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CrossFire issues or CPU bottleneck?

post #1 of 9
Thread Starter 
Hey guys, I got my second 7950 today...(see sig for rig details). I tried each card individually, they scored as they should in my tests (Unigine, Bf3, 3DMark). Cards are stock at 1000/1250

Testing BF3 with CFX enabled however, in Alborz Mountain, 64 players, I achieve an average of 84 FPS, but the GPU usage us around 60% for both. I have no problem with 84 FPS but I feel like something is wrong?

Multiplayer:


Upon testing two maps in single player (Sword Breaker and some other map I can't remember... frown.gif ) I got an average of 120FPS and this is how the usage looked like:



Unigine:




3DMark GPU score:
http://www.3dmark.com/3dm11/6744051



I don't know if I'm up to mark, or something is wrong...can you guys enlighten me? redface.gif
Sorry for if I'm writing bad English and being inarticulate...2:35AM here and I've been testing my new toys the past 8 hours.
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post #2 of 9
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post #3 of 9
That is a very CPU intensive game. Back on my old 7970 with my 8120 @ 4.2 Ghz, I had pretty unstable framerates as well until I switched in my 3770k. It is definitely the 8120 that's holding you back a bit.

However, also understand that you are running at 1440p, which is significantly more intensive for BF3 than standard 1080p.
post #4 of 9
Thread Starter 
OH NO WAIT...I sold that monitor. I'm back at 1080p. Sorry about that. But I definitely feel that it's my 8120. But since I don't know what to expect for xfire, I'm asking to be sure.
Edited by vinton13 - 6/17/13 at 11:45pm
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post #5 of 9
CPU bottleneck. Try turning down the mesh settings to low. It will help as that setting is CPU intensive.
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post #6 of 9
Quote:
Originally Posted by Swolern View Post

CPU bottleneck. Try turning down the mesh settings to low. It will help as that setting is CPU intensive.

^This and also, don't use MSAA. The 8120 chugs when that's on. FXAA on High will be fine (IMO at least). I'd switch the 7970's into the 3770k rig. That would yield greater performance.

Edit: That rig must have disappeared or I'm seeing things... thinking.gif
post #7 of 9
Thread Starter 
Quote:
Originally Posted by truestorybro545 View Post

^This and also, don't use MSAA. The 8120 chugs when that's on. FXAA on High will be fine (IMO at least). I'd switch the 7970's into the 3770k rig. That would yield greater performance.

Good idea, I'll bring it home a day and try it.
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post #8 of 9
Thread Starter 
No it's there...lolz....I wanted to remove it since i don't have that rig at this house at all...but I was like naaah and I put it back. It's the 3AM messing with me.
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post #9 of 9
Thread Starter 
Anyways...thanks guys. Rep'd
I'll try switching around the cards to the other rig when I bring it home. Bad idea to make a thread when I'm this beat.
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Samsung 850 EVO 500GB Samsung 850 EVO 1TB Samsung SH-224BB CM Hyper 212 EVO 
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Windows 8.1 x64 Pro Asus PB278Q (1440p) Gigabyte Aivia Osmium (Cherry Red) Corsair AX850 
CaseMouseMouse PadAudio
Cooler Master HAF X Gigabyte Aivia Krypton Razer Goliathus Extended Speed Edition Realtek ALC1150 8-Channel + Logitech z906 + Sam... 
CPUMotherboardGraphicsGraphics
i7-4790K EVGA Z97 Classified EVGA GTX 780Ti EVGA GTX 780Ti 
RAMHard DriveHard DriveHard Drive
Dominator Platinum Spinpoint F3 Spinpoint F3 510 Series 
Hard DriveHard DriveCoolingCooling
510 Series 320 Series XSPC AX120 XSPC AX360 
CoolingCoolingCoolingOS
XSPC AX240 EK Supremacy EK FC780 GTX Ti WIndows 8.1 
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OS X 10.9.3 Yamaski Catleap 120Hz HCP-1200 Air 540 
MouseMouse PadAudioAudio
Razer Deathadder Table Avid Fast Track Duo HiFIMan HE-400 
CPUMotherboardGraphicsRAM
AMD FX-8120 @4.5GHz GIGABYTE GA-990FXA-UD7 GIGABYTE Radeon HD 7950 CrossFired G.SKILL Sniper 1600MHz 2x4GB 
Hard DriveHard DriveOptical DriveCooling
Crucial 64GB m4 1TB WD Black Samsung SH-224BB CM Hyper 212+ 
OSMonitorKeyboardPower
Windows 8.1 x64 Pro Asus PB278Q (1440p) Gigabyte Aivia Osmium Corsair AX850 
CaseMouseMouse PadAudio
CM 690II Gigabyte Aivia Krypton Razer Goliathus Extended Speed Edition Realtek ALC889 + Logitech z906 + Samson SR850 
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