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This review is from: Visiontek Radeon 7750 2GB GDDR5 6M (6x MiniDP)
Pros: 6 monitors with independent resolution. With Win 7 monitors can be arranged in any configuration using native Windows Screen Resolution window.
Cons: Not XP compatible. Would show that 6 monitors were attached but would only display on two of them. Had to upgrade to Win7. I was unable to get a Dell u3014 to connect with a DisplayPort cable and enclosed mini-DisplayPort adapter or with a mini-DisplayPort to DisplayPort cable. Ended up having to pay over a hundred $ for an active DisplayPort to dual link DVI adapter. VisionTek tech support answered emails twice on this without giving any meaningful advice.
Other Thoughts: There is included software that will do screen configuration but is not needed and didn't appear to be as flexible as just configuring the screens in Windows. Check your monitors, only 2 passive DVI or HDMI connections are allowed. Any other monitors without DisplayPort will require ACTIVE adapters. ~30 for single link, over 100 for dual link.READ FULL REVIEW
Pros: Will drive 4 monitors in business computers at a low price. Won't tax the computer's power supply. Fanless - fans usually wear out before other components on a video card. Single width card, doesn't require an empty slot next to the video slot. Fits Dells - the majority of Dell motherboards have the cards facing up rather than down like everyone else. A dual slot card won't fit most Dells, this single width card will.
Cons: Does not give 4 configurable desktops like other cards.
With 4 - 1920X1200 monitors, it gives 2 - 3840X1200 desktops, each on a pair of monitors. With 2 monitors that have different resolutions, it will use the lowest to create the max resolution for the pair; a 1920X1200 paired with a 1680X1080, gave resolution of 3360X1080. Windows 7 desktop theme backgrounds scale to fit horizontally so you lose the top and bottom of the picture. Windows that always open in the middle of your first display will be split between those two monitors. If you make a window full screen it will fill two monitors. Because it pairs the monitors, it was not practical for the project that I was doing.
The splitter cables that are included have a sloppy fit. Even though they have the smile/frown shape similar to DVI, they are so loose that they can be installed on the card upside down which will mess up one of the pins
Other Thoughts: This is for multiple monitors not games where you need high video processing speed to navigate through 3-D environments.
I tried it with 3 brands of monitors. It worked with the KDS and Acer monitors but didn't work at all with either of the DoubleSight monitors that I tried.
Pros: Drives 2 monitors with different resolutions with no problems
Cons: Didn't have video until drivers were loaded, not even during startup. Installed 2 of these in a Dell Optiplex 980 running Windows 7 x64. Plugged a monitor up to the primary one. No video. Started the computer through Remote Desktop from another computer and loaded the drivers from the disk. Restarted with these cards and had video on both monitors on both cards. Without another means to start the computer - other video card or Remote Desktop - it would have been impossible to implement these cards.
Other Thoughts: Fans are audible but not loud. Good card for business apps and dual monitors.READ FULL REVIEW