Computer won't accept third screen (2 Monitors, 1 TV)

[aftermidnight]

Hello everyone,

I present to you a question regarding my XFX Radeon HD 6870 Double Dissipation video card.
By some standards this card might be outdated, but I chose it carefully because money is tight and I wanted something to last a while.

That said, I appear to be having some connectivity issues with it.
I have two monitors on my desk connected to the cards DVI slots, and in the past have been unplugging the cables and plugging my screen in each time I wanted to switch from gaming to watching movies.
However, it was advertised that this card can hold up to six screens, so I decided to get a longer HDMI cable and connect my TV to it whilst having my monitors too.
But although it connects, it doesn't appear to support a third screen, or my tv even as second screen through DVI unless both other cables are disconnected.

What am I missing here?

[Pulski]

"To enable support for more than 2 monitors, “active” DisplayPort™ adapters/dongles are required (or monitors with direct DisplayPort™ connectivity must be used)."

http://support.amd.com/us/eyefinity/...y-dongles.aspx

[aftermidnight]

So I need a HDMI to DVI converter... but I don't understand what the usb cable is powering :S

[Deleted]

You need something like this http://www.newegg.com/Product/Produc...82E16814998050 or http://www.newegg.com/Product/Produc...82E16814998051, depending on your card to get more than 2 monitors working.

I can confirm these work (running 4 monitors on a 6870) and they don't take up a usb slot.

[Pulski]

So I need a HDMI to DVI converter... but I don't understand what the usb cable is powering :S

No, not HDMI to DVI. You need to use the Displayports.

[aftermidnight]

Then what is the HDMI port good for If i might be so bold?

[demonskies]

You can use the HDMI port if you want you just need to have a Display port plugged in for it to accept 3 monitors. I have a 5870 running an HDMI to a 27 inch monitor and then the DP adaptor->DVI running one 24 and a DVI to another 24. They have active DP-DVI that dont require a usb port Im using one right now thats made by power color that I got for 20ish bucks a few years ago when Eyefinity was this new cool thing when only dell sold the one connector for like 110 bucks lol.

[Incognito Noctix]

Then what is the HDMI port good for If i might be so bold?

The HDMI port is linked to one of the two DVI ports, so you essentially have only 2 monitor ports usable, not counting the DisplayPorts.

[aftermidnight]

Alright, this makes somewhat sense to me; I need a DisplayPort to DVI plug then!
Thanks