Best motherboard for high(ish)-end Crossfire system?

nrb

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Feb 22, 2006
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Okay, this a shameless, newbie-ish plea for help. :) It may, in fact, be the first of several, with similar pleas appearing in other sub-fora, but let us consider the motherboard question for now.

I'm going to be putting a new system together in a month or two, and, if everything pans out the way I'm hoping, it will be based on a pair of R600 video cards in Crossfire mode. That might, of course, change, either because ATI just gives up and doesn't release R600 at all (and let's be honest, the cancellation of the March 11th Editors' Day is not a good sign) or because, when it does eventually crawl out the door, it may turn out to be inferior to the as-yet-also-unreleased 8900GTX. However, let us assume for the moment that R600 does ship in April, and that it does perform at least on a par with Nvidia's G80 refresh; the question then is, what motherboard would be appropriate?

For a CPU I'm currently thinking about a Core 2 Duo E6600, hopefully clocked up to about 3GHz, perhaps using a Tuniq Tower 120 as a cooler. I might still have a sudden attack of profligacy and buy a Core 2 Quad chip, but that's a lot of money to pay just to get better performance when playing Alan Wake. :) (Sadly I don't think I can wait long enough to see how AMD's Barcelona works out - if I had to wait that long I'd give up and go with 8900GTX SLI instead!).

So: are there actually any C2D motherboards that are suitable for a high-end Crossfire system? I don't fancy the idea of trying to hack an Nvidia 680 board to run Crossfire. The Intel P965 chipset overclocks very nicely, but (if I understand correctly) it's not happy with Crossfire. The ATI RD600 looked very promising right up to the point when it actually launched, but it's turned out to be a serious damp squib, not least because of the miserable clock-for-clock performance. That pretty much leaves me with the rapidly ageing Intel 975X chipset and (perhaps) an Intel Bad Axe 2 board - but that has serious issues with overclocking (compared to its rivals).

Is there any good option out there, or should I just give up? :(
 

Heidfirst

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May 18, 2005
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RD600 may not be any quicker clock for clock than 975/680i etc. but iirc it did have seriously better Crossfire performance.
 

nrb

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Feb 22, 2006
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Originally posted by: Heidfirst
RD600 may not be any quicker clock for clock than 975/680i etc. but iirc it did have seriously better Crossfire performance.
It isn't just "not any quicker" clock-for-clock, it's a lot slower clock-for-clock. You have to overclock it significantly just to get it up to the level of performance that the other chipsets offer at stock speed. (To be fair, it does overclock pretty well).

If you've got a link indicating its superior crossfire performance to 975X, that would be of considerable interest, though. :)

 

seamaster32

Junior Member
Feb 20, 2007
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NRB- Good topic...I have similar concerns.....

After MUCH research and seeing the MANY "features/quirks" of 680i's... I have finally decided that the 680 is too unstable and not for me.. However... Help... I am still perplexed about 975x vs 965. I am planning on purchasing a e6600 and want the capability of oc'ing it to about 3.0 (stable). I need at least 2 gb of fast >=800mhz ram and will probably get the ATI x1950 v-card. Which chipset is better for my req's? Most of what I see that is recommended is old....old in the pc world is >4-6 months (at least for mb's). I agree with your rapidly aging 975x reference...!!!

Any recommendations for newer boards/chipsets?

Peace-
 

Heidfirst

Platinum Member
May 18, 2005
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Originally posted by: nrb
It isn't just "not any quicker" clock-for-clock, it's a lot slower clock-for-clock.
it's about 1.5-2% slower on average

If you've got a link indicating its superior crossfire performance to 975X, that would be of considerable interest, though. :)
well have a look at bit -tech's review for now - but I've seen 1 that ran even higher res. than the 1600x1200 somewhere & iirc it started to pull away slightly from 975X.
 

moosey

Golden Member
Apr 18, 2001
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FYI...Here's a review of the DFI RD600 board
http://enthusiast.hardocp.com/article.html?art=MTI3MiwsLGhlbnRodXNpYXN0

As far as the "aging" comments go for the 975x, it still holds its own in benchmarks being faster clock for clock in some. Also, its mature and is very stable and doesn't suffer from IDE issues that some 965 boards do. Also, it won't change straps on you when you overclock like a lot of the 965 boards. Plus, at least its x8x8 Crossfire unlike P965's x16x4.

For an e6600, that doesn't need real high FSB to o/c, the 975x seems like an easy choice. That's what I ended up with.
 

seamaster32

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Feb 20, 2007
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thx moosey for the reply... though I am till a bit confused. I hear mixed signals all the time regarding mobo's....e6600 ->975x (Why?)

Though renethx ( in this post Core 2 & AM2 Motherboards - Recommendations and Complete Lists
not only recommends 965 for C2D stating they are the best choice but lists the ASUS P5B Deluxe/WiFi-AP as the top choice (P965) and the ASUS P5W DH Deluxe (P975x) as second and the OC-ability is ~100 <

Am I missing something????
 

MxChris

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Nov 11, 2004
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I went with the e6600 and DFI Infinity 975x/g in and 2x x850XT in crossfire mode and got decent performance. I have since had to RMA the board, 2gb of G.Skill DDR2 800 and the slave x850XT, all gave errors at some point.

In the meantime during the RMA I have picked up an 8800GTS so I'm shopping for an SLI board, I like that I could have the option of full 16x + 16x PCI in SLI mode with a 680 board but they look very unstable right now. After I research it a bit more I'm guessing I will probably end up with a 650 based board from ASUS which I think do 8x + 8x in SLI mode.
 

nrb

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Feb 22, 2006
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Thanks for the info. Any other comments are welcome. :)

What's everybody's preferred 975X board? Intel Bad Axe 2? Asus P5W DH Deluxe? Something else?
 

moosey

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Apr 18, 2001
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Originally posted by: seamaster32
thx moosey for the reply... though I am till a bit confused. I hear mixed signals all the time regarding mobo's....e6600 ->975x (Why?)


People generally say 975x with the e6600 b/c you don't need to reach a real high FSB to o/c the chip. P965 boards reach a higher FSB so they're good for overclocking a chip with a lower multiplier. I prefer the 975x also b/c no JMicron issues, it won't change straps on you and it is still fast and mature.

Originally posted by: nrb
Thanks for the info. Any other comments are welcome. :)

What's everybody's preferred 975X board? Intel Bad Axe 2? Asus P5W DH Deluxe? Something else?

Those 2 are the main ones that are recommended.
 

nrb

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Feb 22, 2006
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Are there any reviews that directly compare the Bad Axe 2 and Asus P5W DH Deluxe? I'm curious as to how the DFI Infinity 975X board fits into the picture too.

Anyone want to put in a good word for RD600?

I think I'm currently leaning slightly towards Bad Axe 2, but that's only because of its reputation for being supremely stable. I like stable. Stable is good. :)

I do think the motherboard chipset situation for C2D is really rather poor at the moment. It's not like Intel not to have a definitively good chipset for Intel CPUs out there - historically it's always been the AMD boards that have been flakey. I suppose Bearlake will sort everything out, but I don't think I can wait that long. (Unless they've brought the release forward a bit and I haven't noticed - when are we expecting the first Bearlake boards?)
 

SuicideReign

Junior Member
Feb 24, 2007
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Heh, I'm in the exact same position as far as motherboards go. Upon hearing of the r600 delay I decided to just sli 8800gtxs on a nforce 680i platform and use the evga step up once the 8900 refresh hit.

However, the remaining sata corruption issues, reports of fried memory, etc.. really convinced me not to bother. So it comes down to p965-975x- or rd600. I'm leaning towards the intel solutions given the finickiness of rd600 overclocking and the lower clock per clock performance, however, if it's crossfire is significantly better, that might sway me.

Last I heard of bearlake not being slated till may... And my leeriness at being an early adopter, I really don't know whether I can wait that long or take the plunge on a new platform. However... Assuming they meet the may launch date, that might very well line up well with a r600 launch, but then the question becomes of ddr3 availability.

If i waited I'd want the best, meanwhile I've got my 2 gigs of ddr2 ballistix tracer sitting around waiting for a home... Someone, please enlighten me with conclusive proof, this indecision is killing me.
 

DaddyRabbit

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Jan 6, 2007
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For a CPU I'm currently thinking about a Core 2 Duo E6600, hopefully clocked up to about 3GHz, perhaps using a Tuniq Tower 120 as a cooler

Quite a few people have gotten 3.0G on stock cooling (although I wouldn't run it long at the load temps I saw on stock) I got a Thermaltake Big Typhoon which is right up there with the Tuniq and you should be fine with any 975x board.

That pretty much leaves me with the rapidly ageing Intel 975X chipset and (perhaps) an Intel Bad Axe 2 board - but that has serious issues with overclocking (compared to its rivals)

The BX2 overclocks quite easily actually. While it doesn't get to insane FSB levels like the 865 and Nvidia boards it can very easily get an E6600 to 3.4, and even in some cases 3.6 stable with some tweaking. On my bx2 with E6600 I dropped the RAM freq to DDR2 667 and upped the FSB (took all of one minute) and am happily and quite stably running 3.2g. I did have to get an aftermarket cooler though and it took a lot more than a minute to install (Big Typhoon).