AMD Radeon RX 550X vs AMD Radeon RX 6600 XT

VS

AMD Radeon RX 550X

AMD Radeon RX 6600 XT

We compared two Desktop platform GPUs: 4GB VRAM Radeon RX 550X and 8GB VRAM Radeon RX 6600 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 160W)

AMD Radeon RX 6600 XT 's Advantages

Released 2 years and 7 months late

Boost Clock has increased by 119% (2589MHz vs 1183MHz)

More VRAM (8GB vs 4GB)

Larger VRAM bandwidth (256.0GB/s vs 96.00GB/s)

1536 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 550X

1.211 TFLOPS

Radeon RX 6600 XT +775%

10.6 TFLOPS

Radeon RX 550X

VS

Radeon RX 6600 XT

Graphics Card

Dec 2018

Release Date

Jul 2021

Polaris

Generation

Navi II

Desktop

Type

Desktop

PCIe 3.0 x8

Bus Interface

PCIe 4.0 x8

Clock Speeds

1100 MHz

Base Clock

1968 MHz

1183 MHz

Boost Clock

2589 MHz

1500 MHz

Memory Clock

2000 MHz

Memory

4GB

Memory Size

8GB

GDDR5

Memory Type

GDDR6

128bit

Memory Bus

128bit

96.00GB/s

Bandwidth

256.0GB/s

Render Config

8

Compute Units

32

-

512

Shading Units

2048

32

TMUs

128

16

ROPs

64

-

RT Cores

32

16 KB (per CU)

L1 Cache

128 KB per Array

512 KB

L2 Cache

2 MB

-

L3 Cache

32 MB

Theoretical Performance

18.93 GPixel/s

Pixel Rate

165.7 GPixel/s

37.86 GTexel/s

Texture Rate

331.4 GTexel/s

1211 GFLOPS

FP16 (half)

21.21 TFLOPS

1211 GFLOPS

FP32 (float)

10.60 TFLOPS

75.71 GFLOPS

FP64 (double)

662.8 GFLOPS

Board Design

50W

TDP

160W

250 W

Suggested PSU

450 W

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

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

None

Power Connectors

1x 8-pin

Graphics Processor

Lexa

GPU Name

Navi 23

Lexa PRO (215-0904018)

GPU Variant

Navi 23 XT (215-130000006)

GCN 4.0

Architecture

RDNA 2.0

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

7 nm

2.2 billion

Transistors

11.06 billion

103 mm²

Die Size

237 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

6.7

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