Need help with Nvme installing on B550 Aorus Master!

[lamlam]

Hi Fellow Tech tips, please excuse my poor English!

I have the B550 Aorus Master running 3900x with a Rtx2070 gaming Z, i currently have 2 nvme installed out of 3 slots available for this board. Both are Gen3.

Now i want to get a new Gen 4 nvme to install in the first slot for system and the other 2 as storage. But it only hit me now that if all 3 slots are occupied then the pcie lane of the graphic got slice in half running at 8x.

So should i just go ahead use all 3 available nvme slot and run that RTX2070 at 8x OR get an AIC adapter to run the 2 gen3 nvme i have of the chipset and save all the bandwidth for the new Gen4 nvme and Graphic card ( note i will get the 3080 or something newer in the future to take advantage of the gen4 pcie )

Would the 8x affect much of my RTX2070 or future graphic cards?

Thanks alot guys

[Hairless Monkey Boy]

6 minutes ago, lamlam said:

ut it only hit me now that if all 3 slot is occupied then the pcie lane of the graphic got slice in half running at 8x.

Exactly why I do not like that board. But, with 2 NVME drives installed, you are already running your GPU in 8x mode.

Quote

* The PCIEX16 slot shares bandwidth with the M2B_CPU and M2C_CPU connectors. The PCIEX16 slot operates at up to x8 mode when a device is installed in the M2B_CPU or M2C_CPU connector.

That is an inclusive "or".

 

The two other PCIe slots run at PCIe 3.0 X4, so that's good news at least. It means you could run 1X 4.0 NVME and 2X 3.0 NVMEs at full speed without splitting the GPU lanes up if you use two PCIe to M.2 adapters in PCIEX4_1 and PCIEX4_2 slots.

[lamlam]

Thank you for the quick answer. Lol so i already running my GFcard at 8x with just 2 nvme. that is why my benchmark is off comparing to my friend who has the exact cpu and graphic card but not using this board!

I have to check the benchmark again to see if the 2070 running at 16x vs 8x is off by how much to decide now

Thanks alot man.