AMD Radeon 550X vs AMD Radeon 550X 640SP

VS

AMD Radeon 550X

AMD Radeon 550X 640SP

We compared two Desktop platform GPUs: 2GB VRAM Radeon 550X 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 550X 's Advantages

Released 11 months late

Boost Clock has increased by 14% (1218MHz vs 1071MHz)

Larger VRAM bandwidth (112.0GB/s vs 48.00GB/s)

AMD Radeon 550X 640SP 's Advantages

More VRAM (4GB vs 2GB)

128 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon 550X

1.247 TFLOPS

Radeon 550X 640SP +9%

1.371 TFLOPS

Radeon 550X

VS

Radeon 550X 640SP

Graphics Card

Mar 2019

Release Date

Apr 2018

Polaris

Generation

Polaris

Desktop

Type

Desktop

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x8

Clock Speeds

1082 MHz

Base Clock

1019 MHz

1218 MHz

Boost Clock

1071 MHz

1750 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

64bit

112.0GB/s

Bandwidth

48.00GB/s

Render Config

8

Compute Units

10

-

512

Shading Units

640

32

TMUs

40

16

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

19.49 GPixel/s

Pixel Rate

17.14 GPixel/s

38.98 GTexel/s

Texture Rate

42.84 GTexel/s

1247 GFLOPS

FP16 (half)

1371 GFLOPS

1247 GFLOPS

FP32 (float)

1371 GFLOPS

77.95 GFLOPS

FP64 (double)

85.68 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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