About a year ago, I bought an Intel Mac Mini as a file/media server for my home. Soon after it was up and running, I realized it was more than enough computer to satisfy many of my daily needs. I have faster computers around for more specialized tasks, but the combination of size, power consumption, and reliability turned the little guy into my primary home computer.
I paired the Mini with a WUXGA monitor, and as always, wished for more desktop space. With integrated graphics, and no opportunities for conventional hardware expansion, I looked at the other choices for OSX machines. The other desktop models did not match my needs and price range. I had a low-end Powermac G5 a few years ago, and the cost of entry was $1500. Today, the cheapest Mac Pro is $2300, and frankly much more than I was willing to pay for a general task machine. I view the imac as an overpriced under-specced machine, coupled to either a sub-standard display, or one that is too pricey to eliminate at every upgrade. The 24” WUXGA model also would not match my current panels. I have two very nice 23” cinema displays, and want to keep them in use as much as possible until the next generation of panels and resolution independent OS’s make 200dpi+ a reality.
I began looking at unconventional options to satisfy my want for more desk space. My first was the Matrox DualHead2Go Digital Edition (~$225 new, I paid $180 used, link). I bought the Matrox after reading glowing reviews, and was expecting a happy experience. Unfortunately, the 2xWUXGA resolution was too high was the unit to output the conventional 60hz frame rate, and was reduced to 58hz. With digital panels, this leads to an unacceptable fuzzy resolution. Curious if the resolution issue was limited to my mini and not the Matrox, I hooked up the unit to machines with more powerful video cards in Windows and OSX flavors. The unacceptable output continued. Currently, I am using this unit to power two SXGA monitors. It works perfectly, but the two monitors are not enough desktop space for me to use in a primary fashion.
My next purchase was the Tritton Technologies See2 Xtreme (~$95 new, link), which uses a USB 2.0 connection to output to a video card. There are many other USB options, but none of them advertise resolutions higher than 1600*1200, which would not work with my monitor. I bought the See2 Xtreme without finding a user review, and was disappointed when I received the box and discovered that it did not support WUXGA or OSX. Thinking I read the manufacturer specs incorrectly or received an inferior specced sub-model, I logged onto their web site and was relieved to find WUXGA and OSX support. Clearly, this company is improving their product fast enough to make their packaging too conservative, always a good sign. The OSX driver was an online download and an easy install. After installation I hooked up the second display and saw black. It turns out the unit defaults to XGA resolution, which cannot be output on my panel. I hooked up a smaller panel, got the display working, and changed the resolution to 1920*1200. The display immediately looked beautiful. I thought I had found perfect success, until I moved a program window onto the second panel. The display output is very sharp, however the frame rate must be somewhere between 1-15 fps depending on what is displayed. Video is a joke, and even movement of the mouse is stuttered. I reduced the colors for the panel in OSX hoping to clear things up, and it became better, but far from acceptable. I have yet to try the mature Windows driver, but I am hoping it provides a much better experience, which will give me the hope that the OSX driver will improve.
At this time, I still consider a 2*WUXGA output from a Mini an unfinished quest. These workarounds feel more like hardware hacks than finished options, and each choice has obvious flaws. However, the See2 Xtreme is clearly farther along than the DualHead2Go. I have both panels running at this time, but only use the secondary one for largely stationary program windows and browser pages. It is fantastic for things like stock charts. In the mean time, I will keep looking and update as the Tritton OSX drivers are improved.