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Quick, simple question about PCI-E lanes.

TheSLSAMG
By TheSLSAMG
in CPUs, Motherboards, and Memory
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Go to solution Solved by 79wjd,

It will work (assuming you put the wifi card in one of the slots wired to the PCH).

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So, I will soon have an SLI setup in my system along with a 1x PCI-E wireless card. The question is, will both GPUs still run at PCI-E 3.0 x8 since the PCH has it's own PCI-E lanes, or will I have to do something special with it for it to work?

Main Rig: CPU: AMD Ryzen 7 5700X3D | RAM: 32GB (2x16GB) KLEVV CRAS XR RGB DDR4-3600 | Motherboard: Gigabyte B550I AORUS PRO AX | Storage: 500GB Crucial P3 Plus, 4TB Silicon Power UD90 | GPU: AsRock Radeon RX 9070 XT Steel Legend | Cooling: ThermalTake Floe 280mm w/ be quiet! Pure Wings 3 | Case: Sliger SM580 (Black) | PSU: Corsair SF850

Main Server: CPU: AMD Ryzen 9 5950X | RAM: 64GB (2x32GB) Corsair Vengeance LPX DDR4-3200 | Motherboard: ASUS Crosshair VII Hero WiFi | Storage: 512GB SKHynix NVMe | GPUs: NVIDIA TITAN Xp 2-way SLI | Cooling: Thermalright Frozen Prism 360mm | Case: Corsair 5000D Airflow (White) | PSU: Seasonic Focus GM850

File and Media Server (AOOSTAR WTR Pro): CPU: AMD Ryzen 7 5825U | RAM: 32GB (2x16GB) Silicon Power DDR4-3200 SODIMMs | Storage: 1TB Samsung 970 EVO Plus, 2x14TB Western Digital Ultrastar DC HC530

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It will work (assuming you put the wifi card in one of the slots wired to the PCH).

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It will work (assuming you put the wifi card in one of the slots wired to the PCH).

How would I tell which slots are wired up to the PCH and which ones are not? The board is a GA-Z97X-Gaming 7 for reference.

Main Rig: CPU: AMD Ryzen 7 5700X3D | RAM: 32GB (2x16GB) KLEVV CRAS XR RGB DDR4-3600 | Motherboard: Gigabyte B550I AORUS PRO AX | Storage: 500GB Crucial P3 Plus, 4TB Silicon Power UD90 | GPU: AsRock Radeon RX 9070 XT Steel Legend | Cooling: ThermalTake Floe 280mm w/ be quiet! Pure Wings 3 | Case: Sliger SM580 (Black) | PSU: Corsair SF850

Main Server: CPU: AMD Ryzen 9 5950X | RAM: 64GB (2x32GB) Corsair Vengeance LPX DDR4-3200 | Motherboard: ASUS Crosshair VII Hero WiFi | Storage: 512GB SKHynix NVMe | GPUs: NVIDIA TITAN Xp 2-way SLI | Cooling: Thermalright Frozen Prism 360mm | Case: Corsair 5000D Airflow (White) | PSU: Seasonic Focus GM850

File and Media Server (AOOSTAR WTR Pro): CPU: AMD Ryzen 7 5825U | RAM: 32GB (2x16GB) Silicon Power DDR4-3200 SODIMMs | Storage: 1TB Samsung 970 EVO Plus, 2x14TB Western Digital Ultrastar DC HC530

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How would I tell which slots are wired up to the PCH and which ones are not? The board is a GA-Z97X-Gaming 7 for reference.

x1 slots are wired through the PCH, full length slots are wired to the CPU in most cases.

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x1 slots are wired through the PCH, full length slots are wired to the CPU in most cases.

Alrighty, thanks. I can't wait to build this thing :D

Main Rig: CPU: AMD Ryzen 7 5700X3D | RAM: 32GB (2x16GB) KLEVV CRAS XR RGB DDR4-3600 | Motherboard: Gigabyte B550I AORUS PRO AX | Storage: 500GB Crucial P3 Plus, 4TB Silicon Power UD90 | GPU: AsRock Radeon RX 9070 XT Steel Legend | Cooling: ThermalTake Floe 280mm w/ be quiet! Pure Wings 3 | Case: Sliger SM580 (Black) | PSU: Corsair SF850

Main Server: CPU: AMD Ryzen 9 5950X | RAM: 64GB (2x32GB) Corsair Vengeance LPX DDR4-3200 | Motherboard: ASUS Crosshair VII Hero WiFi | Storage: 512GB SKHynix NVMe | GPUs: NVIDIA TITAN Xp 2-way SLI | Cooling: Thermalright Frozen Prism 360mm | Case: Corsair 5000D Airflow (White) | PSU: Seasonic Focus GM850

File and Media Server (AOOSTAR WTR Pro): CPU: AMD Ryzen 7 5825U | RAM: 32GB (2x16GB) Silicon Power DDR4-3200 SODIMMs | Storage: 1TB Samsung 970 EVO Plus, 2x14TB Western Digital Ultrastar DC HC530

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Alrighty, thanks. I can't wait to build this thing :D

Just double check with the manual since sometimes motherboards are wired strangely. (I tried, but the manual is taking forever to load): http://download.gigabyte.us/FileList/Manual/mb_manual_ga-z97x-gaming7_e.pdf

 

Edit: 

  • Expansion Slots 1 x PCI Express x16 slot, running at x16 (PCIEX16) *
    • For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot.
  • 1 x PCI Express x16 slot, running at x8 (PCIEX8) *
    • The PCIEX8 slot shares bandwidth with the PCIEX16 slot. When the PCIEX8 slot is populated, the PCIEX16 slot will operate at up to x8 mode.
  • 1 x PCI Express x16 slot, running at x4 (PCIEX4) *
    • The PCIEX4 slot shares bandwidth with the PCIEX8 and PCIEX16 slots. When the PCIEX4 slot is populated, the PCIEX16 slot will operate at up to x8 mode and the PCIEX8 will operate at up to x4 mode. *
    • When installing a x8 or above card in the PCIEX4 slot, make sure to set PCIE Slot Configuration (CPU) in BIOS Setup to x4. (Refer to Chapter 2, "BIOS Setup," "Peripherals," for more information.)
  • (The PCIEX16, PCIEX8 and PCIEX4 slots conform to PCI Express 3.0 standard.) 3 x PCI Express x1 slots (The PCI Express x1 slots conform to PCI Express 2.0 standard.)
  • 1 x PCI slot

PSU Tier List | CoC

Gaming Build | FreeNAS Server

Spoiler

i5-4690k || Seidon 240m || GTX780 ACX || MSI Z97s SLI Plus || 8GB 2400mhz || 250GB 840 Evo || 1TB WD Blue || H440 (Black/Blue) || Windows 10 Pro || Dell P2414H & BenQ XL2411Z || Ducky Shine Mini || Logitech G502 Proteus Core

Spoiler

FreeNAS 9.3 - Stable || Xeon E3 1230v2 || Supermicro X9SCM-F || 32GB Crucial ECC DDR3 || 3x4TB WD Red (JBOD) || SYBA SI-PEX40064 sata controller || Corsair CX500m || NZXT Source 210.

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I just stick mine in the top x1 slot assuming your motherboard has one, also keeps it away from the bottom of the GPU and just looks better IMO

BcYHVFl.jpg

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