AMD Radeon 550X 640SP vs AMD Radeon R9 390 X2

VS

AMD Radeon 550X 640SP

AMD Radeon R9 390 X2

We compared two Desktop platform GPUs: 4GB VRAM Radeon 550X 640SP and 8GB VRAM Radeon R9 390 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon 550X 640SP 's Advantages

Released 2 years and 7 months late

Boost Clock1071MHz

Lower TDP (50W vs 580W)

AMD Radeon R9 390 X2 's Advantages

More VRAM (8GB vs 4GB)

Larger VRAM bandwidth (345.6GB/s vs 48.00GB/s)

1920 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon 550X 640SP

1.371 TFLOPS

Radeon R9 390 X2 +273%

5.12 TFLOPS

Radeon 550X 640SP

VS

Radeon R9 390 X2

Graphics Card

Apr 2018

Release Date

Sep 2015

Polaris

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

1019 MHz

Base Clock

-

1071 MHz

Boost Clock

-

1500 MHz

Memory Clock

1350 MHz

Memory

4GB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

512bit

48.00GB/s

Bandwidth

345.6GB/s

Render Config

10

Compute Units

40

-

640

Shading Units

2560

40

TMUs

160

16

ROPs

64

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

1024 KB

-

Theoretical Performance

17.14 GPixel/s

Pixel Rate

64.00 GPixel/s

42.84 GTexel/s

Texture Rate

160.0 GTexel/s

1371 GFLOPS

FP16 (half)

-

1371 GFLOPS

FP32 (float)

5.120 TFLOPS

85.68 GFLOPS

FP64 (double)

640.0 GFLOPS

Board Design

50W

TDP

580W

250 W

Suggested PSU

950 W

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

Outputs

2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

None

Power Connectors

4x 8-pin

Graphics Processor

Lexa

GPU Name

Grenada

Lexa PRO (215-0904018)

GPU Variant

Grenada PRO (215-0880030)

GCN 4.0

Architecture

GCN 2.0

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

2.2 billion

Transistors

6.2 billion

103 mm²

Die Size

438 mm²

Graphics Features

12 (12_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1

OpenCL

2.0

1.2

Vulkan

1.2

-

6.4

Shader Model

6.3

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