Are three monitors better than two?

In my mind, there’s no question that any information worker will be more productive with two monitors than with just one. I’ve been using dual monitors for at least five years, and I can see my productivity drop when I try to work with just one, as I do when traveling with a notebook.

I’ve considered adding a third monitor, but it’s never made it to the top of my upgrade stack. Partly, that’s because I’m not sure I’d really get a lot more benefit out of it. Some time back, Jeff Atwood argued that three monitors is the "sweet spot" in terms of desktop space, pointing out that Google’s Larry Page and Microsoft’s Bill Gates both use triple-monitor setups. Today, Scott Mitchell says he doesn’t see the payoff:

I’ve been using the three monitor setup for a couple of months now and regret to say that I have not seen the same productivity benefits or improvement of worklife that Jeff espouses or that I enjoyed when going from one monitor to two. For certain tasks I am more productive with three monitors than two, a prime example being if I need to review a client’s email while bug bashing. I can have the email open that explains the error in one window, Visual Studio in another, and the web application running in the third. However, for most other activities the third monitor does not add too much value. Consequently, it’s not uncommon for one of the three to sit unused for long stretches of time.

In my hardware setup, the biggest issue is how to drive that third monitor. Currently, I have a 24-inch (1900×1200) widescreen LCD and a 4:3 (1600×1200) LCD. Because both displays are the same height, they form a continuous desktop surface. I keep the Windows Vista Sidebar and the Taskbar on the smaller of the two monitors, arranged on the right. The widescreen monitor is on the left, and I use Ultramon’s extra taskbar to manage windows on that display. Here’s a bird’s-eye view:

dual- monitor desktop

Jeff Atwood uses a Matrox TripleHead2Go device to drive his three monitors. [Update: In the comments, Jeff clarifies that no, he doesn’t use this device. Instead, he has a pair of PCIe video cards.] As he points out, though, this device is less than optimal because it creates a single large display instead of three individual displays. For me, the dealbreaker is that it requires all three monitors to be the same resolution, and the maximum supported resolution for each screen in a three-monitor display is 1360×768. (The digital edition will handle two 1900×1200 displays, but that won’t help me.)

The more logical way for me to get a third monitor is to add a second video card. Alas, none of my desktop systems have two PCIe x16 slots. I’ve looked into using PCIe x1 slots and PCI slots, buut the performance is terrible and the price is high for those options. For my next desktop PC I’ll probably spec out a gaming-class machine that has two video card slots.

Meanwhile, I’m happy and productive with two monitors, and I guess it will stay that way for a while.

Update: I love my readers.

In the comments, James Tenniswood suggests a USB-to-DVI external adapter, which can drive an LCD monitor at 1280×1024 ($110, free shipping), or a high-resolution USB-to-DVI adapter that works at 1600×1200 ($130 with free shipping).

Reader Jeremy (no last name) swears by MaxiVista and says he “experienced a great lack in productivity” when he had to go back to two monitors after using three.

From Italy, Paperino says he is using an EVGA USB adapter with good results. Customer reviews at Newegg are mixed.

Any other options worth exploring?

24 Responses to Are three monitors better than two?

  • Jeremy says:

    Well, good points were posted, but I’ve used 3 monitors before and had to give up my 3rd to someone else at work a couple months back. Now, I’m back to 2 monitors. In contrast to your post, I have experienced a great lack in productivity.

    My typical setup WinXP –
    1st monitor: Outlook, Sidebar (Vista Sidebar clone), taskbar;
    2nd monitor: main workspace, browser, apps, etc.;
    3rd monitor: MS OneNote (used constantly).

    I used MaxiVista to display the 3rd monitor. It was great and my co-worker uses it with his 3 monitor setup.

    Cheers.

  • Jeremy says:

    Follow up — I told my co-worker (programmer that uses 3 monitors) about your post concluding with the opinion that 3 monitors did not make a big difference. Well, let’s just say…he laughed in my face and used other choice words :)

  • Ed Bott says:

    Thanks, Jeremy. I may have to give MaxiVista a try.

  • James Tenniswood says:

    You could also try a usb to dvi adaptor…
    http://sewelldirect.com/USB-to-DVI-External-Video-Card.asp

  • Paperino says:

    Ed,
    I did exactly what James suggested and I bought an EVGA usb adapter. It works great although I have been running with three monitors for only few days so I cannot make a statement about productivity: but I use Remote Desktop a lot and I can really apreciate the fact that I can operate different boxes very easily. I just posted on the topic (in Italian though):
    http://aovestdipaperino.com/posts/in-da-cleb.aspx

  • Ed Bott says:

    Mille grazie, Paperino!

  • Brian Hoyt says:

    You can get a nVidia 6200 based PCI card for under $60. The performance won’t run high end games but is more than sufficient for Aero or other desktop apps.

  • Ed Bott says:

    Brian, multiple cards have to be using the same driver, and my main systems here are ATI-based at the moment. But now that you mention it I might have an old Radeon 9600 card hanging around… Update: Looks like the only ATI cards available in PCI format are Radeon 9250s, which are DirectX 8 only and thus not Aero-compatible. So that’s not an option.

  • Light & Dark says:

    Ed, another option would be to go with a straight USB-connected monitor. Samsung makes a 19″ that uses USB and works very, very well. I’ve got my CEO set up with 2 of these on her laptop and she just loves ‘em. Their nice quality monitors and the USB connection is dead simple. (There’s a “virtual video card” in a flash chip in each monitor – slick)

    From what I’ve seen, these provide better image quality and response time than most of the DVI-USB converters.

    Not for high-powered gaming or huge video files, but for heavy office functions, just dandy.

    The model we’re using is a Samsung 940UX. (19″, 4:3AR) There was a larger one (21?) on the roadmap when we bought these, but the 19s were more than enough for our needs.

    They come with built-in USB ports, which means the laptop user can plug in one simple USB port to get monitor, keyboard, mouse etc combined – nice for laptops with no docking station.

    Might work for your 1 additional monitor if the larger size is now available. (we bought 6 months ago).

    Paul

  • Malcolm says:

    I run 3 Viewsonic VP2030B monitors at 1600×1200 from a single NVidia Quadro NVS 440 card. I picked up the card for $250 on eBay.

    Malcolm

  • Cory says:

    I have two monitors: 24″ 1920×1200 and 22″ 1680×1050, and unquestionably see higher productivity. I never thought I’d need 3 monitors until I really mastered the two monitors, then just last week I was telling my wife how much better it would be with a third. Usually I do multi-tasking stuff on top of my web design. I usually program in one monitor, test in the other and wish I had a third for email, IMing (which I do constantly) or even for testing in another browser. Often times I get turned around when I go from Dreamweaver to IE to Firefox. However if I had a third I’d pick on of those and probably wish for a fourth… for now I’m good with two.

    Besides the graphics card issues, don’t forget the all important “desk” space issue ;)

  • Another option, and the one I use, is to hook up the third monitor to a second computer and use Synergy to share the keyboard/mouse.

    So I’ve got Vista on two monitors, and Linux on one. You simply can’t beat a Vista+Linux setup…. I can run any software I want, plus I’ve got the power of the linux command line at my fingertips.

  • MauiDan says:

    I had two 20″ screens for a while, then added a third (24″) and haven’t looked back. I did however, have two PCIx slots, so adding a second video card was not a problem. Ultramon has been invaluable.

    5120×1200 rocks!
    http://www.flickr.com/photos/mauidan/2308674134/sizes/o/

  • MauiDan says:

    I should add that for the first month, I did feel a bit ridiculous, but I loaned out my 24 to a buddy for a few days and really missed it. One of my screens is almost dedicated to instant messenger/music…so not super productive but it keeps it out of the way of real work.

  • MaryTN says:

    Thanks a lot, Ed. I didn’t even know this existed and now I have serious envy. For many reasons, I do most of my computer stuff with my notebook on my lap while I sit in a squishy overstuffed leather chair. But I will never really like the touchpad when compared to a mouse for getting stuff done.

    I’ll add “2 or 3 monitors” to my dream-office wish list.

  • Jeff Atwood says:

    Hi Ed,

    I’m a big fan! Love your articles! Thanks for the link.

    > Jeff Atwood uses a Matrox TripleHead2Go device to drive his three monitors.

    Actually, I don’t. I use two paired video cards to drive 3 monitors. Right now it’s a NVIDIA 9600 GT and 8500 GT pair. They don’t have to be the same brand, but they have to be the same family tree (ATI or NVIDIA) and same “generation”. At least in Vista, anyway. The simple path is just to get two of the same model. I highly recommend the 9600 GT at the moment, though the new ATI 4850 cards are outstanding as well.

    Unfortunately to get real multimon, you must build your own PC, as big box retailers almost NEVER ship PCs that have two video card appropriate slots. One, if you’re lucky. Never two. Only aftermarket mobos offer this. So for the average user, they’re effectively stuck at two monitors.

    I proposed the matrox as a postfix for people who aren’t willing to build their own PCs and get mobos that have two video card slots. It is my hope this will become more common in the future, but based on rabid cost cutting, I’m not hopeful.

    The main advantage of three monitors is that you get a “center”. With two monitors, which one is primary? Left? right? Do you put them in the middle of your desk or off to the side? With two there’s a line right in the middle!

    I do agree that the principles of diminishing returns kick in pretty quickly after two (for one thing, how much can you move your neck), but having a center is HUGE. Four is pretty much out of the question for me, but my life begins at three monitors. :)

  • Scott says:

    I effectively have three monitors. My main PC is a middling Gateway laptop (2.2. Ghz AMD solo core CPU) with a 14.1 in 1280 x 800 screen, and a 19 in 1280 x 1024 LCD attached to the laptop’s VGA out connection. I use the 19 in LCD as my main monitor, and the laptop’s screen is my “utility” monitor (I recently re-installed Vista on it — it came pre-installed with Vista, but I “downgraded” to Win XP until SP1 came out — so the sidebar is open here, as well as Skype, Twhirl, etc.). I also use Ultramon — couldn’t imagine going without it.

    Then, I have a 1999-vintage laptop with Win 2000 that I use for printer-sharing (my old laser printer has a parallel connector, which new laptops don’t have), IM (Pidgin), and streaming audio (VLC). The laptop has a 400 Mhz Celeron CPU, 192 MB of RAM, 800 x 600 screen, and 8 MB of video RAM, but it is more than capable of doing these light-duty tasks with Win 2000 (heck, even Win XP runs suprisingly well on this old laptop — until you add security software, which makes it crawl). I suppose I could also use MaxiVista or Synergy and control everything with one keyboard/mouse, but it works fine with this setup.

    So, that’s my “poor man’s” 3 monitor setup.

  • Omar Shahine says:

    Ed,

    I have a USB-DVI Adapter that drives a 1600 x 1200 monitor.

    Although the DisplayLink driver software has gotten better in the past few months, there are a number of problems with it.

    Primarily

    1) High CPU Usage to the point that during CPU spikes my mouse would stop moving.
    2) no support during boot of course
    3) some issues with docking/undocking my laptop
    4) occasionally “forgets” monitor configuration. Mostly a problem for laptops.

    It’s neat technology though.

  • After a recent trip back from Europe I ended up with serious neck/shoulder pain. After a month+ of muscle relaxers, PT, MRI’s and other treatments nothing seemed to help.

    One day I had a brain storm and decided to go from my three monitors back to only two. Within a couple days the pain was gone and hasn’t returned.

    I vote, stick with your current configuration.

    Bill

  • PC Doc says:

    Hey Ed!

    Why do you need 2 x two PCIe x16 slots? Why not go for a 4 x DVI card like the Asus EAH3870X2?

    To be honest Ed, I think if I was to take the 3 x screen approach I’d make the third screen a Wacom Cintiq – those things are nice and add a new dimension to having more screen real estate.

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