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CPU, PCIe, & Northbridge Questions

post #1 of 2
Thread Starter 
I am working on a new build (see here: http://www.overclock.net/t/1590583/design-a-new-primary-system). I didn't want to cloud the questions on which components I should get, so I'm starting this thread to get more focused answers to improve my understanding.

I've been more or less out of the game for several years, and how PCIe data is handled has changed. CPUs now have direct lanes to the PCIe devices, so I need to understand how that all works.

So, my questions are as follows:
* Which of the PCIe lanes that the CPU has built-in (e.g. 40 for the 5930K) correlate to the primary and secondary PCIe lanes that Wikipedia outlines for the X99 chipset (see here: https://en.wikipedia.org/wiki/LGA_2011)?
* Do both the primary and secondary lanes all go directly to the CPU, or does the secondary go through the northbridge?
* Does USB and SATA go through the secondary lanes indicated on that Wikipedia link? If not, what are the secondary lanes for?
BladeRunner v3.0
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CPUMotherboardGraphicsRAM
Intel Core i7-5930K @ 4.6GHz Core, 4.4GHz Cache ASUS X99 Sabertooth Sapphire R9 380 Dual-X OC G.Skill TridentZ 32GB DDR4 @ 13-15-13-33-1T 320... 
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Samsung 850 Pro 512GB Noctua NH-D15S Windows 10 Home 64-bit Logitech G910 Orion Spark 
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EVGA SuperNova 1000W T2 NZXT Phantom 820 Black Logitech G5 
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BladeRunner v3.0
(11 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-5930K @ 4.6GHz Core, 4.4GHz Cache ASUS X99 Sabertooth Sapphire R9 380 Dual-X OC G.Skill TridentZ 32GB DDR4 @ 13-15-13-33-1T 320... 
Hard DriveCoolingOSKeyboard
Samsung 850 Pro 512GB Noctua NH-D15S Windows 10 Home 64-bit Logitech G910 Orion Spark 
PowerCaseMouse
EVGA SuperNova 1000W T2 NZXT Phantom 820 Black Logitech G5 
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post #2 of 2
Thread Starter 
I would also like to know if the advertised "M.2" slots on motherboards are anything other than PCIe x4 slots. From what I've read the M.2 devices use the PCIe bus, but is it actually a separate connection or would those be usable by other devices that need a PCIe x4 connection?
BladeRunner v3.0
(11 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-5930K @ 4.6GHz Core, 4.4GHz Cache ASUS X99 Sabertooth Sapphire R9 380 Dual-X OC G.Skill TridentZ 32GB DDR4 @ 13-15-13-33-1T 320... 
Hard DriveCoolingOSKeyboard
Samsung 850 Pro 512GB Noctua NH-D15S Windows 10 Home 64-bit Logitech G910 Orion Spark 
PowerCaseMouse
EVGA SuperNova 1000W T2 NZXT Phantom 820 Black Logitech G5 
  hide details  
Reply
BladeRunner v3.0
(11 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-5930K @ 4.6GHz Core, 4.4GHz Cache ASUS X99 Sabertooth Sapphire R9 380 Dual-X OC G.Skill TridentZ 32GB DDR4 @ 13-15-13-33-1T 320... 
Hard DriveCoolingOSKeyboard
Samsung 850 Pro 512GB Noctua NH-D15S Windows 10 Home 64-bit Logitech G910 Orion Spark 
PowerCaseMouse
EVGA SuperNova 1000W T2 NZXT Phantom 820 Black Logitech G5 
  hide details  
Reply
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