HIS must have figured it wasn't enough to simply squeeze 2GB of DDR3 memory on a Radeon HD 6570 graphics card and call it a day, so it replaced the heatsink/fan assembly with a passive cooler. Not only is this half-height card toting the most memory of any HD 6570 out there, it's also completely silent.
The decision to double up the RAM on the Radeon HD 6570 is certainly a dubious one, but the passive cooler and low profile design (with included low profile brackets) both offer tangible benefits for HTPC users or silent PC gurus. Otherwise, it's the same HD 6570 as you already know it, with 480 stream processors, 24 texture units, and 8 ROP units. HIS clocked the GPU at 650MHz, and the 2GB of DDR3 memory runs at 1,000MHz on a narrow 128-bit bus.
Connectivity options include a VGA port, dual-link DVI port, and HDMI 1.4a. Look for the card to sell for around $105.