05-14-2018 11:17 AM - last edited on 03-06-2024 07:22 PM by ROGBot
05-14-2018 01:10 PM
05-15-2018 01:48 PM
brkkab123 wrote:
The top m.2 slot that has the heat-sink on it does use PCIe lanes.
If you use it your x16 PCIe slot will only use x8 speeds.
m.2 slot 2 on the bottom doesn't use PCIe.
If you have a single m.2 ssd use the lower m.2 slot for it.
05-15-2018 04:44 PM
schweigert wrote:
wow..... thanks for this info. I was going nuts, figuring out why my card was only at 8x
now i wonder whats the net best config --- m.2 using pcie lanes w/ card at 8x. or m.2 using the bottom mount non pcie but card at 16x?
11-14-2018 07:52 AM
11-25-2018 07:05 PM
TheRoosterneeb wrote:
Hey guys, I know this thread is probably extremely dead, but posting here for anyone else who stumbles upon this;
From the Motherboard manual .pdf on ASUS' website; https://www.asus.com/us/Motherboards/ROG-CROSSHAIR-VII-HERO/HelpDesk_Manual/
From page ix of the specifications summary, it says devices placed in M.2_2 will steal PCIE lanes from PCIE_SLOT_x8/x4_2.
Diagram of the .pdf's silkscreen, with the corresponding slots w/ respective colors.
You shouldn't see reduced performance as long as you're not running SLI/Crossfire on the board, or putting a graphics card in the x8 slot and running a M.2 SATA/NVME at the same time, for any people aspiring to run a dual NVME set-up like I will be. Honestly, this was a good move from ASUS, using the bandwidth second slot that most experienced PC builders wouldn't be using anyway, since it's an x8 lane to begin with. I'd say if you wanna go full cordless, use this lane for another PCIE storage device, or leave it empty, which is what I would so since it's too close to the x16 PCIE for adequate airflow for your GPU.
09-26-2019 10:21 AM
TheRoosterneeb wrote:
Hey guys, I know this thread is probably extremely dead, but posting here for anyone else who stumbles upon this;
From the Motherboard manual .pdf on ASUS' website; https://www.asus.com/us/Motherboards/ROG-CROSSHAIR-VII-HERO/HelpDesk_Manual/
From page ix of the specifications summary, it says devices placed in M.2_2 will steal PCIE lanes from PCIE_SLOT_x8/x4_2.
Diagram of the .pdf's silkscreen, with the corresponding slots w/ respective colors.
You shouldn't see reduced performance as long as you're not running SLI/Crossfire on the board, or putting a graphics card in the x8 slot and running a M.2 SATA/NVME at the same time, for any people aspiring to run a dual NVME set-up like I will be. Honestly, this was a good move from ASUS, using the bandwidth second slot that most experienced PC builders wouldn't be using anyway, since it's an x8 lane to begin with. I'd say if you wanna go full cordless, use this lane for another PCIE storage device, or leave it empty, which is what I would so since it's too close to the x16 PCIE for adequate airflow for your GPU.
07-15-2019 02:36 PM
schweigert wrote:
wow..... thanks for this info. I was going nuts, figuring out why my card was only at 8x
now i wonder whats the net best config --- m.2 using pcie lanes w/ card at 8x. or m.2 using the bottom mount non pcie but card at 16x?
03-28-2019 07:04 AM
brkkab123 wrote:
The top m.2 slot that has the heat-sink on it does use PCIe lanes.
If you use it your x16 PCIe slot will only use x8 speeds.
m.2 slot 2 on the bottom doesn't use PCIe.
If you have a single m.2 ssd use the lower m.2 slot for it.
03-29-2019 06:03 AM
Tex-Rec wrote:
I just noticed today , when walking a little bit trought the BIOS that my EVGA GTX 1080 FTW2 runs at 8x instead of 16 and im using a single m.2 on the bottom slot since i builded this rig. Now i wonder why , as i known this before and thought i run it like it should runn , but it sems something wrong. Bios is on the latest version 2008 and im on the ASUS RGO Crosshair Hero 7.
is there a solution to give the GPU back 16x , btw the GPU is pluged in the First slot ( right below the rams )