Question Multiple NVMe's on 1 m.2-PCIe Adapter; Bifurcation & MSI Z270-A Pro

Jul 31, 2020
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My motherboard (MSI Z270-A Pro) only has ONE m.2 slot which is being occupied by NVMe #1. I have a second NVMe on a PCIEx4 Gen3 adapter, which is slotted into the second x16 spot (the graphics card being in the first x16 slot).

So, I'm needing to get NVMe #3; however, I don't have any more slots that are PCIEx4's. I did some research and there are a few PCIEx4 Gen3 adapters that fit two or more NVMe (both m-key) drives on one adapter, which is fitted for x8/x16 slot. So I would have two NVMe's on one adapter using two PCIEx4 lanes.

My QUESTION #1 is does my motherboard, which is fairly new in tech, support multiple NVMe's on one adapter, which I believe is referred to as bifurcation? This is the adapter in question, which is one of the few that I've found that supports two more NVMe m-key drives on one adapter simultaneously, where each drive would have a x4 lane is the following
https://www.amazon.com/dp/B07NQBQB6Z/?coliid=I22Z3LJF9274VP&colid=HVB7Q9TL3IOW&psc=1&ref_=lv_ov_lig_dp_it

There is another adapter, where in the event that a motherboard doesn't support bifurcation, you can get an adapter that has a certain switch. But the cost of this is $140+
https://www.amazon.com/dp/B07PRN2QCV/ref=sspa_dk_detail_4?psc=1&pd_rd_i=B07PRN2QCV&pd_rd_w=wkuVZ&pf_rd_p=48d372c1-f7e1-4b8b-9d02-4bd86f5158c5&pd_rd_wg=j4em7&pf_rd_r=9PWCN06M08MHDZ0PDJZY&pd_rd_r=4de19be7-675c-44fe-baa3-e14dbc723280&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEySFRQOFZJRUpOWTVFJmVuY3J5cHRlZElkPUEwNjExNjI4MzNGOUxRS05ZRTJXMCZlbmNyeXB0ZWRBZElkPUEwMDY2MzQ5WUMxWk1ZNEIwSlE2JndpZGdldE5hbWU9c3BfZGV0YWlsJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ==

My QUESTION #2

Does having three NVMe drives (one in the mobo's m.2 slot, two on the PCIE adapter) take any lane bandwidth from the GPU or do any of those devices run in reduced performance due to unavailable bandwidth? I don't think it does, but I'm not 100%. I believe my i7-7700K has 24 lanes, where 16 is conjunction with the GPU (PCIE x16) which leaves me with 8 lanes for NVMe#2 and NVMe#3. I don't have anything else in the PCIe slots, and the lanes for NVMe#1 is being provided by the motherboard chipset.

I FULLY APPRECIATE ANY COMMENTS/ASSISTANCE THAT YALL COULD PROVIDE

.. and apologies that it's so wordy but just tried to explain the situation completely.
 

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