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4GHZ Thuban Bottleneck? - Page 3

post #21 of 146
First you said it wasn't a bottleneck because the cpu wasn't at 100%, then you said you weren't talking about all 6 cores, then you said you understood that even if the game was maxing out 2 cores windows would spread those threads threads over multiple cores.

So yeah, I'm confused.
    
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post #22 of 146
Thread Starter 
Cards seem stable, and are at stock speeds. No evidence of artifacting etc etc.

Man, I just wish this rig would behave like advertised.
    
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post #23 of 146
did you overclock the NB? 4 GHZ on cpu only is not enough.

Get that NB up to 2600 and you will see a sizable FPS increase around 5-9 FPS higher in some games...

http://www.anandtech.com/show/3877/a...ance-scaling/7

shows what happens when you OC the nb...
     
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post #24 of 146
Quote:
Originally Posted by BallaTheFeared View Post
First you said it wasn't a bottleneck because the cpu wasn't at 100%, then you said you weren't talking about all 6 cores, then you said you understood that even if the game was maxing out 2 cores windows would spread those threads threads over multiple cores.

So yeah, I'm confused.
Well done on confusing your self, its pretty simple.

Quote:
Originally Posted by loki_reborn View Post
Cards seem stable, and are at stock speeds. No evidence of artifacting etc etc.

Man, I just wish this rig would behave like advertised.
Okay.

So if you drop your CPU clock down to stock and then try running games, do you get even lower GPU usage?
post #25 of 146
Thread Starter 
Will grab some screenshots of various CPU speeds when I get home.

Working the night shift at the moment.
    
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post #26 of 146
Thread Starter 
NB is at 2870

Running the CPU at stock gives me

1920 x 1080 no AA



Barely any difference between this and 4Ghz. I am still getting CPU bound on one core and gimping my second 5870. With one card running I get 97FPS in the mech bay, then going full screen gets me 104FPS. Next to no scaling whatsoever, just a change from 99/0% usage to 50/50%.

Looks like this chip is going out to pasture one way or the other as I can never get it completely stable above 4.1Ghz.
    
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post #27 of 146
Quote:
Originally Posted by loki_reborn View Post
NB is at 2870

Running the CPU at stock gives me

1920 x 1080 no AA



Barely any difference between this and 4Ghz. I am still getting CPU bound on one core and gimping my second 5870. With one card running I get 97FPS in the mech bay, then going full screen gets me 104FPS. Next to no scaling whatsoever, just a change from 99/0% usage to 50/50%.

Looks like this chip is going out to pasture one way or the other as I can never get it completely stable above 4.1Ghz.
If overclocking the CPU from 3.2GHz too 4GHz doesn't make a difference, I do not think this is you CPU, since upping the performance of the CPU largely does not make a difference and I'm here with a fairly similar setup getting great scaling.

I find my crossfire works in both windowed mode and in full screen mode.
What happens if you physically remove one of the cards?

Also if you could take a GPUZ screen shot of both cards, I'l be able to compare them to mine.

You saying next to no scaling what so ever, which is right but is very strange. Have you changed any settings in CCC? There's a Vsync option in there so force it on all the time.

Just to be sure, is this the only game you have tried? Have you tried anything else and experienced the same thing?
post #28 of 146
Try rolling back to some older drivers and see if that changes anything.
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Dripping wet
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post #29 of 146
Quote:
Originally Posted by loki_reborn View Post
NB is at 2870

Running the CPU at stock gives me

1920 x 1080 no AA



Barely any difference between this and 4Ghz. I am still getting CPU bound on one core and gimping my second 5870. With one card running I get 97FPS in the mech bay, then going full screen gets me 104FPS. Next to no scaling whatsoever, just a change from 99/0% usage to 50/50%.

Looks like this chip is going out to pasture one way or the other as I can never get it completely stable above 4.1Ghz.
I don't believe the 2nd GPU is even necessary at that rez, you won't see much performance increase unless you benchmark instead of game.

Edit - Your CPU-NB seems pretty high, are you 100% positive it is stable at that speed?
Edited by tout - 5/2/11 at 2:16am
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post #30 of 146
Thread Starter 


Screen of Dirt 2, EVERYTHING maxed out @ 1920x1080 with cores loaded evenly, and near 100% scaling.

I just don't think this chip has the balls to max out MWLL.
    
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