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10-21-2018 12:50 PM #1
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Question about lane sharing on a Z390 Maximus XI Hero
EDITED:
Hi,
I'm looking at a build with an i9 9900K and a Z390 Maximus XI Hero, but I have a question about lane sharing off of the processor and the motherboards chipset
To simplify, here is what I'm intending to do in terms of devices and populating slots:
1 GPU in top PCIEX16_1 slot - GTX 1080
All 6 SATA connections populated (mixed HDD's and SSDs)
Both M.2_1 and M.2_2 populated with PCIe based 2280 NVMe's 970 Evo's in PCIe mode (no raid)
1 PCI USB 3.0 - four port card.
The PCI USB card is here
https://www.amazon.ca/gp/product/B00...6LDAB3U0&psc=1
Which PCIEX1 slot should I use for the PCI USB card ... 1, 2 or 3? and will that share lanes with anything?
Thank you in advance.Last edited by jackflynn; 10-21-2018 at 02:48 PM.
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10-21-2018 04:00 PM #2
Nate152 PC Specs Motherboard ROG Maximus IX Code Processor i7-7700k 5.2GHz Delidded Memory (part number) 16GB G.Skill Trident Z 4025MHz 17-17-17-39-2T Graphics Card #1 Titan Xp - EKFC waterblock Graphics Card #2 Titan Xp Sound Card ROG SupremeFX 2015 Monitor HP ZR30w Storage #1 Toshiba OCZ VX500 256GB CPU Cooler Swiftech Apogee GTZ Case Thermaltake Armor+ VH6000 Power Supply EVGA Supernova 1600w Titanium Keyboard Cyberpower Skorpion K2 Mouse Razer Basilisk Headset Sennheiser HD6XX / Modmic 5 OS Windows 10 Home 64 bit Accessory #1 Asus optical drive Accessory #2 Koolance ERM-2K3U
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10-21-2018 04:24 PM #3
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[QUOTE=Nate152;739829]Hi jackflynn
Can you get away with just using the motherboard and case usb ports ?
Thanks for replying,
Your response I see here in the forum doesn't seem to be the same as your response I see when it arrives as an email.
I ended up calling Asus. Unfortunately I had to wait 40 minutes in a queue , then got to talk for a few minutes. Then they put me on hold ... another 35 minutes after that I was still on hold so I gave up.
What I was able to clear up is that using both M.2 slots in NVMe mode will not share bandwidth - at least that's what Asus CS told me.
Your email response said "using the M.2_! slot disables the sata 6 port." So my understanding from the conversation with Asus is that this is only if you are using M.2_1 in SATA mode. When both are in PCIe mode there is no sharing. Are you saying this isn't true?
But the larger question is still about the PCI USB card. In the image here, everything in red I've populated. Now the question is which one of the three PCIEX1 slots (in green) could I use that wouldn't share lanes with everything else that's already populated?
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10-21-2018 06:28 PM #4
Nate152 PC Specs Motherboard ROG Maximus IX Code Processor i7-7700k 5.2GHz Delidded Memory (part number) 16GB G.Skill Trident Z 4025MHz 17-17-17-39-2T Graphics Card #1 Titan Xp - EKFC waterblock Graphics Card #2 Titan Xp Sound Card ROG SupremeFX 2015 Monitor HP ZR30w Storage #1 Toshiba OCZ VX500 256GB CPU Cooler Swiftech Apogee GTZ Case Thermaltake Armor+ VH6000 Power Supply EVGA Supernova 1600w Titanium Keyboard Cyberpower Skorpion K2 Mouse Razer Basilisk Headset Sennheiser HD6XX / Modmic 5 OS Windows 10 Home 64 bit Accessory #1 Asus optical drive Accessory #2 Koolance ERM-2K3U
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Well, if the Maximus XI Hero is like the Maximus X it has 16 pcie lanes from the cpu and 8 from the chipset for a total of 24 pcie lanes. With two M.2 SSD's at x4 you already used the 8 chipset lanes so, I would think adding a pcie x1 card would either drop the gpu to x8 or run one of the M.2 SSD's at x2.
Was why I was wondering if you could get away with not using it, the Maximus XI Hero has eight usb ports.
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10-21-2018 06:54 PM #5
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I have a lot of USB devices. Several are USB 3 HDD's which I could potentially shuck and create a larger JBOD box. There are possibilities. But I'd still like to sort this out.
Here is the Z390 chipset block diagram if that helps:
Maybe I'm misunderstanding this. When I see 16 PCIe lanes off of the processor, and then below "Up to 24 PCI Express 3.0" on the Intel Z390 Chipset, then I'm thinking those 24 are 'in addition to' the ones up top (so total 40). Otherwise how would you accommodate 6 SATA, plus USB, plus M.2, plus audio, etc - doesn't that all come out of the "24 PCI Express 3.0" on the chipset, independent of the 16 up top which are reserved for the two PCIe16x slots (1 @ 16x or 2 @ 8x 8x)?
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10-21-2018 07:41 PM #6
Nate152 PC Specs Motherboard ROG Maximus IX Code Processor i7-7700k 5.2GHz Delidded Memory (part number) 16GB G.Skill Trident Z 4025MHz 17-17-17-39-2T Graphics Card #1 Titan Xp - EKFC waterblock Graphics Card #2 Titan Xp Sound Card ROG SupremeFX 2015 Monitor HP ZR30w Storage #1 Toshiba OCZ VX500 256GB CPU Cooler Swiftech Apogee GTZ Case Thermaltake Armor+ VH6000 Power Supply EVGA Supernova 1600w Titanium Keyboard Cyberpower Skorpion K2 Mouse Razer Basilisk Headset Sennheiser HD6XX / Modmic 5 OS Windows 10 Home 64 bit Accessory #1 Asus optical drive Accessory #2 Koolance ERM-2K3U
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I'd ditch the external drives.
I'm not sure which M.2 SSD's you're looking at but the Samsung 970 Evo 1TB is a good deal, would you need more than two of these ?
https://www.amazon.com/Samsung-970-E...s=970+evo+1+tb
Up to 24 pcie lanes means 16 from the cpu and 8 from the chipset, if you want more lanes you'll have to jump up to x299.
You still need that usb pcie card ?Last edited by Nate152; 10-21-2018 at 07:46 PM.
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10-22-2018 08:57 AM #7
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10-22-2018 02:12 PM #8
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10-22-2018 04:56 PM #9
Nate152 PC Specs Motherboard ROG Maximus IX Code Processor i7-7700k 5.2GHz Delidded Memory (part number) 16GB G.Skill Trident Z 4025MHz 17-17-17-39-2T Graphics Card #1 Titan Xp - EKFC waterblock Graphics Card #2 Titan Xp Sound Card ROG SupremeFX 2015 Monitor HP ZR30w Storage #1 Toshiba OCZ VX500 256GB CPU Cooler Swiftech Apogee GTZ Case Thermaltake Armor+ VH6000 Power Supply EVGA Supernova 1600w Titanium Keyboard Cyberpower Skorpion K2 Mouse Razer Basilisk Headset Sennheiser HD6XX / Modmic 5 OS Windows 10 Home 64 bit Accessory #1 Asus optical drive Accessory #2 Koolance ERM-2K3U
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Thank you
After your pictures z390 apparently has 24 pcie chipset lanes, you should have no trouble using two M.2 SSD's and the pcie usb card.