Dubbed PULSE, the range is tailored for PC gamers and according to the press release they want “performance, durability and great value" - no mention of a girlfriend.

PULSE is basically a second tier offer with a few rather nice premium features such as Black Diamond Chokes 4 (RX 580 and 570), High-polymer aluminium capacitors, Semi passive cooling via Sapphire Intelligent Fan Control III, Twin HDMI ports for VR, Fuse protection and an aluminium backplate.

Hexus has compiled a handy list of all the products:

RX 580: 1440p gaming @ 60 FPS, Dual-X cooling with Quick Connect feature for easy fan swap, 2304 stream processors, boost-clocked at 1366MHz, 8GB of VRAM (also available in a 4GB version).

RX 570: 1080p gaming @ 60 FPS, Dual-X cooling with Quick Connect feature for easy fan swap, 2048 stream processors that run at a 1284MHz boost clock, 4GB of GDDR5.
RX 570 ITX: Gaming on small-form-factor PCs, single fan, 2048 stream processors that run at a 1244MHz boost clock, 4GB of GDDR5.

RX 550: Entry level powered by modern Polaris GPU, single fan, with 512 stream processors, boosts up to 1750MHz, offered in both 2GB/4GB GDDR5 versions. This card is said to be "up to 5x faster than an Intel Integrated Graphics (HD 530) and up to 2x faster than the previous
generation Radeon R7 250 card". AMD launched the RX 550 yesterday.

Sapphire says its PULSE graphics card range is shipping now, worldwide, although it has not mentioned a price.