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Windows 7: I7 3770K Bottlenecking?


06 Nov 2012   #1

Windows 7 Ultimate 64x
 
 
I7 3770K Bottlenecking?

Hey guys hope all is well and would like to ask for some input on a problem I'm facing :|.

I've recently built a rig for somebody and he is having issues (performance wise) in bf3, mohw ect
He is currently using Windows 8, he had the same issue on Windows 7, spent loads of money trying to eliminate this issue, including spending another 350 on a 120hz monitor, also compared with Hyperthreading on and off, personally I can't see it being a i7.

His gpu usage does not stay above 75% usage on both cards, even tried overclocking his I7 to 4.8GHZ, so do you think the beast of a i7 he has can really bottleneck is gpu cards, specs are below:

i7 3770k @ 4.8 ghz
Asrock z77 Extreme6 Motherboard
8gb Corsair Vengeance @ 1600mhz
2 AMD 7950's in crossfire
Antec watercooler
Corsair TX850w
OCZ SSD 128gb (windows 8 64x)
Western Digital 2tb green drive storage.
5 120mm case fans.


My System SpecsSystem Spec
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06 Nov 2012   #2

Windows 7 professional X64
 
 

Uhm, so he is getting low FPS, tearing...what?
Try taking one of the 7950's out and run the game with just one.
My System SpecsSystem Spec
06 Nov 2012   #3

Windows 7 Home Premium 64bit
 
 

If its lag and stutter due to server lag, no amount of twaeking or hardware upgrades will fix it.

@ 75% GPU use, the cards aren't working full load to do the job. So Im not sure that its a issue with the cards. Unless on the driver side and properly working Crossifre support for BF3.
The i7 should have no issues keeping up on its end.

I would tend to agree that disabling crossfire temporarily and running just one card will help identify if its a hardware/driver issue.
My System SpecsSystem Spec
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06 Nov 2012   #4

Win 7 Pro 64-bit 7601
 
 

Meh, theoretically that i7 cannot bottleneck a GPU.
You could try disabling core parking. That did show some effects in the past to me. In short: unused CPU cores are put to sleep by Windows 7, this saves power, but since CPU load comes in spikes, sleeping cores waste time to go online again, so you have a non-maxed CPU graph (as the load isn't so heavy), and yet getting slowdowns. this seems to affect GPUs as well as it's the CPU that feeds them raw stuff to process.

I also agree with Eric, maybe one of the cards is having issues, and being in crossfire the good one dials itself down to run the same as the crappier one. Make sure drivers are uptodate.

Quote:
spent loads of money trying to eliminate this issue, including spending another 350 on a 120hz monitor
ehm, how is a better monitor going to help GPU?
My System SpecsSystem Spec
06 Nov 2012   #5

Windows 7 Professional 64bit SP1
 
 

Several people are having problems running multiple AMD cards in Crossfire.......examples are extremely low FPS, crazy glitching/stuttering and some flat out won't play. Try one card with the newest AMD driver and see how that works. The 3770K likely has nothing to do with it.
My System SpecsSystem Spec
06 Nov 2012   #6

Windows 7 Ultimate 64x
 
 

thanks for all your replies :-), he is getting very low fps, why he got the monitor i dont know, he has tried the latest driver and the beta one its still the same, he even asked if it could be psu related but surely the 850w Corsair should be up too the job.

That suggestion about windows 7 disabling inactive cores? does that work in windows 8 aswell? and if so how would one go by disabling that feature? he said the issue he is really getting annoyed with is he will be playing at around 90 average fps peaking to 120ish and the fps will dip to about 47 making the game really choppy and feeling like 20fps, then will shoot back up is this common? he has disabled.one card for the time being lets just hope AMD release a driver soon.

Thanks again guys really appreciate the input :-)
My System SpecsSystem Spec
07 Nov 2012   #7

 
 

With the CPU @ 4.8ghz - there is zero bottleneck. Psu is fine too.

AMD has always had a bit of a 'history' with drivers and the Frostbite engine. Particularly dual/multi GPU. I assume he has all the CAP profiles installed as well?

The 120hz monitor could be causing some issues (obviously it's harder to maintain a steady 120fps than 60fps) - disable vsync to see if has an impact.

Disabling inactive cores/core parking does absolutely nothing. (I've tested) The issue does not lie there.


Has he installed a 3rd party AV in Win 8 at all?
My System SpecsSystem Spec
07 Nov 2012   #8

Windows 7 Ultimate 64x
 
 

Hey bud, he was getting the issue before he got the 120hz monitor, for what I believe he tried a 90 and 120fps lock, the 120fps lock seemed to improve the "microstutter and frame rate drop" but not alot, he did tell me that some times when he turned his pc on with crossfire enabled his pc would fail to start, would just lock on the welcome black screen.

Could this just really be bad coding in games for crossfire and sli? or could it just be a driver issue? the cards work flawlesly when on there own.

He dont have a anti virus installed.

thanks bud for the input
My System SpecsSystem Spec
07 Nov 2012   #9

Windows 7 professional X64
 
 

Drops to 47FPS and feels like 20. That's a rather silly experience.
Disable Vsync, use a fps limiter. Your eyes cannot perceive past 60fps, so I really don't see what is the deal with people wanting a million hz monitor. You will never notice a difference whatsoever.

You are saying that the trouble goes away when he uses only one card correct?
Personally I thought one 7950 was overkill for such low end games, two is ridiculous, specially if you expected those sort of games to take advantage of crossfire, and on top of that crossfire can be tricky, as it is commonly tied with jerkiness when not set up correctly, and when the software cannot even take advantage of it. Why else do you think you are only getting 75% usage?
My System SpecsSystem Spec
07 Nov 2012   #10

 
 

Quote   Quote: Originally Posted by Erick Aguilar View Post
Drops to 47FPS and feels like 20. That's a rather silly experience.
Hence the reason help is being requested.


Quote:
Your eyes cannot perceive past 60fps, so I really don't see what is the deal with people wanting a million hz monitor. You will never notice a difference whatsoever.
Much debatable personal opinion. Either way it has no bearing on the issue.

Quote:
You are saying that the trouble goes away when he uses only one card correct?
Minimized - not eradicated.


Quote:
Personally I thought one 7950 was overkill for such low end games, two is ridiculous
BF3 is not 'low end'. To max out BF3 you need multi cards. (Particularly since he went and bought a 120hz monitor )





Quote:
Why else do you think you are only getting 75% usage?
Drivers play a huge part in that.



Quote   Quote: Originally Posted by Adam23 View Post
he did tell me that some times when he turned his pc on with crossfire enabled his pc would fail to start, would just lock on the welcome black screen.
That's not a great sign.

Does his games/PC ever lock up?
My System SpecsSystem Spec
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