AMD Radeon RX 7800 XT vs AMD Radeon 550X 640SP

VS

AMD Radeon RX 7800 XT

AMD Radeon 550X 640SP

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 7800 XT and 4GB VRAM Radeon 550X 640SP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7800 XT 's Advantages

Released 5 years and 4 months late

Boost Clock has increased by 127% (2430MHz vs 1071MHz)

More VRAM (16GB vs 4GB)

Larger VRAM bandwidth (624.1GB/s vs 48.00GB/s)

3200 additional rendering cores

AMD Radeon 550X 640SP 's Advantages

Lower TDP (50W vs 263W)

Score

Benchmark

FP32 (float)

Radeon RX 7800 XT +2622%

37.32 TFLOPS

Radeon 550X 640SP

1.371 TFLOPS

Radeon RX 7800 XT

VS

Radeon 550X 640SP

Graphics Card

Aug 2023

Release Date

Apr 2018

Navi III

Generation

Polaris

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

1295 MHz

Base Clock

1019 MHz

2430 MHz

Boost Clock

1071 MHz

2438 MHz

Memory Clock

1500 MHz

Memory

16GB

Memory Size

4GB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

64bit

624.1GB/s

Bandwidth

48.00GB/s

Render Config

60

Compute Units

10

-

3840

Shading Units

640

240

TMUs

40

96

ROPs

16

-

60

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

4 MB

L2 Cache

256 KB

64 MB

L3 Cache

-

Theoretical Performance

233.3 GPixel/s

Pixel Rate

17.14 GPixel/s

583.2 GTexel/s

Texture Rate

42.84 GTexel/s

74.65 TFLOPS

FP16 (half)

1371 GFLOPS

37.32 TFLOPS

FP32 (float)

1371 GFLOPS

1166 GFLOPS

FP64 (double)

85.68 GFLOPS

Board Design

263W

TDP

50W

600 W

Suggested PSU

250 W

1x HDMI 2.1a 3x DisplayPort 2.1

Outputs

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

2x 8-pin

Power Connectors

None

Graphics Processor

Navi 32

GPU Name

Lexa

Navi 32 XT (215-180000006)

GPU Variant

Lexa PRO (215-0904018)

RDNA 3.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

5 nm

Process Size

14 nm

28.1 billion

Transistors

2.2 billion

346 mm²

Die Size

103 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.2

OpenCL

2.1

1.3

Vulkan

1.2

-

6.7

Shader Model

6.4

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