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

VS

AMD Radeon R9 390X

AMD Radeon RX 550X 640SP

We compared two Desktop platform GPUs: 8GB VRAM Radeon R9 390X and 2GB VRAM Radeon RX 550X 640SP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 390X 's Advantages

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (384.0GB/s vs 96.00GB/s)

2176 additional rendering cores

AMD Radeon RX 550X 640SP 's Advantages

Released 2 years and 10 months late

Boost Clock1071MHz

Lower TDP (60W vs 275W)

Score

Benchmark

FP32 (float)

Radeon R9 390X +331%

5.914 TFLOPS

Radeon RX 550X 640SP

1.371 TFLOPS

Radeon R9 390X

VS

Radeon RX 550X 640SP

Graphics Card

Jun 2015

Release Date

Apr 2018

Pirate Islands

Generation

Polaris

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

1019 MHz

-

Boost Clock

1071 MHz

1500 MHz

Memory Clock

1500 MHz

Memory

8GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

512bit

Memory Bus

128bit

384.0GB/s

Bandwidth

96.00GB/s

Render Config

44

Compute Units

10

-

2816

Shading Units

640

176

TMUs

40

64

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

1024 KB

-

Theoretical Performance

67.20 GPixel/s

Pixel Rate

17.14 GPixel/s

184.8 GTexel/s

Texture Rate

42.84 GTexel/s

-

FP16 (half)

1371 GFLOPS

5.914 TFLOPS

FP32 (float)

1371 GFLOPS

739.2 GFLOPS

FP64 (double)

85.68 GFLOPS

Board Design

275W

TDP

60W

600 W

Suggested PSU

250 W

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

Outputs

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

1x 6-pin + 1x 8-pin

Power Connectors

None

Graphics Processor

Grenada

GPU Name

Baffin

Grenada XT (215-0880004)

GPU Variant

Baffin LE

GCN 2.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

6.2 billion

Transistors

3 billion

438 mm²

Die Size

123 mm²

Graphics Features

12 (12_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.0

OpenCL

2.1

1.2

Vulkan

1.2

-

6.3

Shader Model

6.4

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