Elite Bastards posted a review on the HIS Radeon HD 5670 IceQ 512MB and ASUS EAH5670 1GB video card

While the board layout follows AMD's reference design completely, sporting no additional power connector but support for a CrossFire configuration via the usual multi-GPU connectors, ASUS have chosen to go down their own route when it comes to offering a cooling solution for the board. While the EAH5670's cooler can't quite be considered a single slot solution, it is a relatively low-profile one, which ASUS claims to be "dust-proof", thus elongating the board's lifespan by as much as 25%. While we can't really test those claims, the cooler's design should at least reduce the build-up of dust somewhat, which could be good news if your system tends to suffer from such "ailments".

HIS Radeon HD 5670 IceQ 512MB and ASUS EAH5670 1GB Video Card Review