Tom's Hardware > Forum > Graphic & Displays > ATI > Can a ATi 3870X2 Crossfire with a regular 3870?

Can a ATi 3870X2 Crossfire with a regular 3870?

Forum Graphic & Displays : ATI - Can a ATi 3870X2 Crossfire with a regular 3870?

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QUAD-KILL   01-17-2008 at 02:45:38 PM
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Highly unlikely and very doubtful . . . .

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reddozen   01-17-2008 at 03:12:02 PM
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I would say it's a possibility as CFx is supposed to be "up to" 4 GPUs.

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jevon   01-17-2008 at 03:34:06 PM
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Hmm I would say highly likely, but we still have to wait to see how things scale. If the 3870x2 has 1Gb of RAM will it chop that in half to CF with a 512MB 3870? The two GPUs on the x2 should CF with a single 3870 I would think, so to me it sounds kind of like having a total of 3 graphic processing units with 1gb of ram either.

But we'll have to wait and see what ATi gives us for info during the launch, and of course the major sites will benchmark and test the bejesus out of it too.


Message edited by jevon on 01-17-2008 at 04:13:01 PM
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Farmer Brown   01-17-2008 at 08:50:05 PM
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Does anyone know for sure if three cards can run together Im not sure, but the drivers or Bios could limit crossfire to 1,2 or 4 cards.

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bstep1989   01-24-2008 at 08:23:50 AM
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yes they will be be able to crossfire. any card that use the same type of Crossfire interface can CF together, and no it will not cut the 1GB of ram n the X2 in half, it will but just like doing a 3-way crossfireX but only with two cards

------------------------------ all i want to do is bleed blue, but since that wont happen ill be playing video games till i die
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UnrealChrisG   01-29-2008 at 12:23:00 AM
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Has any one been able to test this?

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pchoi04   01-29-2008 at 12:37:24 AM
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I believe it can. I think the Anandtech review stated this. But current drivers do not support this.

------------------------------ Asus P5B Deluxe, Core 2 Quad Q6700, Nvidia 8800GTS (G92), Corsair 4GB PC2 6400, Sound Blaster X-Fi Platinum, Thermaltake 700W PSU
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Mathos   01-29-2008 at 04:05:48 AM
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Yes it can, since the drivers themselves consider the X2 a single card, but, there is no support for crossfire X 3 and 4 way yet.

------------------------------ AMD Phenom X4 9850 Black Edition, ZeroTherm Nirvana 120 Premium CPU Cooler, MSI K9a2 Platinum bios 1.1b3 or P.0J, 4GB (2x2) Mushkin DDR2 1066 (pc8500) 5-5-5-15 2.05v RAM, Sapphire Toxic HD3870, Raidmax RX-700SS PSU, Seagate Barracuda 7200.10 320gb SATA2 X
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UnrealChrisG   02-02-2008 at 11:07:25 AM
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Well, as soon as any one finds out let me know please, ty

Reply to UnrealChrisG
hawkspur   02-02-2008 at 11:21:05 AM
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It's supported hardware wise, but the drivers don't have it enabled yet. So until ATI pops out with the driver optimizations for the X2, the answer is no.

------------------------------ Asus Maximus Extreme : 2x Sapphire HD 3870 in Crossfire 850/1126 : QX9650@4.2Ghz : 2GB OCZ Platinum DDR3-1600 : PC Power and Cooling Silencer 750w : Samsung 22" 226BW 1680x1050 : Thermaltake ArmorPlus : WD 150GB Raptor : 2x Custom Watercooling Loops
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