Has anyone seen active DisplayPort-->DVI adapters for sale yet?

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aka1nas

Diamond Member
Aug 30, 2001
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As the Radeon 5870 provides 2 DVIs and a Displayport connection, you'll need a DisplayPort adapter to hook up a 3rd DVI panel. The passive adapters can only support 1920x1080 and require the video device's display port to be capable of trnasmitting a DVI signal (no idea if the 5870 can do this).

Has anyone seen a good active adapter on sale anywhere? I'm having trouble finding one online.
 
jlee

jlee

Lifer
Sep 12, 2001
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Monoprice has the cable pretty cheap, but I'm not sure if it needs the $$$ Apple adapter as well.
 
WaitingForNehalem

WaitingForNehalem

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Aug 24, 2008
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Originally posted by: aka1nas
As the Radeon 5870 provides 2 DVIs and a Displayport connection, you'll need a DisplayPort adapter to hook up a 3rd DVI panel. The passive adapters can only support 1920x1080 and require the video device's display port to be capable of trnasmitting a DVI signal (no idea if the 5870 can do this).

Has anyone seen a good active adapter on sale anywhere? I'm having trouble finding one online.
Click to expand...

Why not use the HDMI port?
 
exar333

exar333

Diamond Member
Feb 7, 2004
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I thought Apple was one of the few to sell this, and it's not cheap.
 
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Idontcare

Elite Member
Oct 10, 1999
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Originally posted by: aka1nas
The passive adapters can only support 1920x1080 and require the video device's display port to be capable of trnasmitting a DVI signal (no idea if the 5870 can do this).
Click to expand...

Are you serious!? So that means I can't for example hook up three DVI-based Dell WF2408's to an HD5870 and drive all three displays at 1920x1200 resolution?

Or would I be able to get away with an HDMI->DVI adapter as WaitingForNehalem is suggesting?
 
Qbah

Qbah

Diamond Member
Oct 18, 2005
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Originally posted by: Idontcare
Originally posted by: aka1nas
The passive adapters can only support 1920x1080 and require the video device's display port to be capable of trnasmitting a DVI signal (no idea if the 5870 can do this).
Click to expand...

Are you serious!? So that means I can't for example hook up three DVI-based Dell WF2408's to an HD5870 and drive all three displays at 1920x1200 resolution?

Or would I be able to get away with an HDMI->DVI adapter as WaitingForNehalem is suggesting?
Click to expand...

From what's been gathered the HDMI "shares" its connection with one of the DVI ports. So no dice on the 2xDVI + HDMI. The third monitor needs to be DisplayPort...

Would be nice if someone with 3 LCDs and a HD5870 could 100% confirm that though :)
 
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aka1nas

Diamond Member
Aug 30, 2001
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Originally posted by: WaitingForNehalem
Any way you could put in a 4350 and make it work with the 5870?
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Eyefinity is single-gpu only at this time. Dual cards would be ok if you just want 3 independent displays.
 
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thilanliyan

Lifer
Jun 21, 2005
12,042
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Originally posted by: aka1nas
Originally posted by: WaitingForNehalem
Any way you could put in a 4350 and make it work with the 5870?
Click to expand...

Eyefinity is single-gpu only at this time. Dual cards would be ok if you just want 3 independent displays.
Click to expand...

Are you sure? The demo where they had 24 displays being driven was done by 2x5870x2 wasn't it? Or was it 4x5870 "Six" model? Either way I think you can do it on multiple cards.
 
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aka1nas

Diamond Member
Aug 30, 2001
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According to all the reviews, it was all being rendered by a single GPU as Crossfire isn't supported yet while SLS is enabled. The 24-panel demo was four of the "Six" cards. I don't think anyone ever gave perform numbers for the 24-panel demo, and it was FS:X anyway. You can probably get away with 20 fps or so there and not notice as it's not a very twitchy game.
 
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thilanliyan

Lifer
Jun 21, 2005
12,042
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Ah okay sorry I thought you meant you HAD to run it on a single card. So you can run it on multiple cards...it's just XFire won't work...gotcha.
 
gorobei

gorobei

Diamond Member
Jan 7, 2007
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why would you need an adapter? the 2408wfp has a displayport connection as well as 2 x dvi, 1 x vga, 1 x hdmi.
 
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Tempered81

Diamond Member
Jan 29, 2007
6,374
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adapter has to be active to support HDCP flags since 3rd clock generator on cypress can only be ran though Displayport. DP supports daisychaining and multiple displays on single clock. You can't use the $20 adapters or dongles.

 
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aka1nas

Diamond Member
Aug 30, 2001
4,335
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I'm starting to see reports on other forums that are confirming that a passive adapter will not work with this card. :(
 
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tommo123

Platinum Member
Sep 25, 2005
2,617
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i'm sure i found one somewhere that was active and in the $20 range. i however am in the UK and the ones here are the weird apple ones which cost stupid money or are passive only. Hopefully, there'll be options for us brits in jan when i plan to get a 5870

EDIT

how about this?

to quote:

These are active adapters that convert the signals, so they should work with any DisplayPort Device!
Click to expand...

 
Qbah

Qbah

Diamond Member
Oct 18, 2005
3,754
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Originally posted by: tommo123
ihow about this?

to quote:

These are active adapters that convert the signals, so they should work with any DisplayPort Device!
Click to expand...
Click to expand...

That is A LOT more reasonable. Says it supports HDCP and is an active device. So this one should work. Great find! :thumbsup:
 
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