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Just got my 5870, this can't be right...

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I have the same motherboard and 5850 instead of the 5870. I'm having the same 1min bios problem but windows experience is fine. I'll try disabling the unused sata ports to see if it helps. The hang up happens before the bios screen even pops up and it looks like the system power cycles 6-8 times before it finally kicks in. Also going to try resetting cmos.
 
I just registered to throw in my experience too:

I have an ATI 5870 saphire card, I was using it for several weeks and had a WEI score of 7.8 for Graphics and 7.8 for Gaming Graphics. Later I reinstalled my OS because I bought two new SSD drives, and my score was now showing up as 6.0.

I tried so many different things to troubleshoot this, and finally I reverted to the original disc that came with the 5870 card instead of the latest drivers from ATI... and sure enough that fixed the problem.
 
You have an insane bottleneck issue, and you are starving for memory.

You don't put a 4 cylinder Toyota engine in a dragster and expect it to be fast do you? Your GPU is the dragster and the 4-cylinder is your computer and its components. I know the analogy is backwards, but it is true.

You need to upgrade your whole computer if you want to take "full" advantage of the 5870. This is where you should have done your homework before purchasing a $400 piece of hardware.

I seriously do not believe any of the 5800 series GPUs should be ran with anything other than a Phenom II OC'ed to atleast 3.8ghz, a C2Q OC'ed to atleast 4ghz or a Core i5/i7 OC'ed to atleast 3.6ghz.

I don't think that C2D are a wise investment at all anymore.

edit: I even know for a fact that my i7 @ 4.1ghz is a "serious" bottleneck for these 3 cards in tri-fire. I can't wait for the 32nm 6core/12thread CPUs come out! With that OC'ed to atleast 4.5ghz, I'd say my bottleneck issue will be a thing of the past 🙂
 
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Just to add my 2 cents, I was having a similar issue with the Windows Experience Index (Windows 7 x64), only getting 6.0. I've been struggling with other issues since I installed my 5850, as I had to rearrange my SATA plugs due to crappy motherboard layout. My OCZ Vertex slowed right down, but its back up to speed now I've given it an IDE channel to itself (crappy IDE/SATA chipset sharing issues.)

Anyway, after a couple of card reseatings and moving stuff around things started working again, and my 5850 shot up to 7.7 Gaming Graphics. I have concerns about my power supply being up to the job too, but things are working now ::shrug::
 
Just to confirm 3D graphics WEI in Win7 x64 on 5870 is indeed showing lower than 8800GTX. .3 difference in fact. Drivers, disregard.

While i agree with comments about bottlenecking CPU and insufficient memory, resolution is the biggest setback in your case. So much in fact i see little reason to upgrade from a single 8800GT, let along two – hardly b4b-efficient unless you only play FPSs/somehow need highest possible FPSs. Ss?

Boot issue – definitely hardware. If earlier suggestions of disabling secondary IDE/SATA controller do not work try manually setting different voltage/speed for PCIE, changing video buffer size/use/initialisation settings, dis/enabling ACPI, moving your boot disk to primary SATA/IDE channel/controller. Even check your PSU’s voltages (unlikely to be the case here).
 
No idea about the long POST, but the scores? You have a "first gen" Core 2 chip and not overclocked either. And Crysis is the most resource hungry game, both for processor and GPU power... Be glad you got those 9 FPS more and not a similar number in the end.

It's high time for a CPU upgrade if you wish for your HD5870 to shine. A Core i5 750 at least imo. Even stock it will kill that C2D of yours in every game and give some breathing room for the Radeon. Of course OCing it will help even more.

EDIT: Also 2GB RAM? Get to 4GB ASAP.
 
No idea about the post thing but your experience with what you have is about right. I just went from a 4850 to a 5850 and I'm getting around the same fps in crysis as you are posting. I definately bottlenecked but my fps also almost doubled as I'm playing at 1920x1200 rez very high settings. My specs: e5200 oced to 3.4 with 4 gigs ram. I'm waiting to upgrade to next generation cpu(s). When I try crysis at 1680x1050 it gets just a few more fps more than at 1920 rez. Definately bottlenecked.
 
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