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Tripple monitor (not eyefinity) need DP?

post #1 of 11
Thread Starter 
I have three monitors, I dont want to game across them all, but i do want to extend my desktop across them all
do i still need an active display port adaptor?
or can i just use a norrmal one?
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post #2 of 11
Passive will not work.

You either need a Flex edition card with eyefinity logic built in, or you need an active DP adapter, or you need a plain DP monitor.
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post #3 of 11
Quote:
Originally Posted by railfan844 View Post
Passive will not work.

You either need a Flex edition card with eyefinity logic built in, or you need an active DP adapter, or you need a plain DP monitor.
No you don't. For resolutions no higher than 1080, you do not need an active adapter. Though you might buy one that is labeled active, it isn't. Buy one of the Accell? ones from Amazon for $20 and it's a done deal. You don't need a powered active adapter for 3 1080 screens.
    
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post #4 of 11
No single GPU card can run more than 2 displays without using DisplayPort, and that includes AMD/ATi cards. You will need an adapter, I'm not quite sure what the maximum safe resolution is for a passive adapter, so take the advice of the ATi users on that front.
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post #5 of 11
i have 3 1080 screens, in eyefinity, but sometimes i use them as extended too.

i had to use an active adapter, apparently you cant set up 3 monitors without it. (when i set it up, i dont know if the new drivers changed that). i used the sapphire DP to vga adapter it was the cheapest at the time.

strange how in windows you can only have 3 monitors set up at a time, but in ubuntu you can use all 4.
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post #6 of 11
Thread Starter 
Ah thanks all! +rep
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post #7 of 11
Active is ambigous. When eyefinity came out active referred exclusively to adapters with a power source like a usb pigtail, while passive adapters did not have a powersource.

All that matters to you at 1080 is that it is cheap. Do not spend more than around 20$ unless you are planning on upgrading to higher resolution than 1080 on any of your monitors. A non-powered adapter active or not, will work fine at that resolution.
    
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post #8 of 11
Quote:
Originally Posted by Senator View Post
Active is ambigous. When eyefinity came out active referred exclusively to adapters with a power source like a usb pigtail, while passive adapters did not have a powersource.

All that matters to you at 1080 is that it is cheap. Do not spend more than around 20$ unless you are planning on upgrading to higher resolution than 1080 on any of your monitors. A non-powered adapter active or not, will work fine at that resolution.
No offense but t's not ambiguous, yer just stuck with an issue over the term active. It's active because there's circuitry in there designed to work in eyefinity. Active again does not = powered, ie. the usb powered adapter.
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post #9 of 11
Quote:
Originally Posted by tsm106 View Post
No offense but t's not ambiguous, yer just stuck with an issue over the term active. It's active because there's circuitry in there designed to work in eyefinity. Active again does not = powered, ie. the usb powered adapter.
No offense taken. I honestly don't doubt what you've said but would you point me to a link? I thought I had read all of AMD's page articles about eyefinity and some other forum posts, but I've never found a clear concise statement about what determines an adapter's passive or active rating. Lol it's been irritating me since the 5XXX series. Seriously if you can educate me I will be very appreciative!
    
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post #10 of 11
AMD rolled out a reference-design DisplayPort to DVI active adapter today, that lets the masses create Eyefinity setups on existing monitors easier. The adapter plugs into full-sized and mini DisplayPort connectors on ATI Radeon graphics cards, and gives out a single-link DVI signal. The conversion between DP to DVI is active, and conserves video quality, as well as other features such as content protection. This is because when Eyefinity-ready graphics cards with DisplayPorts from AMD came to be, some manufacturers sold cheap $10 DP-DVI dongles that pass DVI signals from the DP directly (passive conversion). Such dongles more often don't work, because Radeon GPUs don't give out DVI signals from DP. Active adapters (those which actively convert DP signals to DVI) were sold at the time in upwards of $100.

AMD has managed to bring the price of such active adapters down to $30. There however, is a limitation. The output is a single-link DVI, meaning that it will support digital resolutions only up to 1920 x 1200 @ 60 Hz (1080p is supported). It shouldn't matter for the target users, because the DisplayPort on ATI Radeon HD 5000 graphics cards conveys only one TMDS link, so even with a DVI dual-link capable adapter, it would only give out single-link output. At least a bulk of the users are covered, at a very affordable price point. AMD will market this adapter directly, and through its growing network of add-in board partners (in bundles with graphics cards, or directly). PowerColor beat AMD to today's announcement, and released PowerColor-branded AMD-reference DP-DVI adapter last week.


http://www.techpowerup.com/129900/AM...ity-Users.html

DP has no tdms link, the single or dual link tdms is IN THE ACTUAL adapter, hence active.
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