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Two HD 3870 X2 on Intell or only AMD chipset?

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January 8, 2008 9:32:55 PM

Hi all,

I was waiting till end this month to buy a new pc with 2 of the new ATI HD 3870 X2 (so 2x2GPU=4).

See : http://www.legitreviews.com/article/593/1/
and : http://www.fudzilla.com/index.php?option=com_content&ta...

I'd like the intel quad 6600 cpu (since it has the best benchmarks compared to the AMD quadcores) but I was wondering if a board like the Asus Maximus Formula Special Edition with 2 PCIe 2.0 (both 16x) would work since it has the Intell X38 chip with crossfire support but not crossfireX as the AMD 970FX chipset.

As I understand it : CrossfireX = 4 GPU or 4 cards and crossfire is with 2 GPU or 2 cards. But what happens now with 2 GPU's on one card as in the new ATI HD 3870 X2 ?

So will I be able to use 2 ATI HD 3870 X2 cards in the Asus Maximus Formula Special Edition or will I need to get a AMD MB with crossfireX?
January 8, 2008 10:17:40 PM

no crossfirex = more then 2 that means 3,4 or more

intel will run 2 double gpu cards!

crossfirex works with intel with the 3850 cards not the 3870 - f'n amd messing with ati again!
January 9, 2008 10:30:56 AM

So you are saying I'll need to get a MB with a AMD chipset to run crossfire HD3870 2X cards with a slower AMD cpu...
But I could run the slower crossfire HD3850 2X on the intel 38X chipset with a faster intel quad cpu.

Sounds like AMD / ATI does not want the high end market.
They will drive them to the quad SLI nVidia 9800 (also with 2 cards) since they can be combined with the faster intel cpu's.

Maybe I should wait a few extra weeks and get that in stead?
I'm afraid those will be much more expensive... :heink: 

:pfff:  my current rack is getting very slow and I had allready postponed getting a new system several times, maybe I should get the current quad HD3870 AMD Crossfire X system from AMD.

http://www.amd-unleash2.com/index.php?lang=en

Anybody have this, any comments compared to the new cards?
I understand the new cards have the same GPU's, they are just combined on the same card. Would this be faster?
Related resources
January 9, 2008 11:07:57 AM

Second that MrsBytch
January 9, 2008 11:07:58 AM

Quote:
Well Ive seen benches on the Phenom 9500 overclocked to 2.8 and it slightly outperforms the Q6600 at 2.8 and its also cheaper. Secondly, AMD is bound to have better chips by Q2 or, you could just go with a fast dual core and upgrade to quad later when they are better and cheaper.

Interesting. Would you mind sharing those benchmarks?
January 9, 2008 11:17:54 AM

tjoepie said:
So you are saying I'll need to get a MB with a AMD chipset to run crossfire HD3870 2X cards with a slower AMD cpu...
But I could run the slower crossfire HD3850 2X on the intel 38X chipset with a faster intel quad cpu.

Sounds like AMD / ATI does not want the high end market.
They will drive them to the quad SLI nVidia 9800 (also with 2 cards) since they can be combined with the faster intel cpu's.

Maybe I should wait a few extra weeks and get that in stead?
I'm afraid those will be much more expensive... :heink: 

:pfff:  my current rack is getting very slow and I had allready postponed getting a new system several times, maybe I should get the current quad HD3870 AMD Crossfire X system from AMD.

http://www.amd-unleash2.com/index.php?lang=en

Anybody have this, any comments compared to the new cards?
I understand the new cards have the same GPU's, they are just combined on the same card. Would this be faster?


Dragonsprayer is a little confusing and i can't really pinpoint what he is talking about, but it is possible to run 2 3850 or 2 3870 cards on an intel x38 or 975 chipset. Just do a quick google search and you will find plenty of benchmarks using the 975 setup to compare the 8800 series to the 38xx series on the same board.
a b U Graphics card
January 9, 2008 11:47:45 AM

Yeah, a lot of confusing info posted here.
Go here for the facts: http://ati.amd.com/technology/crossfire/faq.html
2- 3870's or 2 3850's WILL work in crossfire on any board with a 965, 975, 35, or 38 series chipset, and of course 2 PCIe slots.
January 9, 2008 12:00:18 PM

Quote:
Yes Im looking for them, yet again. I cant seem to find it. However I think it said the 9500 at 2.8 performed slightly better than a Q6600 at stock (2.66). However, its expected that the new AMD chipsets will offer better performance AND better overclockability than the current ones.
Also Ive seen the 9500 for less than $200 now.
For me, it all comes down to Price. The Phenom 9500 is ~$200 and the decent MSI K9A2 CF is ~$100. So, you could have a quad-core crossfire ready system for ~$300, just about $30 more than a Q6600, not even taking into account the cost of a crossfire capable motherboard.


I found them for you.

http://xbitlabs.com/articles/cpu/display/amd-phenom_11....

Oh Wait, Sorry.
These are the ones showing an Maxed Out Phenom OC'd to 3.0 Ghz losing the the Q6600 @ Stock as often as not and losing almost all matches to the Q6700 which is simply the Q6600 running @ 2.66 Ghz.

Now, If you want performance just OC your Q6600 to 3.4-3.6Ghz w/o a problem.
If Price is a Concern, Grab a $80 E2160 and OC it.
That will beat a 3.0Ghz Black Edition Phenom in most games.
January 9, 2008 12:16:50 PM

lol fanboism?
January 9, 2008 12:49:33 PM

I have just noticed something with the second pic. None the sites have been allowed to show the back of the card. If you look closely at the second pic you can see the back of the card and the heatsink brackets around what must be both the gpu's.
January 9, 2008 1:54:45 PM

Leaked 3870X2 Pics and 3D mark scores (2560x1600 w/stock Q6600):
http://my.ocworkbench.com/bbs/showthread.php?p=425431#p...

:
:
:

Looks like the design has changed a bit from the pictures we saw a couple months ago of the card, all of the RAM is on the front now and under the heatsink.
9573 3D marks at that resolution seems like a start, but still waiting to see how it performs in games.
January 9, 2008 2:54:28 PM

Have you seen the rez that it gets those results at. If that is a real result and considering thats vista thats very good.
a c 87 U Graphics card
a b À AMD
January 9, 2008 3:52:12 PM

yay, thats more like it!
Lets just hope that card is cheaper than 2 normal 3870s. :p 
January 9, 2008 4:30:09 PM

The thing I was actually wondering is if the intel board would run 2 of the dual GPU cards (so actually quad GPU's).

The new R680 is essentially two RV670 GPU cores on the same board = HD 3870 2X

see http://www.fudzilla.com/index.php?option=com_content&ta...

Here we read :

R680 is already known as Radeon 3870 X2, and it should be available later this month or early next month. ... and even in Skulltrail Intel was happy to tell the world that it supports two RV670 cards; and that with the right driver it can even do four cards.

What do they mean with "in Skulltrail" ?

I guess that the X48 chipset will some day (?) be able to run two Radeon 3870 X2 in crossfire.

I'll wait and see the next two weeks for more reviews.

Or get a Phenom end of this month with a crossfireX MB and hope those can handle 4 GPU's on two cards since they are build to handle 4 GPU's on 4 cards.

I'm gonna get a 24" monitor and I'd like to run all games and apps on full 1920 res.

Anyway I much appreciate all the input!
January 9, 2008 4:53:58 PM

do you have to have a crossfire board for that dual gpu card I have a nivida nforce 4 sli board
January 9, 2008 5:04:26 PM

@tjoepie - jitpublisher answered your question above.

Skulltrail is Intel's upcoming enthusiast platform which is based off of a xenon server mobo. It will be very expensive, beyond the 2 CPUs it uses FB-DIMM RAM. Personally, I wouldn't even consider this as an option.

January 9, 2008 5:07:23 PM

Intel chipsets should handle 2 3870 X2s, but you will not be able to put 4 3870 X2s together even with crossfirex because the cards will only have one crossfire connector instead of 2. You can see on the pic posted in this thread there is only one crossfire connector on it. Amddiesel you can run the dual gpu card in any board as long as it has a PCI-x 16 slot.
January 9, 2008 5:13:42 PM

I thought I remembered reading somewhere that the new Radeon 3XXXs do not require the crossfire bridge connector to run in crossfire w/ certain PCIe 2.0 chipsets.
January 9, 2008 5:22:24 PM

badgtx1969 said:

Skulltrail is Intel's upcoming enthusiast platform which is based off of a xenon server mobo. It will be very expensive, beyond the 2 CPUs it uses FB-DIMM RAM. Personally, I wouldn't even consider this as an option.

I didn't know that intels server boards come with 2 pin sockets, but the blue team never stops to amaze me. I guess it would be the first server visible from outer space. I can already imagine a batman like intel logo projected into the night sky.



PS: At least you didn't say duel CPU board, so it's all in good fun. ;) 
January 9, 2008 5:43:34 PM

^FYI, of course I was referring to all of the blue lights on that snazzy case they first previewed it in!

P.S. - How did you pass up the chance to go after the typo in this thread's title? I am wondering if your grammar is really as impeccable as it seems: http://news.bbc.co.uk/1/hi/magazine/4246472.stm
I surprisingly scored 16/20, 2 of my wrong answers were obviously spelling Qs!
January 9, 2008 6:02:09 PM

http://www.legitreviews.com/article/593/1/

says in the review that these dont need the 4-pci slots as they are obviously dual gpu cards

but does that mean two of them can run on a crossfire X38 board with 2x PCI-E 2.0 16x/16x in crossfire?

I'd like to run 2 of these cards on a Asus Maximus Formula Special Edition with a intell qaud core 6600 CPU. I hope you are correct San Pedro...

Sorry AMDdiesel, SLI is only for Nvidia, crossfire is the almost the same but for ATI.
But don't worry, in feb Nvidia will launch dual gpu cards aswell (9800 series). But they will probably be more expensive...
January 9, 2008 7:19:13 PM

Two of these should work in an X38, think of it as Crossfiring the two 16x lanes as opposed to the cards - it's two physical connections being Crossfired as the cards operate as a single unit even though they have two cores.
January 9, 2008 8:34:52 PM

Thanks Jevon, that seems logical... I really hope there will be some reviews soon with more info.
January 10, 2008 7:38:03 AM

I was thinking, yes it happens sometimes and it hurts ;-) , It must be possible:

Or else you would need crosfire to run even a single card with 2 gpu's on any MB and I don't think ATI would limits sales due to this.
January 10, 2008 7:48:33 AM

ya - i apologies sometime i right on here its like sleep-typing its 4am

ok-you can run 3 or more 3850's on intel chipset - drivers are not ready for 3870 - wink wink that means amd will not let intel build an intel spider - we cal it SuperSipder =ss

intel SS is only for 3850 if want drivers

now - you can run crossfire with out any issues!

that means you can run the hd 3870 x2 in crossfire 4 gpu's

i will confirm this with amd and post again

i am setting up $4-$5k systems for these quad gpu systems based on X38 maximus ddr3 - i am really going to be pissed if i do not get my quad system. the 3 rd pci-e is for raid card its a bad boy!

now there is a 3rd possibility the asus mobo with 3 pci-e is crosslinx - maybe asus will configure some drivers? we will see - asus is useless for info - great products - bottom of fish barrel tech support
January 10, 2008 7:49:53 AM

has anyone seen specks to the length of this card it looks like a problem getting it in a case
January 10, 2008 7:53:09 AM

ya its big

i am using a antec 900 and i am taking out the middle bay to psuh the card into

i would say from this photo its 12-14inches

January 10, 2008 8:00:23 AM



here are 2 more so you can see they are bigger then the mobo



--------------



this really does not look any bigge then an 8800GTX which is 11 inches so they look 11-12inches
January 10, 2008 10:09:12 PM

Thanks Dragonsprayer, I hope they answer you, I haven't had any luck...

!