOPS

FP16 (half)

7.119 TFLOPS

24.93 TFLOPS

FP32 (float)

7.119 TFLOPS

1.558 TFLOPS

FP64 (double)

445.0 GFLOPS

Board Design

330W

TDP

175W

700 W

Suggested PSU

450 W

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

Outputs

1x HDMI 2.0b 3x DisplayPort 1.4a

2x 8-pin

Power Connectors

1x 8-pin

Graphics Processor

Navi 21

GPU Name

Polaris 30

Navi 21 XTXH (215-121000247)

GPU Variant

Polaris 30 XT (215-0922006)

RDNA 2.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

7 nm

Process Size

12 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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