Again, just like all other GeForce 9800 GTX and GeForce 9800 GX2 cards on the market, we have a reference NVIDIA design.

XFX GeForce 9800 GX2 1GB Black Edition: The card looks like it means serious business.

The back of the GX2 looks no different from the front thanks to its unique PCB orientation and cooling design.

Having an SLI connector simply means quad-SLI goodness.
(Image from GX2, GX2 and GX2 Black Edition share the same internals and design.)

A pair of dual-link DVI ports and a single HDMI port as display outputs on the GeForce 9800 GX2 1GB Black Edition.

The GeForce 9800 GX2 1GB Black Edition utilises 6-pin and 8-pin PCI Express connectors (one each).

It can be noted that XFX is paying attention to the smaller details such as appearance of the card, so as to make a visual impact on prospective buyers. Taking from the time of the XFX GeForce 8800 GTS and GTX till today, the latest XFX GeForce 9600 GT and 9800 family still look impressive. We can confidently say that XFX are consistent in outputting one of the nicest designs (on stickers) around.

That said, we're not too keen on their custom heatsink designs (hint hint) on their own PCBs unfortunately. Perhaps XFX should stick to the reference designs because they have been doing fine all along on those. :) 

We get a little more information from the handy GPU-Z tool.