AMD Radeon RX 6600 XT vs AMD Radeon RX 550X

VS

AMD Radeon RX 6600 XT AMD Radeon RX 550X

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 XT 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 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

AMD Radeon RX 550X 's Advantages

Lower TDP (50W vs 160W)

Score

Benchmark

FP32 (float)

Radeon RX 6600 XT +775%

10.6 TFLOPS

Radeon RX 550X

1.211 TFLOPS

Radeon RX 6600 XT

VS

Radeon RX 550X

Graphics Card

Jul 2021

Release Date

Dec 2018

Navi II

Generation

Polaris

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCIe 3.0 x8

Clock Speeds

1968 MHz

Base Clock

1100 MHz

2589 MHz

Boost Clock

1183 MHz

2000 MHz

Memory Clock

1500 MHz

Memory

8GB

Memory Size

4GB

GDDR6

Memory Type

GDDR5

128bit

Memory Bus

128bit

256.0GB/s

Bandwidth

96.00GB/s

Render Config

-

SM Count

-

32

Compute Units

8

2048

Shading Units

512

128

TMUs

32

64

ROPs

16

-

Tensor Cores

-

32

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

512 KB

Theoretical Performance

165.7 GPixel/s

Pixel Rate

18.93 GPixel/s

331.4 GTexel/s

Texture Rate

37.86 GTexel/s

21.21 TFLOPS

FP16 (half)

1211 GFLOPS

10.60 TFLOPS

FP32 (float)

1211 GFLOPS

662.8 GFLOPS

FP64 (double)

75.71 GFLOPS

Graphics Processor

Navi 23

GPU Name

Lexa

Navi 23 XT (215-130000006)

GPU Variant

Lexa PRO (215-0904018)

RDNA 2.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

7 nm

Process Size

14 nm

11.06 billion

Transistors

2.2 billion

237 mm²

Die Size

103 mm²

Board Design

160W

TDP

50W

450 W

Suggested PSU

250 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

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

1x 8-pin

Power Connectors

None

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

-

CUDA

-

6.7

Shader Model

6.4

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