AMD Radeon RX 6900 XTX vs AMD Radeon RX 550X

VS

AMD Radeon RX 6900 XTX

AMD Radeon RX 550X

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6900 XTX and 4GB VRAM Radeon RX 550X 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 106% (2435MHz vs 1183MHz)

More VRAM (16GB vs 4GB)

Larger VRAM bandwidth (576.0GB/s vs 96.00GB/s)

4608 additional rendering cores

AMD Radeon RX 550X 's Advantages

Lower TDP (50W vs 330W)

Score

Benchmark

FP32 (float)

Radeon RX 6900 XTX +1958%

24.93 TFLOPS

Radeon RX 550X

1.211 TFLOPS

Radeon RX 6900 XTX

VS

Radeon RX 550X

Graphics Card

Unknown

Release Date

Dec 2018

Navi II

Generation

Polaris

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

2075 MHz

Base Clock

1100 MHz

2435 MHz

Boost Clock

1183 MHz

2250 MHz

Memory Clock

1500 MHz

Memory

16GB

Memory Size

4GB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

128bit

576.0GB/s

Bandwidth

96.00GB/s

Render Config

80

Compute Units

8

-

5120

Shading Units

512

320

TMUs

32

128

ROPs

16

-

80

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

4 MB

L2 Cache

512 KB

128 MB

L3 Cache

-

Theoretical Performance

311.7 GPixel/s

Pixel Rate

18.93 GPixel/s

779.2 GTexel/s

Texture Rate

37.86 GTexel/s

49.87 TFLOPS

FP16 (half)

1211 GFLOPS

24.93 TFLOPS

FP32 (float)

1211 GFLOPS

1.558 TFLOPS

FP64 (double)

75.71 GFLOPS

Board Design

330W

TDP

50W

700 W

Suggested PSU

250 W

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

Outputs

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

2x 8-pin

Power Connectors

None

Graphics Processor

Navi 21

GPU Name

Lexa

Navi 21 XTXH (215-121000247)

GPU Variant

Lexa PRO (215-0904018)

RDNA 2.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

7 nm

Process Size

14 nm

26.8 billion

Transistors

2.2 billion

520 mm²

Die Size

103 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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