Sudden LOW GPU utilization. (xFire HD5870m)

Hello, forum!

When launching BF3 today, i suddenly got aware of an really low GPU-utlization percentage pr. card, which resultet in dropping my FPS down to about 20-30 FPS. I checked my temps, and no cores were dangerously hot at all, so i'm wondering about why this is happening.

Does anyone know why it would be this way?
The utilization of each core is under 45%.


Screenshot;
http://i40.tinypic.com/30bh2ll.png

Does anyone have a clue about the sudden drop? They're usually up to 95-97% on utilization in BF3.

- Scott.

 

is it only for BF3 that you experience low xfire utilization? Have you reinstall drivers lately?

I will try turning off crossfire and see if single card utilize 99-100%, then if it does I will re-enable xfire and test multiple games to make sure it works fine.

You can also try to use driversweeper to remove any ATI display files and do a clean install of 11.10 drivers which came out recently

 

Stealth mode?

 

Well, i disabeled Crossfire and then the one GPU would run on 99% fine with 40-50 fps. Thats even better than what i get with Crossfire activated.

Don't think its stealth mode, rebooted many times to see if it would solve the problem.


This is the last time i'm buying a crossfire-setup, its been more of a pain in the than its been fun..

- InZelux

 

if you're using the latest 11.10 driver, then that may be the cause. there're alot of issue with bf3 with the new driver from amd that can be corrected with some tweaks. i don't play bf3 but google them and you will find the solutions. good luck

 

I've looked at a couple of tweaks now, nothing seems to work..
Now, only my secondary (#1) card is giving 30% utlization in BF3, whilst the primary (#0) is not doing at all.


What the heck?

Edit;
Ok, so, what the ?
Now i'm currently getting displayed 9 FPS with 0% utilization on both GPUs.


- Scott.

Edit:
DLing to try another game now.
No driver mods have been done.

Currently running 11.10 with CAP4

Edit2:

I just opened up the ingame performance-overlay for battlefield 3 and i got theese values;
CPU: 30 FPS - 27,50 AVG (average)
GPU: 53,70 - 39 AVG (average)

Does this mean that my CPU is the bottleneck in this case? How is that even possible with a 2,4 ghz quad-core processor?

 

what are your temps like? Something getting throttled?

 

No core, or chip, or device in the computer is above 70 degrees celcius on max-load (CPU burn-in test + GPU burn-in test).

That is not hot at all, in my oppinion..
- Scott.

 

you're right...70c is not hot especially for OC'ed 5870's

now if you set the clocks on the vid cards back to stock, you're still having issues?

Usually with computers, when you use one card, it runs fine, but two doesn't, the first things i think of are

1)drivers
2)temps
3)power (or lack of..i.e., powersupply isnt cutting it anymore)

If you've verified all three, then you have to look at the hardware

 

Put your old cards back in and see if it's the 5870's acting up.

 

Ill try to do a full reinstall of all an everything and see how that works out.

Anyhow, one card is working fine with 50 FPS, but im dying to get this Crossfire to at least do the same. (For f*** sake, its two cards, they should AT LEAST deliver the same ammount of power as one.)

I did pull the clocks back, but it didn't change anything, in fact, it just worsened the case in some cases.


I'm doing a full reinstall now and i will try the performance first with the DELL official drivers, then the 11.9, 11.9 with CAP4, 11.10, 11.10 with CAP4.

I'll keep you guys posted. Getting everything "set up" again will probably take an hour or so.

- Scott

 

I had the same problem, I'm not sure what happened but I flashed my bios to the modded bios applied a 5% OC and then made sure I wasn't in stealth mode and my system started to perform adequately.

 

Is there a way to check for the stealth mode? Wouldn't just a regular reboot fix that? I've never touched the stealth mode button on the panel.


Edit: do you also have a link for the modded vBIOS?

- Scott.