AMD Radeon RX 550X vs AMD Radeon RX 6900 XT

VS

AMD Radeon RX 550X AMD Radeon RX 6900 XT

We compared two Desktop platform GPUs: 4GB VRAM Radeon RX 550X 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 550X 's Advantages

Lower TDP (50W vs 300W)

AMD Radeon RX 6900 XT 's Advantages

Released 1 years and 10 months late

Boost Clock has increased by 90% (2250MHz vs 1183MHz)

More VRAM (16GB vs 4GB)

Larger VRAM bandwidth (512.0GB/s vs 96.00GB/s)

4608 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 550X

1.211 TFLOPS

Radeon RX 6900 XT +1802%

23.04 TFLOPS

Radeon RX 550X

VS

Radeon RX 6900 XT

Graphics Card

Dec 2018

Release Date

Oct 2020

Polaris

Generation

Navi II

Desktop

Type

Desktop

PCIe 3.0 x8

Bus Interface

PCIe 4.0 x16

Clock Speeds

1100 MHz

Base Clock

1825 MHz

1183 MHz

Boost Clock

2250 MHz

1500 MHz

Memory Clock

2000 MHz

Memory

4GB

Memory Size

16GB

GDDR5

Memory Type

GDDR6

128bit

Memory Bus

256bit

96.00GB/s

Bandwidth

512.0GB/s

Render Config

-

SM Count

-

8

Compute Units

80

512

Shading Units

5120

32

TMUs

320

16

ROPs

128

-

Tensor Cores

-

RT Cores

80

16 KB (per CU)

L1 Cache

128 KB per Array

512 KB

L2 Cache

4 MB

Theoretical Performance

18.93 GPixel/s

Pixel Rate

288.0 GPixel/s

37.86 GTexel/s

Texture Rate

720.0 GTexel/s

1211 GFLOPS

FP16 (half)

46.08 TFLOPS

1211 GFLOPS

FP32 (float)

23.04 TFLOPS

75.71 GFLOPS

FP64 (double)

1440 GFLOPS

Graphics Processor

Lexa

GPU Name

Navi 21

Lexa PRO (215-0904018)

GPU Variant

Navi 21 XTX (215-121000167)

GCN 4.0

Architecture

RDNA 2.0

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

7 nm

2.2 billion

Transistors

26.8 billion

103 mm²

Die Size

520 mm²

Board Design

50W

TDP

300W

250 W

Suggested PSU

700 W

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

Outputs

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

None

Power Connectors

2x 8-pin

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

-

CUDA

-

6.4

Shader Model

6.5

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