AMD Radeon 550X 640SP vs AMD Radeon RX 7950 XT

VS

AMD Radeon 550X 640SP

AMD Radeon RX 7950 XT

We compared two Desktop platform GPUs: 4GB VRAM Radeon 550X 640SP and 20GB VRAM Radeon RX 7950 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 300W)

AMD Radeon RX 7950 XT 's Advantages

Boost Clock has increased by 180% (3000MHz vs 1071MHz)

More VRAM (20GB vs 4GB)

Larger VRAM bandwidth (800.0GB/s vs 48.00GB/s)

4736 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon 550X 640SP

1.371 TFLOPS

Radeon RX 7950 XT +4605%

64.51 TFLOPS

Radeon 550X 640SP

VS

Radeon RX 7950 XT

Graphics Card

Apr 2018

Release Date

Unknown

Polaris

Generation

Navi III

Desktop

Type

Desktop

PCIe 3.0 x8

Bus Interface

PCIe 4.0 x16

Clock Speeds

1019 MHz

Base Clock

2000 MHz

1071 MHz

Boost Clock

3000 MHz

1500 MHz

Memory Clock

2500 MHz

Memory

4GB

Memory Size

20GB

GDDR5

Memory Type

GDDR6

64bit

Memory Bus

320bit

48.00GB/s

Bandwidth

800.0GB/s

Render Config

10

Compute Units

84

-

640

Shading Units

5376

40

TMUs

336

16

ROPs

192

-

RT Cores

84

16 KB (per CU)

L1 Cache

256 KB per Array

256 KB

L2 Cache

6 MB

-

L3 Cache

80 MB

Theoretical Performance

17.14 GPixel/s

Pixel Rate

576.0 GPixel/s

42.84 GTexel/s

Texture Rate

1008 GTexel/s

1371 GFLOPS

FP16 (half)

129.0 TFLOPS

1371 GFLOPS

FP32 (float)

64.51 TFLOPS

85.68 GFLOPS

FP64 (double)

2.016 TFLOPS

Board Design

50W

TDP

300W

250 W

Suggested PSU

700 W

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

Outputs

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

None

Power Connectors

2x 8-pin

Graphics Processor

Lexa

GPU Name

Navi 31

Lexa PRO (215-0904018)

GPU Variant

Navi 31 XT+

GCN 4.0

Architecture

RDNA 3.0

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

5 nm

2.2 billion

Transistors

57.7 billion

103 mm²

Die Size

529 mm²

Graphics Features

12 (12_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.1

OpenCL

2.2

1.2

Vulkan

1.3

-

6.4

Shader Model

6.7

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