Unlike the Anubis enclosure, the Osiris does not have heatsink shapes and does not feature a door. It is available in black or silver and is made entirely of 6063-T5 aluminum alloy. There are no plastic parts at all.
The front of the case is clean and the general layout looks much like any other case out there. The rear however has one noticeable difference. The power supply is located on the bottom of the chassis. This does not only result in better thermal properties, but also means that you can hide all your unused PSU cables below the mainboard area.
The case sides look identical to those of the Anubis. The windowed side uses both, a metal mesh and a window. The lack of any air vents means that there will no airflow over the graphic cards. While this is certainly not a problem and it should be noted that the interior layout will give you better thermal characteristics than a traditional case, due to the power supply location. Nonetheless, it would have been nice to see a hole for a 80 or 120 mm fan in the side. Each of the panels is secured by two large, spring loaded clamps. This makes the removal of them incredibly easy.
Placing the case on the side, we can take a closer look at the feet. These are made of metal as well and can be adjusted slightly to accommodate for an uneven floor. There is an opening with a metal mesh as well, which is located below the power supply bay, to give the PSU access to fresh air from outside the case.
On the top you will find an identical air vent. There is a 120 mm fan under this one, which simulates the air flow of the power supply. This way you will not lose any of the air flow available in a case with a traditional layout. Toward the front of the top is an I/O panel. This piece has been secured by hex screws. It gives you access to two USB 2.0, one eSATA, the usual audio connectivity. The additional, third audio plug is for the line-in function of your sound card - a very nice feature. The power and reset button - both of them made of metal as well - are also located within this panel.
Taking a closer look at the front of the Osiris, the bottom area is taken by the 120 mm fan intake. Just like the Anubis, the Hiper logo has been extruded into the metal mesh. Above the air vent are the 5.25" drive bays - five of them to be exact. Two of these are intended to be used to cover the plastic faceplate of the drives. This should be more than enough for any home user. There are some hieroglyphs on the top, right corner, which further underline the theme and name of the enclosure.
The rear of the case looks identical to that of the Anubis, except for the PSU bay placement. In the Osiris, it is located on the bottom of the chassis. The middle is taken by the seven PCI brackets. Next to these are two holes to route through any water cooling tubes. The top is occupied by a 120 mm fan and also sports a little plaque with the unique serial number of the case. This is certainly a nice touch.