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Bottlenecking with 5850's in Crossfire?

post #1 of 4
Thread Starter 
Hi all,
I'm currently using a Phenom II X3 720BE with the 4th core unlocked running at stock clocks, due to some thermal issues.

With my current configuration of this powering two 5850's I get regular performance in some older games like Metro 2033 and Just Cause 2. However with some newer games like Batman AC, Saint's Row 3, the Witcher 2, Serious Sam 3, and Planetside 2, I get negative scaling.

Would a 720BE with that fourth core unlocked really be a big bottleneck on these GPU's or does it sound like something else could be wrong with my setup?

Thanks
Mr. Fluffykins
(13 items)
 
Sager NP8130
(5 items)
 
 
CPUMotherboardGraphicsRAM
Phenom II 720BE (4th core unlocked) @ 3.4 GHZ Asus M4A79XTD Evo 2 x Powercolor 5850 ADATA 4 gb @ 1600mhz 
Hard DriveOptical DriveOSMonitor
320 gb, 2 x 750 gb Seagates 7200rpm LG DVD read/write Windows 7 Ultimate x64 Asus 242H 23.6" 
KeyboardPowerCaseMouse
Razer Lycosa Corsair TX750 NZXT Phantom Razer Mamba 
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Steel Series Qck Heavy 
CPUGraphicsRAMHard Drive
i7 2670QM Nvidia 560M 8 GB 1333MHZ 500 GB 7200RPM 
OS
Window 7 Ultimate 64 bit 
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Mr. Fluffykins
(13 items)
 
Sager NP8130
(5 items)
 
 
CPUMotherboardGraphicsRAM
Phenom II 720BE (4th core unlocked) @ 3.4 GHZ Asus M4A79XTD Evo 2 x Powercolor 5850 ADATA 4 gb @ 1600mhz 
Hard DriveOptical DriveOSMonitor
320 gb, 2 x 750 gb Seagates 7200rpm LG DVD read/write Windows 7 Ultimate x64 Asus 242H 23.6" 
KeyboardPowerCaseMouse
Razer Lycosa Corsair TX750 NZXT Phantom Razer Mamba 
Mouse Pad
Steel Series Qck Heavy 
CPUGraphicsRAMHard Drive
i7 2670QM Nvidia 560M 8 GB 1333MHZ 500 GB 7200RPM 
OS
Window 7 Ultimate 64 bit 
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post #2 of 4
you need at least 4GHz to alleviate bn. i had a 7970 with my phenom quad and managed to play those games. bf3 sp and co-op no issues but mp it struggled. my only saving grace is this chip unlocks to six cores and it helped a lot.
Second Intel Rig
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Second Intel Rig
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2700 4.5/ 1.28 77 290 (2) 16 / 1866 
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post #3 of 4
Are your drivers and CAPs up to date?
BlueRaven
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Dead BIOS
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Intel Core i7 G74Sx NVIDIA GeForce GTX 560M  Samsung  
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BlueRaven
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Dead BIOS
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CPUMotherboardGraphicsRAM
Intel Core i7 G74Sx NVIDIA GeForce GTX 560M  Samsung  
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Logitech G700 
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post #4 of 4
Thread Starter 
Quote:
Originally Posted by That Guy View Post

Are your drivers and CAPs up to date?

Yeah, I've made sure that I had clean driver installs each time. I think the other poster is right about the clock speeds bottlenecking my performance. But my chip doesn't seem to have a lot of stable OC headroom, so I might be better off investing in a new CPU at this point.
Mr. Fluffykins
(13 items)
 
Sager NP8130
(5 items)
 
 
CPUMotherboardGraphicsRAM
Phenom II 720BE (4th core unlocked) @ 3.4 GHZ Asus M4A79XTD Evo 2 x Powercolor 5850 ADATA 4 gb @ 1600mhz 
Hard DriveOptical DriveOSMonitor
320 gb, 2 x 750 gb Seagates 7200rpm LG DVD read/write Windows 7 Ultimate x64 Asus 242H 23.6" 
KeyboardPowerCaseMouse
Razer Lycosa Corsair TX750 NZXT Phantom Razer Mamba 
Mouse Pad
Steel Series Qck Heavy 
CPUGraphicsRAMHard Drive
i7 2670QM Nvidia 560M 8 GB 1333MHZ 500 GB 7200RPM 
OS
Window 7 Ultimate 64 bit 
  hide details  
Reply
Mr. Fluffykins
(13 items)
 
Sager NP8130
(5 items)
 
 
CPUMotherboardGraphicsRAM
Phenom II 720BE (4th core unlocked) @ 3.4 GHZ Asus M4A79XTD Evo 2 x Powercolor 5850 ADATA 4 gb @ 1600mhz 
Hard DriveOptical DriveOSMonitor
320 gb, 2 x 750 gb Seagates 7200rpm LG DVD read/write Windows 7 Ultimate x64 Asus 242H 23.6" 
KeyboardPowerCaseMouse
Razer Lycosa Corsair TX750 NZXT Phantom Razer Mamba 
Mouse Pad
Steel Series Qck Heavy 
CPUGraphicsRAMHard Drive
i7 2670QM Nvidia 560M 8 GB 1333MHZ 500 GB 7200RPM 
OS
Window 7 Ultimate 64 bit 
  hide details  
Reply
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