AMD Radeon 550X 640SP vs AMD Radeon RX 6650 XT

VS

AMD Radeon 550X 640SP

AMD Radeon RX 6650 XT

We compared two Desktop platform GPUs: 4GB VRAM Radeon 550X 640SP and 8GB VRAM Radeon RX 6650 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon 550X 640SP 's Advantages

Lower TDP (50W vs 176W)

AMD Radeon RX 6650 XT 's Advantages

Released 4 years and 1 months late

Boost Clock has increased by 146% (2635MHz vs 1071MHz)

More VRAM (8GB vs 4GB)

Larger VRAM bandwidth (280.3GB/s vs 48.00GB/s)

1408 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon 550X 640SP

1.371 TFLOPS

Radeon RX 6650 XT +687%

10.79 TFLOPS

Radeon 550X 640SP

VS

Radeon RX 6650 XT

Graphics Card

Apr 2018

Release Date

May 2022

Polaris

Generation

Navi II

Desktop

Type

Desktop

PCIe 3.0 x8

Bus Interface

PCIe 4.0 x8

Clock Speeds

1019 MHz

Base Clock

2055 MHz

1071 MHz

Boost Clock

2635 MHz

1500 MHz

Memory Clock

2190 MHz

Memory

4GB

Memory Size

8GB

GDDR5

Memory Type

GDDR6

64bit

Memory Bus

128bit

48.00GB/s

Bandwidth

280.3GB/s

Render Config

10

Compute Units

32

-

640

Shading Units

2048

40

TMUs

128

16

ROPs

64

-

RT Cores

32

16 KB (per CU)

L1 Cache

128 KB per Array

256 KB

L2 Cache

2 MB

-

L3 Cache

32 MB

Theoretical Performance

17.14 GPixel/s

Pixel Rate

168.6 GPixel/s

42.84 GTexel/s

Texture Rate

337.3 GTexel/s

1371 GFLOPS

FP16 (half)

21.59 TFLOPS

1371 GFLOPS

FP32 (float)

10.79 TFLOPS

85.68 GFLOPS

FP64 (double)

674.6 GFLOPS

Board Design

50W

TDP

176W

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 KXT (215-130000136)

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

6.5

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