enkrypt3d
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Attached screenshot of my BIOS. I have 2 x 1080's and an Intel 750 and that's all I have plugged into this motherboard. If I move the Intel 750 to PE2 or 3, it causes the Intel 750 to run at 1x speeds... why? I have no idea. The larger issue is that if you add up all these lanes, I can never get more than 28 lanes. When I had a wifi card plugged in as well, it would steal lanes from other devices to make it work. And yes I'm on the latest BIOS and changing the Gen# on the PCI-E configuration does nothing. What is going on here? Max file upload size is 500KKB? The image captured from the bios is 800Kb...... ugh
post edited by enkrypt3d - 2016/08/18 11:01:20
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the_Scarlet_one
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/18 11:00:35
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Which motherboard? Can you provide a screen shot of your bios, and a screen shot of the "Processors" tab in Device Manager.
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enkrypt3d
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/18 11:02:50
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x99 Classified motherboard. Trying to resize the bios screenshot... 
post edited by enkrypt3d - 2016/08/18 11:06:11
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enkrypt3d
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/18 11:05:00
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bcavnaugh
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/18 11:45:12
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Make sure that # 7. PCI-E Disable Dipswitches are all on. Page 8 and 9 in Part 1Review Page 9 in Part 1 PCI-E Lane Distribution (40 Lane Processor) PE1 – x16 (x8 if PE2 is used) PE2 – x8 PE3 – x8 PE4 – x16 (x8 if PE3 is used) PE5 – x4 (Gen 2 only, 4 lanes pulled from PCH) PE6 – x8 PCI-E Lane Distribution (40 Lane Processor) PE1 – x16 (x8 if PE2 is used) Use GPU PE2 – x8 Do Not Use PE3 – x8 Do Not Use PE4 – x16 (x8 if PE3 is used) Use GPU PE5 – x4 (Gen 2 only, 4 lanes pulled from PCH) PE6 – x8 USE for your SSD Drive
post edited by bcavnaugh - 2016/08/18 11:50:28
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Cool GTX
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/18 12:02:08
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bcavnaugh
PCI-E Lane Distribution (40 Lane Processor) PE1 – x16 (x8 if PE2 is used) Use GPU PE2 – x8 Do Not Use PE3 – x8 Do Not Use PE4 – x16 (x8 if PE3 is used) Use GPU PE5 – x4 (Gen 2 only, 4 lanes pulled from PCH) PE6 – x8 USE for your SSD Drive
+1  I use PCIe 1 & 4 for GPUs & 6 for Intel 750 SSD - works fine Are you using a M.2 drive also ?
post edited by Cool GTX - 2016/08/18 12:04:53
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enkrypt3d
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/18 12:03:37
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Cool GTX
I use PCIe 1 & 4 for GPU & 6 for Intel 750 SSD
Are you using a M.2 drive also ?
No I'm not using an m.2 drive at the moment although I did order a samsung 950 512GB to replace the Intel 750 to see if that helps. Since the m.2 slot would steal lanes from the PCH it should "free up" lanes for the 2 GPU's right? How are your PCI-E lanes divided up? Can you post a screenshot of your BIOS? Thx
post edited by enkrypt3d - 2016/08/18 12:07:30
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enkrypt3d
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/18 12:06:46
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bcavnaugh
Make sure that #7. PCI-E Disable Dipswitches are all on. Page 8 and 9 in Part 1
Review Page 9 in Part 1
PCI-E Lane Distribution (40 Lane Processor) PE1 – x16 (x8 if PE2 is used) PE2 – x8 PE3 – x8 PE4 – x16 (x8 if PE3 is used) PE5 – x4 (Gen 2 only, 4 lanes pulled from PCH) PE6 – x8
PCI-E Lane Distribution (40 Lane Processor) PE1 – x16 (x8 if PE2 is used) Use GPU PE2 – x8 Do Not Use PE3 – x8 Do Not Use PE4 – x16 (x8 if PE3 is used) Use GPU PE5 – x4 (Gen 2 only, 4 lanes pulled from PCH) PE6 – x8 USE for your SSD Drive
Yep that's exactly how I have it setup..... but why is my 2nd GPU running at 8x if I have plenty of lanes?
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bcavnaugh
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/18 12:10:36
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enkrypt3d
Reset your Settings to Auto Turn off the Computer AND PULL the Power Cord and want until you see the lights go off on the MB. Power Back up and report the settings or take another Snap Shot.
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Cool GTX
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/18 12:20:20
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Or just load default BIOS settings (after some photos with your phone)
Save, reboot
Enter BIOS - setup your edits & save - reboot
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enkrypt3d
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/18 12:20:32
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bcavnaugh
enkrypt3d
Reset your Settings to Auto Turn off the Computer AND PULL the Power Cord and want until you see the lights go off on the MB.
Power Back up and report the settings or take another Snap Shot.
Same result. Can anyone show me this board using more than 28 lanes in their BIOS?
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Cool GTX
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/18 12:24:25
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Load default BIOS - save - reboot (clears the cobwebs) (take photo of settings first) Next - reenter BIOS - edit your changes My X99 Classy 5960X is currently down for GPU & loop upgrade 
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bcavnaugh
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/18 12:31:56
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Cool GTX
Load default BIOS - save - reboot (clears the cobwebs) (take photo of settings first)
Next - reenter BIOS - edit your changes
My X99 Classy 5960X is currently down for GPU & loop upgrade
+1 that little Red Button works wonders. Mine has 4 GTX 980's and are working fine, your statement that you are only running 28 lanes is not really true though as all your PCIe Slots are active. Turn off the PCIe Slots that are not used. # 7. PCI-E Disable Dipswitches are all on. Page 8 and 9 in Part 1
post edited by bcavnaugh - 2016/08/18 12:34:40
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bcavnaugh
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/18 12:37:52
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Turn off if you are not using M2 Sockets 1 and 3. 
post edited by bcavnaugh - 2016/08/18 12:40:01
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Cool GTX
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/18 12:43:52
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bcavnaugh
Turn off if you are not using M2 Sockets 1 and 3.
+1 Are they off by default ?
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enkrypt3d
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/18 12:44:38
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My m.2 slots are disabled at the moment. Do any of you have both GPU's running at 16x? I Know this doesn't present a problem but I've never seen more than 28 lanes used.. thanks
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ragevirusqq
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/18 12:50:01
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Mine uses more than 28 no problem. I cant screenshot for you till later tonight when i get home tho
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bcavnaugh
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/18 12:52:10
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Cool GTX
bcavnaugh
Turn off if you are not using M2 Sockets 1 and 3.
+1
Are they off by default ?
NO! they are not. Also if I only have 2 GTX 980 Cards they do both run at X16 Gen3
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Sajin
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/18 13:03:09
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bcavnaugh
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/18 13:17:13
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Sajin
Does your cpu pass the intel processor diagnostic tool?
Note: Run motherboard bios at default settings when running the diagnostic tool.
You can also test by putting the GPU in PE3 – x8 (Slot is *NOT* functional with a 28 lane processor.)
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bdary
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/18 15:27:33
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I used to run two 970's in slots 1 & 4 at x16 each and a 780Ti in slot 6 at x8. All functioned as they should. Using all 40 lanes.
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the_Scarlet_one
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/18 15:41:46
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As someone mentioned above, move the second card to slot 3. Also, try swapping both gpu's to see if the lane issue follows the gpu itself. Hopefully it isn't the gpu, but it'll you move the bottom card to the top, and it follows, that may be an indication that something with the gpu is causing it to run at x8.
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enkrypt3d
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/18 16:34:53
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I've had both my 980 Ti's in every slot imaginable and never been able to get 16x/16x on both cards.....
The CPU diagnostics passed with flying colors. Max temp 71C under full load.
Once I get my Samsung 950 to replace the Intel 750, will this change the PCIE lane distribution? This is not a new issue. I had a ticket open with EVGA about this but they gave up after we tried every possible thing in this thread and others with no results.
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Sajin
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/18 16:37:55
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Do both cards run at x16 when tested individually in the first pci-e slot while the other is completely removed from the system?
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enkrypt3d
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/18 16:38:37
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ypsylon
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/18 23:48:28
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If I may add couple lines to the problem. It seems that EVGA X99 Classified has some issues with properly displaying lane negotiation in the BIOS. When I first put system together I was using GTX580 and one 750. No matter what slot I've plugged it in always reported as Gen.1 x16 while it's Gen.2 card. I tried 7950 (Gen.3 card) I have and it reported as Gen.1 x8 with 5930 inside. It's not a major issue. From what I managed to spy on the problem there is no performance hit. In any measurable way I did not discovered any performance issues because of messed up reporting in the UEFI. Problem solved itself when I bought 970. Perhaps it's something in the motherboard/chipset firmware. I don't know.
post edited by ypsylon - 2016/08/18 23:53:45
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arestavo
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/19 02:58:56
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OP, have you tried clearing the CMOS yet?
Hold down the little red CMOS reset button by the USB connectors for 10 seconds right after you power up. See if that clears the problem.
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enkrypt3d
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/20 10:07:56
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arestavo
OP, have you tried clearing the CMOS yet?
Hold down the little red CMOS reset button by the USB connectors for 10 seconds right after you power up. See if that clears the problem.
As i've said this is not a new issue. I've been through every possible step. It's the same on 3 different BIOS versions. My OS is now on a Samsung 950 m.2 512GB and the board still shows 16x/8x for the GPU's with nothing else plugged in..... whisky tango foxtrot?
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bcavnaugh
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/20 10:29:30
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Sounds like a Bad CPU, have you Tested the CPU in a Different Motherboard? Our maybe you bents some CPU Socket Pins.
post edited by bcavnaugh - 2016/08/20 10:55:10
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enkrypt3d
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Re: Motherboard limits my CPU to 28 lanes on a 5960X?
2016/08/20 10:37:42
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bcavnaugh
Sound like a Bad CPU, have you Tested the CPU in a Different Motherboard?
Our maybe you bents some CPU Socket Pins.
a bad CPU? lol there are no bent pins the system is stable and overclocked to 4.5Ghz without issue..... if I had bent pins the system wouldn't post. It's incredibly hard to bend pins on the motherboard. I was extremely careful since this CPU cost me $1k!
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