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Terrible performance with C2D/P5K in Crossfire - Page 2

post #11 of 92
Check CPUz and see what the PCI Express link is. I may only be running at 1x or 4x.
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post #12 of 92
Thread Starter 
Quote:
Originally Posted by pauldovi View Post
Check CPUz and see what the PCI Express link is. I may only be running at 1x or 4x.
Huh I didn't know that CPU-Z could report PCI-E status. Cool, rep.....Not that you need it
I'll check that out when I get back from work....forgot to install my remote desktop software :\\
A new BIOS was released today as well
The P35 chipset is supposed to run at 4X, just like the 975X. However the ATI driver team was able to extract some great performance from that. The bandwidth seems like it would have enough room for data transfer....maybe compression comes into play after leaving the GPU.
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post #13 of 92
Uh, the 975X runs 8x/8x.

The P965 runs 16x/4x
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post #14 of 92
MY F Mark is way low compared to my 975X
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post #15 of 92
keep us posted. i'm running Cat 7.6 on XP and my performance seems fine. of course, i didn't notice any problems with 7.5 either, so maybe i just don't pay that much attention. i got 6,708 on 3DMark06 and 13,000 on 3DMark05.
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post #16 of 92
Thread Starter 
Quote:
Originally Posted by Ihatethedukes View Post
Uh, the 975X runs 8x/8x.

The P965 runs 16x/4x
Oh ok I thought that they both ran 16/4. Well I read reviews on both and they seemed to have decent performance. We'll see after a few driver releases I guess. I sent a feedback email to the Catalyst team.......fingers crossed.
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post #17 of 92
The P35 runs at 8x/8x, did your old chipset run 16x/16x CrossFire? If so, that might be it. The only thing you can do is: overclock. A Core 2 Duo at 3.2GHz would probably rape your older system. Oh, and, you could overclock your graphics cards as well.

NiNja
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post #18 of 92
Thread Starter 
Yea they're overclocked from the box, and overclocking on my cards won't do much. The older card that I have OCs to 661.5/823.5, but the newer one won't OC at all....or black screen (I could be wrong, haven't tried much since the new mobo)
BTW, I know for a fact that the P5K deluxe runs 16X/4X, but if you are using one of the 1X PCI-E slots it runs the second PCI-E 16X slot in 1X mode.....eww

When I get home from work I'm going to play around with some settings more, but I have the PEG impeller (ASUS Crossfire 'booster' or something), but I can't find the PCI-E lane width option in the BIOS anywhere. It mentions it in the booklet under the PCI-E layout section, but it doesn't show the path...
Also another BIOS has been released today, so I'll see what's up with that.
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PWNzershreck
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post #19 of 92
Quote:
Originally Posted by Ninja_Boy View Post
The P35 runs at 8x/8x, did your old chipset run 16x/16x CrossFire? If so, that might be it. The only thing you can do is: overclock. A Core 2 Duo at 3.2GHz would probably rape your older system. Oh, and, you could overclock your graphics cards as well.

NiNja
P35 runs 16x4, not 8x8.
975X runs 8x8 and not 16x16. The first intel chipset to do that will be X38 coming out within 2 months. Nvidia chipsets and AMD chipsets run 16x16 for a long time already.

You really have a new mobo with a new chipset.
Be shure to update your Catalysts to the latest version (unlike what was posted before about using old ones, the latest catalysts are also updated for P35 use).
Download the latest bios and install it. The performance of the MSI P35 platinum board increased with 20% by using the latest bios.

If that doesnt help the only thing to do is stick around, wait, and repeat the steps above. The P35 had a really short development state in terms of BIOS and software so the performance will increase in time.

Some info from anandtech on the P35 performance:
Quote:
After discussing our results with MSI it was obvious they understood what needed to occur to bring the performance of the board up to the standards set by ASUS and Gigabyte. However, they just had not had enough engineering time with the P35 chipsets and like others had expected the retail launch to happen on June 4th and not the helter-skelter unofficial availability in early May. Still, MSI promised us the performance of this board would improve quickly.
Source

Crossfire benchmarks from 975X compared to P35:
Quote:
While not always the fastest solution for an R600 CrossFire platform it does offer a level of consistency and stability that is not always present on the P35. We fully expect the P35 to perform significantly better in several areas once AMD has the time to tune their drivers for it. For now we understand and accept this lack of optimization, but that does not mean we like it.
Source

So now you know, patience is the key with early adopters
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Blue Ruby
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post #20 of 92
Thread Starter 
Yea I kinda thought the future ATI driver releases would fix the issue. I'm running the latest 7.6 Catalyst, so no worries there. I'm about to update ot the latest BIOS as we speak!
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PWNzershreck
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