So how do we get to 2048x1536 85Hz? Well 267.4MHz < 400MHz, add a little in for your blanking porches etc. The reason for having two different types of connectors is to allow you to connect either an analog or a digital display to your PC.Posted on Thursday, J08:22 GMTThis is a simplified explination but it shows how you can push 2048x1536 down a DVI-I or DVI-A cableĢ048x1536x85 = 267386880Hz or 267.4MHz (asuming no blanking space), a single link DVI-D connection has a 165MHz dot clock to play with so that obviously isn't going to work, PCs have a trick up their sleeve which is to strip almost all blanking information out of the signal allowing access to resolutions beyond 1600x1200, (fwiw 1920x1200 is basically the highest standard resolution available beyond 1600x1200 which a single DVI-D link supports as 1920x1440 requires a shade under 166MHz for the displayed pixels) These cards generally will only support a single display at a time - not dual monitors. Some NVIDIA based graphics cards will look similar to Figure 2 which features a DVI-D connector as well as a VGA connector. Support Dual-Link DVI-D highest video resolution to WQXGA 2560 x 1600 60Hz, Support Dual-Link DVI-D highest video resolution 38402160 30Hz The adapter requires USB power, please connect the attached USB cable to USB port for power, this adapter only submit digital signals, it does not submit analog signals, please use a DVI Dual link cable. If your NVIDIA based graphics card features two video out connectors (ie VGA + DVI), it does not necessarily mean that it will support dual monitors at the same time. The adapter works with Single-Link DVI and Dual-Link DVI using a built-in active protocol converter with up to 10.8Gbps throughput and a 330 MHz maximum pixel. The DVI-D cable will read only the digital signal from the DVI-I connector on the graphics card and ignore the analog signal. The UltraAV DisplayPort or Mini DisplayPort to DVI-D Dual-Link active adapter provides the connection from your DisplayPort enabled computer to a DVI Dual-Link supported digital display. But from what I can gather, and its been a year since I last looked into this, its going to be a YMMV scenario. Ive seen enough convincing success stories of Active DisplayPort to DVI Dual Link pulling off 2560x144060Hz, that I know its a thing. People rarely use the analog lines in a DVI-I cable so theres. As a result, the most useful kind of digital DVI cable is a dual link DVI-D cable. And a dual link cable will function just fine in a single link setup as described above. NVIDIA based graphics cards which carry a DVI-I connector are fully compatible with flat panel LCD monitors which typically have DVI-D cables. DisplayPort can physically support dual link channels. DVI-D cables fit into both DVI-D and DVI-I connectors whereas DVI-I cables do not fit into DVI-D connectors. The extra pins on a DVI-I connector carry the analog signal which the DVI-D connector does not have. The graphics card shown in Figure 1 which shows a DVI-I connector contains more pins than the DVI-D connector shown in Figure 2. So that tells me that both monitors are working and can connect to the computer via DVI-D. I can connect either monitor using the DVI-D cable.
There are currently two prominent types of DVI connectors, DVI-I ( Figure 1) and DVI-D ( Figure 2).Ī DVI-D connector on a graphics card sends out a digital signal only, while a DVI-I connector can send out a digital signal (for digital displays such as flat panel LCD monitors) as well as analog signal (for older displays such as a CRT monitor) using a DVI to VGA adaptor shown below. I have a connection for a DVI-D and VGA on my computer. For every graphics card that features a DVI connector, the number of pins and layout of the pins on the DVI connector will vary depending on what type of DVI connector is found on the graphics card. However, most cards that have dual-link support are higher end models, and would likely have two dvi ports anyway. A DVI connector is characteristically colored white (as opposed to a VGA connector which is colored blue). Typically, if your DVI port is Dual-Link capable, you can get a cable that will let you drive two flat panels. Most current NVIDIA based graphics cards feature a Digital Video Interface (DVI) connector for connecting a digital flat panel LCD monitor or projector to the card.
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