Crossfire X Thread

AphexDreamer · Jan 2, 2008

I have been trying to dig up more information on this CrossFire X and Hybrid CrossFireing, but I can't really find anything that mentions useing two diffrent GPUS's.

Anyone got some sources on this stuff???

imperialreign · Jan 2, 2008

http://www.crossfirex.info/

http://game.amd.com/us-en/unlock_crossfire.aspx

AphexDreamer · Jan 2, 2008

imperialreign said:
http://www.crossfirex.info/

Thanks, but thats the stuff I already new about CrossFireX, Heck thats the stuff the old crossfire would do as well, where are the details...

imperialreign · Jan 2, 2008

srry, got a little ahead of myself with those links :eek:

I've only found a ton of info concerning Intel's P45 chipset to support CrossfireX . . .

As the rumored driver release date looms (mid Jan, round about CAT 8.1 I assume), I'm sure AMD/ATI will update the CrossfireX page.

i_dog_69 · Jan 2, 2008

in regards to that other forum, i havent even heard of that site before. that is crazy because the verbage is so close. i can assure you that i was just looking for some more info on crossfire, and so far the posts have been great. thanks guys! GO TPU :toast:

i_dog_69 · Jan 2, 2008

also, i know that you can use a 3 card setup using the 3rd card for physics but what about using the 3rd card for rendering also, or can you use 2 cards for physics and one for rendering?( i.e. i have 2 x1300's and a 3870). maybe its a stupid question but i am just wondering. cheers! :toast:

btarunr · Jan 2, 2008

Read post #41

ShadowFold · Jan 2, 2008

Um I think you need a card that says CrossfireX on the box like my HD 3850. So I think you need to get a HD 3000 series to do this.

adrianx · Jan 10, 2008

soo.... no one run's with 3 or 4 cards in crossfire so far?

Ok, very soon I will try (not buy) o crossfire with 2x3850 and one 3870

I simple dont know how to set the connectors... (I was a nvidia fun until the crysis driver problems with 8800GT).

my logic say... if the 4 cards use 3 bridge and 2 cards use one...from that my logic say... with 3 card I will use 2 crossfire bridge...

If I will succes I will need to set 3870 to 3850 settings to have a ~ 3x3850 configuration...

so.. I will try to convince my friend with 3870 to ... come at my home and let my ..try ...

the driver 7.12 and 7.11 I see on the net that cand run on a configuration like dual 3870x2 (2 x2gpu on bord)

this is the link

http://au.gamespot.com/video/939217/6184393/ces-2008-amd-booth-tour

so I dont know if is a close beta driver or the official driver. will see

btarunr · Jan 10, 2008

^Don't do that before you get the drivers, it's pointless as there's no driver for Crossfire X yet, forget doing it with dissimilar GPU's. Catalyst 7.1x still doesn't take in 3~4 cards.

Append: If you do come up with something, share it here

Bytor · Jan 11, 2008

I just installed a Asus M3A32-MVP MB and have 2 X1950 pro's running on it. I have 2 HD3870's in the mail to me right now.
I want to try crossfiring all 4 cards on my board just to seeif it will work, but wondering how you would connect the crossfire bridges?

btarunr · Jan 11, 2008

Bytor said:
I just installed a Asus M3A32-MVP MB and have 2 X1950 pro's running on it. I have 2 HD3870's in the mail to me right now.
I want to try crossfiring all 4 cards on my board just to seeif it will work, but wondering how you would connect the crossfire bridges?

^The drivers to it aren't out yet. You'll have to wait. Regarding Asymmetric CrossFire (use of dissimilar cards), you'll have to wait a little longer, the whole thing is very sketchy right now.

Bytor · Jan 11, 2008

Thanks for the drawing, clears things up.

btarunr · Jan 23, 2008

A quick update on the Crossfire X (4-card) interconnect bridge arrangement:

It is confirmed on the way the interconnect bridges are arranged as you can see from this image: http://www.amd.com/us-en/assets/content_type/DigitalMedia/44367A_AR-CFMoboQuadmd.png (1.80 MB, high resolution, PNG)

Makes me wonder which motherboard is that in the pic.

Lazzer408 · Jan 23, 2008

Almost looks like the K9A2 Platinum, almost.

twicksisted · Jan 23, 2008

this will surely mean that you have seriously undervuntilated and hot cards....
two of them are pressed against eachother with about 1mm to spare!!!

Surely they would overheat in this configuration?

btarunr · Jan 23, 2008

Lazzer408 said:
Almost looks like the K9A2 Platinum, almost.

The last expansion slon on a K9A2 Platinum is a PCI-E. The PCB layout is definitely different.

twicksisted said:
this will surely mean that you have seriously undervuntilated and hot cards....
two of them are pressed against eachother with about 1mm to spare!!!

Surely they would overheat in this configuration?

It all boils down to motherboard layout, be it AMD 790FX or Intel X48 the arrangement of the PCI-E slots determines ventilation. In boards such as the Gigabyte GA-790FX-DQ6, the PCI-E slots are in a chain, and cards 2 and 3 will be literally cooked if there isn't a large ventilating fan to the chasis' side-panel. But in boards such as the MSI K9A2 Platinum they are spread apart to a comfort level. The larger issue is that of double-slot video cards which won't fit which is why Sapphire and HIS are working on single-slot cooler designs for the Radeon HD3870 cards.

twicksisted · Jan 23, 2008

still.. anyone who is going to go to the length of having 4 of gthem, wants maximum performance, and that means that they will probably end up overclocking them...

theres not even space for a waterblock and tubes lol...

still interesting... though id rather have 2 3870X2 cards in normal crossfire over this from a price, heat and simplicity point of view

Lazzer408 · Jan 23, 2008

twicksisted said:
still.. anyone who is going to go to the length of having 4 of gthem, wants maximum performance, and that means that they will probably end up overclocking them...

theres not even space for a waterblock and tubes lol...

still interesting... though id rather have 2 3870X2 cards in normal crossfire over this from a price, heat and simplicity point of view

Give it time and you can probably have 4 3870x2 cards. Marketing departments will catch on sooner or later and sell it wether it works or not. :laugh:

btarunr · Jan 23, 2008

I could be wrong but the release drivers of HD3870 X2 will not support two cards in Crossfire. Tom's Hardware had a superb pre-release review of the HD3870 X2 this morning but the webmasters seemed to have removed it. They had mentioned about this.

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Crossfire X Thread

AphexDreamer

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