Overclock.net › Forums › Graphics Cards › AMD/ATI › 0% CF scaling
New Posts  All Forums:Forum Nav:

0% CF scaling

post #1 of 89
Thread Starter 
I have no idea whats going on with these cards. I am getting 0% or even at times negative scaling with my 6970's. I have tried multiple games and the results are all the same. My 5850's scale up to 70-75%. I have tried different drivers and all the same. When I exit a game I make sure the GPU usage on both cards is high, which it is. Both cards are being used and still getting negative scaling. Am I doing something wrong? My games play faster and smoother with just one of the 6970's on. I have also tried switching the cards around with no luck...
post #2 of 89
What games?

Some like multi-GPU some do not.
DD Boxen
(23 items)
 
   
CPUMotherboardGraphicsRAM
Intel Xeon E3-1230 Asus Maximus IV Gene-Z/Gen3 Powercolor 6970 2GB G. Skill 1600mHz Ripjaws 
Hard DriveOptical DriveCoolingCooling
SpinpontF3 1TB, WD 250, and WD320 Lite-On DT Waterblocks DT5Noz Waterblock Swiftech Komodo 6900-1 Waterblock 
CoolingCoolingCoolingOS
Swiftech MCR-220 Drive radiator Swiftech MCR-220 QP radiator 6xGentle Typhoon AP-15s Archx64 KDE4.5, Windows 7 x64 
MonitorKeyboardPowerCase
Eyefinity 3-head 5265x1050 OCN Ducky!! MX Blue Switches XFX 750W Black Edition Mountain Mods H2gO 
MouseAudioAudioAudio
Razer Naga Asus Xonar Essence STX Sennheiser 595 Sony STR-DE995 A/V receiver 
OtherOther
Lian Li Card flash memory reader Asus PCE-N15 Wifi-N card 
CPUMotherboardGraphicsRAM
AMD 1055T Gigabyte 790 Sapphire 4850x2 2x2GB 1600mHz 
Hard DriveOptical DriveOSKeyboard
A few Yes Vista/7 Das Keyboard 
Power
Ugly 
CPUMotherboardGraphicsRAM
Qualcomm Snapdragon APQ8060 1.2 GHz Something kinda small Qualcomm Adreno core 16GB 
Hard DriveOptical DriveOSMonitor
None N/A WebOS 3.0.2 9.7" XGA, multitouch 
PowerCase
6300mAh Piano Black 
  hide details  
Reply
DD Boxen
(23 items)
 
   
CPUMotherboardGraphicsRAM
Intel Xeon E3-1230 Asus Maximus IV Gene-Z/Gen3 Powercolor 6970 2GB G. Skill 1600mHz Ripjaws 
Hard DriveOptical DriveCoolingCooling
SpinpontF3 1TB, WD 250, and WD320 Lite-On DT Waterblocks DT5Noz Waterblock Swiftech Komodo 6900-1 Waterblock 
CoolingCoolingCoolingOS
Swiftech MCR-220 Drive radiator Swiftech MCR-220 QP radiator 6xGentle Typhoon AP-15s Archx64 KDE4.5, Windows 7 x64 
MonitorKeyboardPowerCase
Eyefinity 3-head 5265x1050 OCN Ducky!! MX Blue Switches XFX 750W Black Edition Mountain Mods H2gO 
MouseAudioAudioAudio
Razer Naga Asus Xonar Essence STX Sennheiser 595 Sony STR-DE995 A/V receiver 
OtherOther
Lian Li Card flash memory reader Asus PCE-N15 Wifi-N card 
CPUMotherboardGraphicsRAM
AMD 1055T Gigabyte 790 Sapphire 4850x2 2x2GB 1600mHz 
Hard DriveOptical DriveOSKeyboard
A few Yes Vista/7 Das Keyboard 
Power
Ugly 
CPUMotherboardGraphicsRAM
Qualcomm Snapdragon APQ8060 1.2 GHz Something kinda small Qualcomm Adreno core 16GB 
Hard DriveOptical DriveOSMonitor
None N/A WebOS 3.0.2 9.7" XGA, multitouch 
PowerCase
6300mAh Piano Black 
  hide details  
Reply
post #3 of 89
Did crossfire some how get disabled? I've had it happen before.
    
CPUMotherboardGraphicsRAM
Phenom ii X4 965BE ASUS Crosshair IV Formula Sapphire HD5770 and VaporX 5770 4x2GB G-Skill 1600MHz 
Hard DriveOptical DriveOSMonitor
2x Samsung 320 gig (RAID 0) WD 500 gig ASUS DVD drive Win 7 64 bit and Ubuntu 10.10 3x Acer P215H 
KeyboardPowerCaseMouse
Microsoft sidewinder Corsair 650Watt HAF X G9x 
Mouse Pad
X Trac Ripper 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Phenom ii X4 965BE ASUS Crosshair IV Formula Sapphire HD5770 and VaporX 5770 4x2GB G-Skill 1600MHz 
Hard DriveOptical DriveOSMonitor
2x Samsung 320 gig (RAID 0) WD 500 gig ASUS DVD drive Win 7 64 bit and Ubuntu 10.10 3x Acer P215H 
KeyboardPowerCaseMouse
Microsoft sidewinder Corsair 650Watt HAF X G9x 
Mouse Pad
X Trac Ripper 
  hide details  
Reply
post #4 of 89
Thread Starter 
Crysis, negative scaling from average 40-45fps on 4800x900 to around 30-35fps with CF enabled. BFBC2 no increase at all. Average 45fps @ 4800x900. On Left for Dead 2. No CF scaling. FPS stays around 120fps @ 4800x900. This is driving me nuts!!
post #5 of 89
If I am not mistaken, one of your slots works at only x4, where the first is at 16x. It sounds crazy, but I am fairly confident this is your problem. It probably wasnt that big of a deal with 5850s as it is with 6970s.
post #6 of 89
Thread Starter 
Hmm. I see tons of reviews showing the difference between x4 and x16 PCI-e bandwidth and there is only a few FPS difference. Anyone else think this is the issue? My GPU's go to 99% usage while gaming, so it can't be a bottle necked CPU.
post #7 of 89
Both cards identical? Guess I would start looking at the crossfire bridge or PSU. The 6970's do consumer more power, maybe if your PSU is having some minor issues.
Spit in God's Eye
(16 items)
 
  
CPUMotherboardGraphicsRAM
i7-5960x @ 4.26 ghz core / 3.53 ghz uncore - 1.... AsRock X99 Extreme3 EVGA GTX980 Ti 16gb (4x4gb) Crucial DDR4 2133 CL15  
Hard DriveHard DriveHard DriveOptical Drive
A-Data SP600 256gb SSD (C:) Samsung 840 EVO 1TB SSD (D:) Seagate 2TB Hybrid Drive (E:) LITE-ON 24x DVDRW 
CoolingOSMonitorKeyboard
Corsair H110 Win 10 x64 HP 2511x ( 25" 1080p ) AZIO L70 
PowerCaseMouseAudio
Corsair TX750 Antec 300 (Modded) Logitech M100 Onboard 
  hide details  
Reply
Spit in God's Eye
(16 items)
 
  
CPUMotherboardGraphicsRAM
i7-5960x @ 4.26 ghz core / 3.53 ghz uncore - 1.... AsRock X99 Extreme3 EVGA GTX980 Ti 16gb (4x4gb) Crucial DDR4 2133 CL15  
Hard DriveHard DriveHard DriveOptical Drive
A-Data SP600 256gb SSD (C:) Samsung 840 EVO 1TB SSD (D:) Seagate 2TB Hybrid Drive (E:) LITE-ON 24x DVDRW 
CoolingOSMonitorKeyboard
Corsair H110 Win 10 x64 HP 2511x ( 25" 1080p ) AZIO L70 
PowerCaseMouseAudio
Corsair TX750 Antec 300 (Modded) Logitech M100 Onboard 
  hide details  
Reply
post #8 of 89
enable crossfire? plug in 6,8 pins pcie?
    
CPUGraphicsRAMHard Drive
i5-2410M @ 2.9ghz Nvidia GT 540M 1GB DDR3 4GB DDR3 1333mhz 500GB 5400rpm 
OSMonitorPowerCase
Win 7 Home 64 1366x768 gloss 90w power brick Acer 
  hide details  
Reply
    
CPUGraphicsRAMHard Drive
i5-2410M @ 2.9ghz Nvidia GT 540M 1GB DDR3 4GB DDR3 1333mhz 500GB 5400rpm 
OSMonitorPowerCase
Win 7 Home 64 1366x768 gloss 90w power brick Acer 
  hide details  
Reply
post #9 of 89
I hope you loaded the CAP files that go with the drivers.
     
CPUMotherboardGraphicsRAM
Intel I7 860  Asus P7P55D-E Pro MSI ATI 6990 8gb G.Skill 1600 DDR3 (4x2Gb) 
RAMHard DriveHard DriveOptical Drive
G. Skill 1600 DDR3 OCZ Agility 2 120Gb  Seagate SATA Barracuda 160GB TSH663B DVD burner 
CoolingCoolingCoolingCooling
EK Supreme HF XSPC RC360 XSPC DDC Reservoir EK-FC6990 - EN (Nickel) 
OSMonitorKeyboardPower
Windows 10 64bit Pro Gateway FHX2300 Microsoft Wireless Multimedia V2 PC Power & Cooling Silencer 750 Quad 
CaseMouseAudio
Cooler Master HAF 932 Microsoft Wireless Optical Creative 5.1 
  hide details  
Reply
     
CPUMotherboardGraphicsRAM
Intel I7 860  Asus P7P55D-E Pro MSI ATI 6990 8gb G.Skill 1600 DDR3 (4x2Gb) 
RAMHard DriveHard DriveOptical Drive
G. Skill 1600 DDR3 OCZ Agility 2 120Gb  Seagate SATA Barracuda 160GB TSH663B DVD burner 
CoolingCoolingCoolingCooling
EK Supreme HF XSPC RC360 XSPC DDC Reservoir EK-FC6990 - EN (Nickel) 
OSMonitorKeyboardPower
Windows 10 64bit Pro Gateway FHX2300 Microsoft Wireless Multimedia V2 PC Power & Cooling Silencer 750 Quad 
CaseMouseAudio
Cooler Master HAF 932 Microsoft Wireless Optical Creative 5.1 
  hide details  
Reply
post #10 of 89
Reset you card back to stock and try again, you might have an unstable overclock on one of your cards. Make sure you have the latest patch of Crysis.

Then check other games that have near 100% scalling in games. You will be lower than 100% due to your x4 lane on your mobo, but Crysis may not be the best choice to test crossfire scaling. Try Far Cry 2 or BFBC2, they scale very well when nothing is wrong.
It's A Computer!
(13 items)
 
Also a Computer!
(15 items)
 
 
CPUMotherboardGraphicsRAM
i5 2500K Gigabyte Z68X-UD4 Asus HD 5850 G. Skill Ripjaws 
Hard DriveHard DriveOptical DriveCooling
Crucial M4 WD Caviar Black Samsund SH-S223A Antec Kuhler 920  
OSMonitorPowerCase
Windows 7 Home Samsung 2443BW HAS Silverstone Strider Plus 750W NZXT Source 210 Black 
Mouse
Logitech G500 
CPUMotherboardGraphicsRAM
AMD PII X4 965BE MSI 790FX-GD70 ASUS HD 4850  G.Skill Ripjaws 
Hard DriveHard DriveOptical DriveCooling
Intel X25-V WD Caviar Blue Samsung S222A Thermalright Venomous-X 
OSMonitorPowerCase
Windows 7 64 Home Samsung S23A Corsair TX750W NZXT Source 210 Black 
Mouse
MX 518 
CPUMotherboardGraphicsRAM
Lapped e2180@3.0GHz Gigabyte GA-G41M-ES2L 9500GT Patriot DDR2@800MHz 
Hard DriveOSMonitorPower
Hitachi 500gb Windows 7 Viewsonic 19" Cooler Master 500W 
  hide details  
Reply
It's A Computer!
(13 items)
 
Also a Computer!
(15 items)
 
 
CPUMotherboardGraphicsRAM
i5 2500K Gigabyte Z68X-UD4 Asus HD 5850 G. Skill Ripjaws 
Hard DriveHard DriveOptical DriveCooling
Crucial M4 WD Caviar Black Samsund SH-S223A Antec Kuhler 920  
OSMonitorPowerCase
Windows 7 Home Samsung 2443BW HAS Silverstone Strider Plus 750W NZXT Source 210 Black 
Mouse
Logitech G500 
CPUMotherboardGraphicsRAM
AMD PII X4 965BE MSI 790FX-GD70 ASUS HD 4850  G.Skill Ripjaws 
Hard DriveHard DriveOptical DriveCooling
Intel X25-V WD Caviar Blue Samsung S222A Thermalright Venomous-X 
OSMonitorPowerCase
Windows 7 64 Home Samsung S23A Corsair TX750W NZXT Source 210 Black 
Mouse
MX 518 
CPUMotherboardGraphicsRAM
Lapped e2180@3.0GHz Gigabyte GA-G41M-ES2L 9500GT Patriot DDR2@800MHz 
Hard DriveOSMonitorPower
Hitachi 500gb Windows 7 Viewsonic 19" Cooler Master 500W 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD/ATI
Overclock.net › Forums › Graphics Cards › AMD/ATI › 0% CF scaling