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x4 x8 instead of x8 x8 pci e

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I've been running SLI GTX 760's for a few weeks now. I'm only able to get x4 x8 speeds for the cards. I cannot seem to get x8 x8 that I should be. They are running flawless and the benchmarks/games are off the charts. I really don't want to mess with updating bios I have my rig running perfect and to much to lose if the update fubars my board. Any other suggestions??
 
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There should be an option to set the pcie speeds in the bios.
 
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Storage 2x2tb and 4x1tb seagate and 1x2 tb external hard drives
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I tried setting it to PCI E 3 but when i reboot it don't take.
 
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Still only running 4x 8x in 2.0 pci e instead of 3.0 as it was before
 
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Sorry it didn't help. :( Are you getting the typical scores for a 8x 8x and is it possible its displaying the wrong speed?

Only other idea I have is see if theres a legacy pcie mode set to auto.

edit: are you using the top two pcie full length slots not the bottom one?
 
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My scores are fantastic so I know I"m not losing any performance. 3Dmark 2011 is 15,146 and 3dmark Firestrike is 10,069. I was just trying to get it to do x8 x8. If I set it to auto it defaults to x4 and x8 3.0
 
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Sometimes its card seating issue, meaning not plugged into PCI-E slot properly, I had similar issue before.
 
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I was going to suggest that you might be using the wrong set of PCIE slots, but that board (ASRock Z77 Extreme4) only has two PCIE x16 slots and the 16 lanes should evenly split between them if both slots are populated. I'd either guess the program you're using is reporting the lane counts wrong, or there's a BIOS updates that needs doing.
 
Joined
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Location
Canton, Ohio
System Name Bob's PC
Processor i7 3770k
Motherboard ASROCK Extreme 4
Cooling Coolermaster 212 Evo 120mm
Memory 8 gig Crucial DDR3 1600
Video Card(s) EVGA GTX 780 SC ACX 3 gig
Storage 2x2tb and 4x1tb seagate and 1x2 tb external hard drives
Display(s) 50" LG
Case Coolermaster HAF 912
Audio Device(s) HD onboard
Power Supply Corsair HX 850
There is a bios update but I'm not going to risk running it and having things get borked. Thanks for the help all the same.
 

cadaveca

My name is Dave
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SLi doesn't work with x4/x8.

So, chances are, what you are seeing is idle?
 
Joined
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Location
Canton, Ohio
System Name Bob's PC
Processor i7 3770k
Motherboard ASROCK Extreme 4
Cooling Coolermaster 212 Evo 120mm
Memory 8 gig Crucial DDR3 1600
Video Card(s) EVGA GTX 780 SC ACX 3 gig
Storage 2x2tb and 4x1tb seagate and 1x2 tb external hard drives
Display(s) 50" LG
Case Coolermaster HAF 912
Audio Device(s) HD onboard
Power Supply Corsair HX 850
I fired up Unigine Tropics full 1080p maxed out settings in window mode both GPU's over 95% usage and GPU Z still shows 1 card running x4 3.0 and other x8 3.0
 
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