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Carl

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Since: Jun 26, 2005
Posts: 24



(Msg. 1) Posted: Sat Dec 08, 2007 4:00 pm
Post subject: New HD3870
Archived from groups: alt>comp>periphs>videocards>ati (more info?)

Hello all, I would like to know if the crossfire will work if I have an
HD3870, then later on, add one of the new dual core GPUs?

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John Adams

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Since: Nov 20, 2007
Posts: 25



(Msg. 2) Posted: Sun Dec 09, 2007 1:00 am
Post subject: Re: New HD3870 [Login to view extended thread Info.]
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Carl wrote:
> Hello all, I would like to know if the crossfire will work if I have an
> HD3870, then later on, add one of the new dual core GPUs?

What new dual core GPU's? I doubt it would work as they must be the same
cards. At least that is how Nvidia's SLI works, maybe it is different
for Crossfire but I doubt it. Game support for Crossfire is not very
good anyway.

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Carl

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Since: Jun 26, 2005
Posts: 24



(Msg. 3) Posted: Sun Dec 09, 2007 2:00 am
Post subject: Re: New HD3870 [Login to view extended thread Info.]
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RE: What new dual core GPU's? I doubt it would work as they must be the
same
cards. At least that is how Nvidia's SLI works, maybe it is different
for Crossfire but I doubt it. Game support for Crossfire is not very
good anyway.


ATI has a dual processor GPU available in the new year. Older iterations of
crossfire allowed different models of card to work together, ie a high end
and a midrange card, or, in the case or that fatal1ty branded motherboard,
for the onboard graphics chip to work with a PCI express ATi graphics card.
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Augustus

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Since: Jan 21, 2006
Posts: 356



(Msg. 4) Posted: Sun Dec 09, 2007 12:00 pm
Post subject: Re: New HD3870 [Login to view extended thread Info.]
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"Carl" <ma.RemoveThis@theworld.universe> wrote in message
news:R7CdnZtJBdNUGcbanZ2dnUVZ8rednZ2d@bt.com...
> RE: What new dual core GPU's? I doubt it would work as they must be
> the same
> cards. At least that is how Nvidia's SLI works, maybe it is different
> for Crossfire but I doubt it. Game support for Crossfire is not very
> good anyway.
>
>
> ATI has a dual processor GPU available in the new year. Older iterations
> of crossfire allowed different models of card to work together, ie a high
> end and a midrange card, or, in the case or that fatal1ty branded
> motherboard, for the onboard graphics chip to work with a PCI express ATi
> graphics card.

Yes, they do but in a Crossfire setup, they all run at the slowest speed of
the various installed cards. Which is one big reason why the Nvidia SLI
setup is more desirable and restrictive as to what pairs with what since
perfromance is the entire point.. If ATI does release a new dual core GPU
unit, odds are it's be an even faster clocked flagship product and latching
an HD3870 onto it, if even possible, would slow it down.
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First of One

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Since: Mar 14, 2007
Posts: 491



(Msg. 5) Posted: Sun Dec 09, 2007 12:28 pm
Post subject: Re: New HD3870 [Login to view extended thread Info.]
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You talking about the HD3870 X2? That card consists of two HD3870 GPUs
running in Crossfire mode on a single board, similar to the Rage Fury Maxx
and Voodoo5 5500.

Theoretically, using the HD3870 X2 along with your existing card would be
3-way Crossfire. The performance boost over a 2-way Crossfire setup (i.e.
just the X2 board) would be minimal, because Crossfire doesn't scale
linearly.

--
"War is the continuation of politics by other means.
It can therefore be said that politics is war without
bloodshed while war is politics with bloodshed."


"Carl" <ma.TakeThisOut@theworld.universe> wrote in message
news:8cmdndB2wLxlZsfanZ2dnUVZ8v-dnZ2d@bt.com...
> Hello all, I would like to know if the crossfire will work if I have an
> HD3870, then later on, add one of the new dual core GPUs?
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Carl

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Since: Jun 26, 2005
Posts: 24



(Msg. 6) Posted: Sun Dec 09, 2007 1:00 pm
Post subject: Re: New HD3870 [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Thanks, Augustus. What I intend to do is put the 3870 into my second PC, I
bought it to do me until the new year, as my HD2900XT is returned to the
seller for testing, and I had read that this new dual core GPU is two 3870's
on the one board. But, time will tell! I thought that, in Crossfire, that if
you have a faster card and a slower card, that the workload is split say 70-
30 between the faster card and the slower card?
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Carl

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Since: Jun 26, 2005
Posts: 24



(Msg. 7) Posted: Sun Dec 09, 2007 4:00 pm
Post subject: Re: New HD3870 [Login to view extended thread Info.]
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John Adams

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Since: Nov 20, 2007
Posts: 25



(Msg. 8) Posted: Mon Dec 10, 2007 5:00 pm
Post subject: Re: New HD3870 [Login to view extended thread Info.]
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Carl wrote:

>
> ATI has a dual processor GPU available in the new year. Older iterations
> of crossfire allowed different models of card to work together, ie a
> high end and a midrange card, or, in the case or that fatal1ty branded
> motherboard, for the onboard graphics chip to work with a PCI express
> ATi graphics card.

OK, didn't know that. I already have dual core GPU. 7950GX2. Smile
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