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ROG X670E E-Gaming Motherbord

F1Aussie
Level 11

‎10-11-2022 04:46 PM

Hi all, I really like the look and features of the E-Gaming mobo and am wondering if it will run two Gen5 M.2 ssd without impacting any other pcie lanes. I believe that it is the case when using the M.2_3 slot it will reduce the PCie x16_1 slot down to x8 as it is mentioned in the manual, I have read that as that is linked to the pcie x16_1 slot but there are two other gen5 M.2 slots that are not linked to that pcie x16_1 slot it is those two that I am curious to know if both can be used at the same time like with one as a C drive and the other as a D drive without eating into any of the pcie lanes from the cpu. Those slots are M.2_1 and M.2_2. They are not mentioned in the manual as being linked to anything.
Cheers
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6 REPLIES 6

STARRAIN_ROG
Customer Service Agent

‎10-11-2022 07:16 PM

Hi F1Aussie,
As you mentioned only M.2_3 slot will reduce the PCie x16_1 slot down to x8 in the ROG STRIX X670E-E GAMING WIFI manual, M.2_1 and M.2_2 will not impact any other pcie lanes.
Thank you.
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F1Aussie
Level 11
In response to STARRAIN_ROG

‎10-11-2022 10:15 PM

Great, that is what I was hoping, thanks for the prompt reply.
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F1Aussie
Level 11
In response to STARRAIN_ROG

‎10-12-2022 12:23 AM

STARRAIN@ROG wrote:
Hi F1Aussie,
As you mentioned only M.2_3 slot will reduce the PCie x16_1 slot down to x8 in the ROG STRIX X670E-E GAMING WIFI manual, M.2_1 and M.2_2 will not impact any other pcie lanes.
Thank you.

A follow up question, does the thunderbolt header take up pcie lanes? If it does I assume it would take lanes away from the second M.2 slot? Or it only does this if the thunderbolt header is used?
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STARRAIN_ROG
Customer Service Agent

‎10-13-2022 02:15 AM

Hi F1Aussie,
The thunderbolt header doesn't take up pcie lanes but it would take up 4 pcie lanes when thunderbolt card installed in.
Thank you.
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F1Aussie
Level 11
In response to STARRAIN_ROG

‎10-13-2022 04:52 PM

STARRAIN@ROG wrote:
Hi F1Aussie,
The thunderbolt header doesn't take up pcie lanes but it would take up 4 pcie lanes when thunderbolt card installed in.
Thank you.

That is awesome, thanks for that info! I just have to wait for one to become available now. Cheers
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sagehornung
Level 7
In response to F1Aussie

‎10-16-2022 03:28 PM

Just curious. Why would it matter if the first slot ran at 8x speed. It's pcie5 so that would be equivalent to pcie gen 4 at 16x. Even the brand new 4090 is only pci gen 4. I am also interested in this board. I would definitely like to populate all the nvme slots. I guess I could buy a card and pop it in the 2nd pice slot. But in theory this would only make a difference on future cards that don't exist yet. Maybe rDNA 3 but I already have an Nvidia card. As a side note I hope I can get some decent timings on my ram. I got some 6400 cl32 stuff. Maybe later on who knows
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