Let's have a look at the packaging of the Inno3D GT 580 OC first. It's size is normal and close to the size of a GTX 480 package. The GTX 580 not any bigger than the GTX 480 after all. Inno3D has included the "overclock" logo on the package to make sure you understand that it has added some engineering to Nvidia's reference design:

The contents are well-packaged into separate carbon boxes for the card and the bundled accessories:

These are a installation manual, an application disc, a a Starcraft promotion card, an iChiLL gaming mouse pad, a power cable and a DVI adapter:

Some stickers on the ant-static packaging are provided to warn users of the high temperature of the card during operation. In addition, Nvidia informs users that its RMA policy does not cover any overheating issues caused by power virus applications:

Let's have a closer look to the Inno3D GTX 580 OC card. Inno3D has followed the GTX 580 reference design. This means that the Inno3D GTX 580 OC follows Nvidia's designs using the reference PCB and cooler.

The PCB includes 12 GDDR5 chips composing the card’s 384bit memory bus. At the center of the card is the GF110 GPU encased in a metal heatspreader, a common sight for NVIDIA’s high-end GPUs.

The card has the same length with a GTX 480 at 10.5". Power connectivity is the same as the GTX 480, with 6pin and 8pin PCIe sockets being located at the top of the card, providing easy access to the sockets.  

The IO bracket of the GTX 580 is also the same we saw on the GTX 480. There are 2 DVI ports and a mini-HDMI port. Although HDMI 1.4a is supported, full audio bit streaming is not. This means that is outputs 8 channel LPCM and lossy audio formats like DD+ and DTS. The card is also supporting 2 displays on one card, so you need to run in SLI if you intend to take advantage of 3DVision/NVIDIA surround across 3 monitors.