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Huge differences in Crysis with 3 5870s

Last response: in Graphics & Displays
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February 10, 2010 8:39:46 PM

I just got my trifire setup with 5870s, and the problem I am having is that for my Win7 games partition, I installed the 10.1 drivers and then Crysis and Warhead, (nothing else yet) Ran it at 2560*1600 with 8xAA and maxed every setting. Both games I'm getting around 2-5fps under win7. Under winXP, I'm using the same drivers, and getting 30-40+FPS with the EXACT same settings (very playable).

The Win7 parition is on a hdd all by itself it's a Seagate Barracuda 7200.10 250GB drive.

The winXp partition is on a 500GB hdd with 3 paritions on it (one with XP 64, one with Vista64, and one with backup stuff. it's a WD Caviar blue 500GB hard drive

I'm running an ASUS M3A78-T deluxe with 8GB ram, PII965 @ 3.4,

Can win7 really be that big of a difference, or could it be that big of a difference reading from the hard drives??

February 10, 2010 9:47:03 PM

Both the hard drives (7200.10, Caviar Blue 500GB) are not good.
Caviar blue's performance is quite lackluster (mainly for NAS/Storage/Backup).
I would reinstall Win7, then Catalyst, then the 5800 hotfix.
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February 10, 2010 10:40:23 PM

I wouldn't say the HDD would cause that much difference, sounds like a driver issue. Make sure you have the right ones in the right place.
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February 10, 2010 10:42:27 PM

microterf said:
I just got my trifire setup with 5870s, and the problem I am having is that for my Win7 games partition, I installed the 10.1 drivers and then Crysis and Warhead, (nothing else yet) Ran it at 2560*1600 with 8xAA and maxed every setting. Both games I'm getting around 2-5fps under win7. Under winXP, I'm using the same drivers, and getting 30-40+FPS with the EXACT same settings (very playable).

The Win7 parition is on a hdd all by itself it's a Seagate Barracuda 7200.10 250GB drive.

The winXp partition is on a 500GB hdd with 3 paritions on it (one with XP 64, one with Vista64, and one with backup stuff. it's a WD Caviar blue 500GB hard drive

I'm running an ASUS M3A78-T deluxe with 8GB ram, PII965 @ 3.4,

Can win7 really be that big of a difference, or could it be that big of a difference reading from the hard drives??


When you say you maxed all settings, do you max the settings when running them under Windows 7 too, or set them to be equal to Windows XP, meaning running DX9 instead of DX10 and .. is it High setting, instead of Very High?
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February 11, 2010 1:52:18 AM

I have the settings maxed as high as I can on both. High on XP, but Very high on Win 7 both 2560 and 8xAA
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February 11, 2010 2:20:15 AM

is there a way to change the settings to DX9 manually?
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February 11, 2010 2:32:20 AM

Yes, in Windows Game Explorer; right click Crysis, then press DX9.
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February 11, 2010 2:48:01 AM

"Crysis’ has always had a problem with multi-GPU arrays at 2560x1600 with AA enabled, so these particular results are meaningless."

Take a look at this page of the review, its all going well until 2560x1600 where it tanks.
http://www.tomshardware.com/reviews/p55-crossfire-nf200...

This is a known software error unfortunately.
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February 11, 2010 2:54:22 AM

Have you tried to see how it works with just 2 in Crossfire? I'm running a CF setup and it runs very well in Win 7. It's possible that Tri-fire could have troubles with win 7.

At least it would help you find out where to look.
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February 11, 2010 11:59:33 AM

I will have to check when i get home about running it in DX9 mode. I was suprised to see the results of that THG post showing the poor performance of Crysis even with 3x5870s so I'm thinking that maybe DX10 is the culprit here.
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February 11, 2010 7:33:22 PM

Well, He's running High in Xp, an Very High in win 7, so that whats what with the FPS loss.
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February 14, 2010 1:17:36 AM

I had the same issues running in DX9 mode under win7.
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