Comments on: (Test) Dummy VGA Dongle with Win7: Three Radeon HD 5770 and a Single Monitor (VGA Hack)

By: mickamer13

mickamer13 — Fri, 12 Aug 2011 08:49:01 +0000

peut-on faire de meme avec deux HD4890.
merci pour vos explications et bravo!!

By: Athlonite

Athlonite — Fri, 01 Jul 2011 07:00:47 +0000

this the same hack as used by use HDxxxx users to get F@H running before they fixed the CF problem

By: ca$per

ca$per — Thu, 23 Jun 2011 07:45:37 +0000

Hmm… So i presume it’s just in idle state. Thanks.
I guess if i need to test some app on Nvidia card and on ATI card, to ease the process i can simply insert both cards in my PC and then just switch the monitor to one or another and simply relaunch the application?

By: Leith Bade

Leith Bade — Thu, 23 Jun 2011 07:41:27 +0000

The fan keeps spinning so I would say so. They would need a special switch on the card’s power input to be able to turn a card off completely but they don’t bother as it is not like you can hot swap PCI cards.

By: ca$per

ca$per — Thu, 23 Jun 2011 05:54:03 +0000

Does disabled cards consume much power? I mean when used without dongle.

By: WacKEDmaN

WacKEDmaN — Thu, 23 Jun 2011 05:46:26 +0000

amd need to add support for headless cards to their driver…
nvidia managed to do it..

By: Leith Bade

Leith Bade — Thu, 23 Jun 2011 01:52:57 +0000

At least in Linux you can enable OpenGL on cards with no screen with a simple X server config hack.

By: JeGX

JeGX — Wed, 22 Jun 2011 15:37:23 +0000

I just tested with one HD 5770 + one GTX 260 + one GT 240 and without the VGA hack, both GeForce are listed in the OpenGL section of GPU Caps Viewer.

Then this VGA hack is mainly useful for Radeon cards.

By: AAmax

AAmax — Wed, 22 Jun 2011 15:14:14 +0000

Separate run on each Radeon then just say saw, very interesting. Not parallel, each unit it’s own run, this is server type stuff.

By: AAmax

AAmax — Wed, 22 Jun 2011 15:00:50 +0000

What do you mean disabled if not connected to a monitor, how then they do it for Physx, they use one fast Radeon and one poor Geforce just for Physx, or was this disabled?

By: MFA

MFA — Wed, 22 Jun 2011 13:33:41 +0000

pure win!