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7870 Dual VGA Monitor Question


ed89

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Hi all just a question. I have just bought an Asus 7870 with I thought 2 DVI connections. So here is my dilemma, I have two VGA monitors, so I connect both the adapter so it will plug into the DVI slot perfect I then try it in the other DVI slot and it won't fit. I'm baffled as they look the same however I do notice that one has DVI/VGA written beside it and the other one just DVI but both look the same.

So my question is what do I need to buy converter wise to make this work it also has a HDMI and a display port.

Link to what my graphics card has port wise:http://www.asus.com/Graphics_Cards/HD7870DC2TG2GD5V2

D-Sub Output X1 (through DVI to D-Sub adapter) DVI Output X1 (Native) HDMI Output X1 (Native) DisplayPort Output X2 (Native mini DisplayPort)

I also e-mailed Asus and they said:

"1x Dual-link DVI-D 1x Dual-link DVI-I I am afraid to tell you that you need to use two different converters."

This was supplied with the GFX card - 1x DVI to D-sub adaptor

I have managed to confuse myself heaps can someone link me what adapter I need to buy to get my other monitor to work!

Many thanks

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Chronos the 2nd

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There are two different DVI connections on your graphics card.

Look at this chart here Video connections. Your main DVI connection will be the second one down and your secondary DVI connection will be the fourth one down. Note the four pin holes missing between the two. I suspect you have bought two DVI adapters ,where as you should have bought one DVI-I adapter and one DVI-D adapter. These can be picked on fleabay for a little over £2.

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Fruit Bat /\0/\

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What you need is a true DVI-D to VGA converter not cheap

see here

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ed89

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Thanks for the responses guys. Does it have to be Active, I guess that's what bumps up price.

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Chronos the 2nd

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No it certainly does not have to be active, I still have an old VGA monitor that I use on occasion and a cheapo adapter is all you need, similar to what I linked to earlier.

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ed89

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So yer it seems that I'm after a DVI-D adapter - Im reading people say that it needs to be active because DVI is digital?

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ed89

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although my DVI-I adapter defiantly isn't passive

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Chronos the 2nd

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My apologies to fruit bat as it looks as though he is correct and that you will need a active adapter, been many years since I only had a monitor with just a VGA connection. It seems an expensive solution with the active DVI to VGA adapter.

Have you looked at either Display Port to VGA or a HDMI to VGA adapter which look a bit cheaper?

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