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PCIe Lane Count Inquiry

gerneio
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Basically yes to most stuff.

 

Indeed, this motherboard supports SLI (two Gen 3 PCIE 8x slots) + another Gen 2 4x PCIE device. The additional PCI lanes come from the chipset.

According to the manual, with this setup you can add an additional M.2 PCIE SSD.

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Need someone to help verify something for me really quick. On a motherboard like this, it is my understanding that, when paired with a Ryzen CPU, the two PCIe x16 slots (PCIE_2, PCIE_4) will operate in x8/x8 mode and the last PCIe x16 slot (PCIE_6) will operate in x4 mode, if all are used/filled simultaneously, giving me an overall x8/x8/x4 mode. Is my understanding correct?

 

I'm questioning this because I plan to fill two slots with Nvidia Graphics cards in SLI and the last one with a 10GBE NIC. Currently I have a 4790K paired with a Asrock Fatal1ty Z97X Killer that operates in x8/x4/x4 when all x16 slots are used, which means that SLI does not work due to Nvidia SLI requiring (bullet #1) each card to have at least a x8 mode.

 

Can anyone confirm the above lane operation modes for the AMD board? And if it will work in x8/x8/x4, how exactly? From my understanding the Ryzen CPUs have 16 PCIe lanes (I'm interested in the 1600X), so does the remaining come from the chipset? And if that's the case, do you lose some other functionality (ex. M.2 etc).

 

HB

Gerneio

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Basically yes to most stuff.

 

Indeed, this motherboard supports SLI (two Gen 3 PCIE 8x slots) + another Gen 2 4x PCIE device. The additional PCI lanes come from the chipset.

According to the manual, with this setup you can add an additional M.2 PCIE SSD.

"We're all in this together, might as well be friends" Tom, Toonami.

 

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20 minutes ago, gerneio said:

Need someone to help verify something for me really quick. On a motherboard like this, it is my understanding that, when paired with a Ryzen CPU, the two PCIe x16 slots (PCIE_2, PCIE_4) will operate in x8/x8 mode and the last PCIe x16 slot (PCIE_6) will operate in x4 mode, if all are used/filled simultaneously, giving me an overall x8/x8/x4 mode. Is my understanding correct?

 

I'm questioning this because I plan to fill two slots with Nvidia Graphics cards in SLI and the last one with a 10GBE NIC. Currently I have a 4790K paired with a Asrock Fatal1ty Z97X Killer that operates in x8/x4/x4 when all x16 slots are used, which means that SLI does not work due to Nvidia SLI requiring (bullet #1) each card to have at least a x8 mode.

 

Can anyone confirm the above lane operation modes for the AMD board? And if it will work in x8/x8/x4, how exactly? From my understanding the Ryzen CPUs have 16 PCIe lanes (I'm interested in the 1600X), so does the remaining come from the chipset? And if that's the case, do you lose some other functionality (ex. M.2 etc).

 

HB

Ryzen CPUs have 20 free lanes, AMD states 4 of them are reserved for an M.2 slot but I don't know how strict of a requirement that is.

 

In this case it doesn't matter though, given that the bottom slot is "Gen2 x4" that automatically means the lanes for the bottom slot are provided by the chipset, not the CPU. So total 16 CPU lanes are used for PCIe slots (the first two slots, x16 or x8/x8), and the last 4 CPU lanes are used for the M.2 SSD. Then 4 lanes from the chipset are used for the bottom x4 PCIe slot.

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I would get an asus x370 prime pro instead, the vrms on midrange msi boards are awful.

Want to custom loop?  Ask me more if you are curious

 

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3 minutes ago, Damascus said:

I would get an asus x370 prime pro instead, the vrms on midrange msi boards are awful.

Board was just an example ;)

 

Gerneio

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Just now, gerneio said:

Board was just an example ;)

 

Kewl, as stated above you should be fine.

Want to custom loop?  Ask me more if you are curious

 

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On 1/18/2018 at 3:36 PM, Damascus said:

Kewl, as stated above you should be fine.

Boom, there you have it! 1600X plus Asus Prime x370 Pro for $320 out the door at my local micro center. Good deal!

 

Time to figure out the DDR4 situation...

E56C6A8C-1E20-425D-B4C4-C0E6C89CB0FD.jpeg

Gerneio

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1 hour ago, gerneio said:

Time to figure out the DDR4 situation...

I'd probably be willing to sell ya 2x8gb tridentz rgb for 200 + shippng

Want to custom loop?  Ask me more if you are curious

 

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6 minutes ago, Damascus said:

I'd probably be willing to sell ya 2x8gb tridentz rgb for 200 + shippng

I’ll have to follow up with you at a later time for that one. I think I may have something figured out in the mean time. I found this guy selling nearly an entire Ryzen 1600 build, only missing GPU and storage, with 16 GB Corsair Vengeance RAM. The resale value of all the other parts, except the ram, will actually nearly pay for the ram itself. Sooo hopefully that pans out. But if it don’t then I’m gonna try this potentially cheap route first.

Gerneio

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10 minutes ago, gerneio said:

But if it don’t then I’m gonna try this potentially cheap route first.

Wow, that's very cool, lmk if it works

Want to custom loop?  Ask me more if you are curious

 

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1 hour ago, Damascus said:

I'd probably be willing to sell ya 2x8gb tridentz rgb for 200 + shippng

TridentZ RGB?

What are the specs?

Frequency, Timings, and voltage?

 

Intel Z390 Rig ( *NEW* Primary )

Intel X99 Rig (Officially Decommissioned, Dead CPU returned to Intel)

  • i7-8086K @ 5.1 GHz
  • Gigabyte Z390 Aorus Master
  • Sapphire NITRO+ RX 6800 XT S.E + EKwb Quantum Vector Full Cover Waterblock
  • 32GB G.Skill TridentZ DDR4-3000 CL14 @ DDR-3400 custom CL15 timings
  • SanDisk 480 GB SSD + 1TB Samsung 860 EVO +  500GB Samsung 980 + 1TB WD SN750
  • EVGA SuperNOVA 850W P2 + Red/White CableMod Cables
  • Lian-Li O11 Dynamic EVO XL
  • Ekwb Custom loop + 2x EKwb Quantum Surface P360M Radiators
  • Logitech G502 Proteus Spectrum + Corsair K70 (Red LED, anodized black, Cheery MX Browns)

AMD Ryzen Rig

  • AMD R7-5800X
  • Gigabyte B550 Aorus Pro AC
  • 32GB (16GB X 2) Crucial Ballistix RGB DDR4-3600
  • Gigabyte Vision RTX 3060 Ti OC
  • EKwb D-RGB 360mm AIO
  • Intel 660p NVMe 1TB + Crucial MX500 1TB + WD Black 1TB HDD
  • EVGA P2 850W + White CableMod cables
  • Lian-Li LanCool II Mesh - White

Intel Z97 Rig (Decomissioned)

  • Intel i5-4690K @ 4.8 GHz
  • ASUS ROG Maximus VII Hero Z97
  • Sapphire Vapor-X HD 7950 EVGA GTX 1070 SC Black Edition ACX 3.0
  • 20 GB (8GB X 2 + 4GB X 1) Corsair Vengeance DDR3 1600 MHz
  • Corsair A50 air cooler  NZXT X61
  • Crucial MX500 1TB SSD + SanDisk Ultra II 240GB SSD + WD Caviar Black 1TB HDD + Kingston V300 120GB SSD [non-gimped version]
  • Antec New TruePower 550W EVGA G2 650W + White CableMod cables
  • Cooler Master HAF 912 White NZXT S340 Elite w/ white LED stips

AMD 990FX Rig (Decommissioned)

  • FX-8350 @ 4.8 / 4.9 GHz (given up on the 5.0 / 5.1 GHz attempt)
  • ASUS ROG Crosshair V Formula 990FX
  • 12 GB (4 GB X 3) G.Skill RipJawsX DDR3 @ 1866 MHz
  • Sapphire Vapor-X HD 7970 + Sapphire Dual-X HD 7970 in Crossfire  Sapphire NITRO R9-Fury in Crossfire *NONE*
  • Thermaltake Frio w/ Cooler Master JetFlo's in push-pull
  • Samsung 850 EVO 500GB SSD + Kingston V300 120GB SSD + WD Caviar Black 1TB HDD
  • Corsair TX850 (ver.1)
  • Cooler Master HAF 932

 

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13 hours ago, -rascal- said:

TridentZ RGB?

What are the specs?

Frequency, Timings, and voltage?

 

3000mhz

 

Want to custom loop?  Ask me more if you are curious

 

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