The XFX Radeon HD 7790 Core Edition is a based on a reference board with a small single-fan aluminum cooler. All three cards are clocked at the same speed of 1075 MHz, while the memory clock was not specified. The Core Edition is priced at $150.
The two other cards are from Black Series. They differ in memory buffer size, one features 1GB while the other has 2GB. The specification site is not completed yet, so the only part we actually know is the clock of 1075 MHz. The Black series come with a dual-fan cooler, which is installed on a non-reference board.
All cards are equipped with two DVI’s, DisplayPort and a HDMI connector.