Multi-Monitor Notebooks Enabled By USB?
According to a recent poll we posted to our Facebook page, 61% of you currently own a notebook. If you don't, there's a chance you simply have no need for mobility. Or perhaps you've replaced the heft of a mobile PC with a tablet or smartphone for tasks like answering email or online banking. Nevertheless, we expect the percentage of notebook owners to rise as performance increases and prices continue to drop.
The appeal of notebooks is clear. Plopping down on the couch to browse the Web is far more relaxing than sitting at the same computer desk day after day. But that freedom comes at a price. Even when you move past the fact that mobile systems are necessarily slower at the same price point, you're generally still restricted to a single screen.
Solving that issue isn't easy. Some notebooks include a second display output you can use when there's another monitor available. And we've seen a handful of laptops with AMD-based GPUs that expose Eyefinity functionality, accommodating a third screen. But there aren't many of those around. So, how do you get the flexibility to connect three of four displays at a time? DisplayLink has a solution in its technology that enables graphics over the USB bus, connecting to monitors with USB inputs.
These devices are handy in a pinch, but how do they actually work? We take a deeper look at this technology so you know what to look out for before buying multiple monitors for your mobile workstation.
|System||MacBook Pro 2010 13.3"||Lenovo ThinkPad T410|
|Processor||Intel Core 2 Duo, 2.4 GHz||Intel Core i5-540M (Arrandale), 2.53 GHz|
|Memory||Crucial DDR3-1066 8 GB (2 x 4 GB)||Crucial DDR3-1333 8 GB (2 x 4 GB)|
|Hard Drive||Western Digital Scorpio Blue 1 TB||Seagate Momentus 5400.6 500 GB|
|Graphics||Nvidia GeForce 320M||Nvidia Quadro NVS 3100M|
|Network Card||-||AirPcap Nx USB Adapter|
|System Software and Drivers|
|Operating System||Mac OS X 10.6.7||Windows 7 Ultimate 64-bit SP1|
|Drivers||DisplayLink 1.6||DisplayLink 5.6|
All performance testing is performed using a Plugable USB-to-VGA adapter.
SteelCity1981So when USB 3.0 ports goes to 100w this will eliminate the need for a display link i'd imagine.
laptops don't have 100w of power to output to a external GPU, they are probably not going to be on board with this technology. Besides which USB3 is nowhere near fast enough to feed data to a Graphics card in real time, without ever bothering to talk about latency or data-loss. It might be useful if they put very low end Graphics card and powered them off of the USB port, I don't see it becoming common enough to obsolete display port for some time.