Radeon RX 500 series graphics cards

Chipset: AMD RX 580
Memory: 8GB DDR5 Memory
Factory Overclocked: 1405Mhz
XFX double dissipation cooling technology
Form Factor: Plug-in Card

Chipset: AMD RX 570
Memory: 8GB GDDR5. 2048 stream processors
Dual bios - Gaming and cryptocurrency mining
XFX double dissipation cooling design
Minimum power supply requirement 500 watt

Chipset: AMD RX 570
Memory: 8GB DDR5
Dual Bios - Gaming and Cryptocurrency Mining
XFX Double Dissipation Cooling Design
Factory Overclocked
Form Factor: ATX

Powered by the AMD Radeon RX 580 graphics processing unit (GPU) With a 1405MHz clock speed and 1425MHz boost clock speed to help meet the needs of demanding games.
8GB GDDR5 (256-bit) on-board memory Provides the memory needed to recreate game visuals with striking realism.
PCI Express 3.0 interface Offers compatibility with a range of systems.
AMD Eyefinity technology Lets you connect up to 6 displays (not included), enlivening your gaming experience with panoramic visuals.
DVI, HDMI and 3 DisplayPort outputs Enable flexible connectivity.

BIOSTAR RADEON RX 550 Boost Frequency Up to 1183 MHz Max Performance, Stream Processors 512
Powerful GPU Memory, High Performance Gaming Memory Speed 1,500 MHz ( 6.0 Gbps ), Memory Size 2GB, Memory Type (GPU) GDDR5, Memory Interface 128-bit, Max Memory Bandwidth 96 GB/s
Connectivity ports : DisplayPort 1.4 HDR, Dual Link DVI-D, HDMI 4K60 Support
Supported OS : Windows 10 64-Bit - Windows 7 32-Bit and 64-Bit