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PLX PEX 8747 Mix and Match 3.0 and 2.0

post #1 of 5
Thread Starter 
I asked once in the Sniper 3/M3 forum unanswered but I guess this is not a really popular question.

What I am trying to know is the PLX PEX 8747 chip which split the 16X 3.0 PCIe lanes from my IV chip intelligent enough to handle both PCIe 3.0 cards and 2.0 in the 4 PCIe slots accordingly or it simply handles all PCIe in 2.0 if a 2.0 card is added into the mix?

In other words, I am running CF 7970s and maybe tri later, if I want to add a PhysX card into the mix say a GTX580/480(or any PCIe2.0), will it affect the 7970s running at 3.0?

Thanks in advance!
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Main Rig V 6.8
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Intel Core i7 6850K @ 4.4Ghz Asus Rog Rampage V Extreme U3.1 GTX 1080 Ti @ 2050/6000 Corsair Vengance LPX 16GB DDR4-2800 
Hard DriveHard DriveHard DriveHard Drive
Intel 600P 512GB NVMe Samsung 850 PRO 256GB Samsung 850 EVO 500GB WD Caviar Black 640GB X2 
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Corsair H115i AIO Windows 10 Pro x64 Philips BDM4350UC 4K Monitor 10bit + LG IPS231P Corsair K70 LUX CherryMX Brown 
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Corsair AX1200 80Plus Gold Thermaltake Core P3 Logitech G502 Proteus Core  ALC1150 Optical Out to Pioneer VSX-824-K 
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post #2 of 5


yes it will "handle" it
    
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post #3 of 5
Thread Starter 
Thanks! Although it doesn't show anything regarding PCIe 2.0/3.0, I guess the "flexible packet flow control" should do the magic? I don't worry about X8 or X16 as long as it is 3.0!
Main Rig V 6.8
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 6850K @ 4.4Ghz Asus Rog Rampage V Extreme U3.1 GTX 1080 Ti @ 2050/6000 Corsair Vengance LPX 16GB DDR4-2800 
Hard DriveHard DriveHard DriveHard Drive
Intel 600P 512GB NVMe Samsung 850 PRO 256GB Samsung 850 EVO 500GB WD Caviar Black 640GB X2 
CoolingOSMonitorKeyboard
Corsair H115i AIO Windows 10 Pro x64 Philips BDM4350UC 4K Monitor 10bit + LG IPS231P Corsair K70 LUX CherryMX Brown 
PowerCaseMouseAudio
Corsair AX1200 80Plus Gold Thermaltake Core P3 Logitech G502 Proteus Core  ALC1150 Optical Out to Pioneer VSX-824-K 
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Main Rig V 6.8
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 6850K @ 4.4Ghz Asus Rog Rampage V Extreme U3.1 GTX 1080 Ti @ 2050/6000 Corsair Vengance LPX 16GB DDR4-2800 
Hard DriveHard DriveHard DriveHard Drive
Intel 600P 512GB NVMe Samsung 850 PRO 256GB Samsung 850 EVO 500GB WD Caviar Black 640GB X2 
CoolingOSMonitorKeyboard
Corsair H115i AIO Windows 10 Pro x64 Philips BDM4350UC 4K Monitor 10bit + LG IPS231P Corsair K70 LUX CherryMX Brown 
PowerCaseMouseAudio
Corsair AX1200 80Plus Gold Thermaltake Core P3 Logitech G502 Proteus Core  ALC1150 Optical Out to Pioneer VSX-824-K 
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post #4 of 5
all downgrade to PCI-E 2.0 if one card is 2.0
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X99 Main Rig
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post #5 of 5
Thread Starter 
Quote:
Originally Posted by Sin0822 View Post

all downgrade to PCI-E 2.0 if one card is 2.0

Thank you! Sin, saved my day! thumb.gif Rep+
Main Rig V 6.8
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 6850K @ 4.4Ghz Asus Rog Rampage V Extreme U3.1 GTX 1080 Ti @ 2050/6000 Corsair Vengance LPX 16GB DDR4-2800 
Hard DriveHard DriveHard DriveHard Drive
Intel 600P 512GB NVMe Samsung 850 PRO 256GB Samsung 850 EVO 500GB WD Caviar Black 640GB X2 
CoolingOSMonitorKeyboard
Corsair H115i AIO Windows 10 Pro x64 Philips BDM4350UC 4K Monitor 10bit + LG IPS231P Corsair K70 LUX CherryMX Brown 
PowerCaseMouseAudio
Corsair AX1200 80Plus Gold Thermaltake Core P3 Logitech G502 Proteus Core  ALC1150 Optical Out to Pioneer VSX-824-K 
  hide details  
Reply
Main Rig V 6.8
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 6850K @ 4.4Ghz Asus Rog Rampage V Extreme U3.1 GTX 1080 Ti @ 2050/6000 Corsair Vengance LPX 16GB DDR4-2800 
Hard DriveHard DriveHard DriveHard Drive
Intel 600P 512GB NVMe Samsung 850 PRO 256GB Samsung 850 EVO 500GB WD Caviar Black 640GB X2 
CoolingOSMonitorKeyboard
Corsair H115i AIO Windows 10 Pro x64 Philips BDM4350UC 4K Monitor 10bit + LG IPS231P Corsair K70 LUX CherryMX Brown 
PowerCaseMouseAudio
Corsair AX1200 80Plus Gold Thermaltake Core P3 Logitech G502 Proteus Core  ALC1150 Optical Out to Pioneer VSX-824-K 
  hide details  
Reply
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