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

VS

AMD Radeon 550X 640SP

AMD Radeon RX 550X

We compared two Desktop platform GPUs: 4GB VRAM Radeon 550X 640SP 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 550X 640SP 's Advantages

128 additional rendering cores

AMD Radeon RX 550X 's Advantages

Released 8 months late

Boost Clock has increased by 10% (1183MHz vs 1071MHz)

Larger VRAM bandwidth (96.00GB/s vs 48.00GB/s)

Score

Benchmark

FP32 (float)

Radeon 550X 640SP +13%

1.371 TFLOPS

Radeon RX 550X

1.211 TFLOPS

Radeon 550X 640SP

VS

Radeon RX 550X

Graphics Card

Apr 2018

Release Date

Dec 2018

Polaris

Generation

Polaris

Desktop

Type

Desktop

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x8

Clock Speeds

1019 MHz

Base Clock

1100 MHz

1071 MHz

Boost Clock

1183 MHz

1500 MHz

Memory Clock

1500 MHz

Memory

4GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

128bit

48.00GB/s

Bandwidth

96.00GB/s

Render Config

10

Compute Units

8

-

640

Shading Units

512

40

TMUs

32

16

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

17.14 GPixel/s

Pixel Rate

18.93 GPixel/s

42.84 GTexel/s

Texture Rate

37.86 GTexel/s

1371 GFLOPS

FP16 (half)

1211 GFLOPS

1371 GFLOPS

FP32 (float)

1211 GFLOPS

85.68 GFLOPS

FP64 (double)

75.71 GFLOPS

Board Design

50W

TDP

50W

250 W

Suggested PSU

250 W

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

Outputs

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

None

Power Connectors

None

Graphics Processor

Lexa

GPU Name

Lexa

Lexa PRO (215-0904018)

GPU Variant

Lexa PRO (215-0904018)

GCN 4.0

Architecture

GCN 4.0

GlobalFoundries

Foundry

GlobalFoundries

14 nm

Process Size

14 nm

2.2 billion

Transistors

2.2 billion

103 mm²

Die Size

103 mm²

Graphics Features

12 (12_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1

OpenCL

2.1

1.2

Vulkan

1.2

-

6.4

Shader Model

6.4

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