A friend of mine is trying to install two new NVMEs (as long as I know the mobo has the slots) and he's saying that only one of them is being recognized, he says it's cause his CPU (I7 10700K) doesn't have enough PCIe lanes but man, I searched and it has the same amount as my Ryzen 5 5600X and I'm using an NVME with my GPU here, which I suppose adds up to 20 lanes? (4x + 16x) so now I'm confused, how do we calculate that?
#Help with Intel's PCIe lanes!
astral cloak
swift copper
he says it's cause his CPU (I7 10700K) doesn't have enough PCIe lanes
That's not how it works. Not all ports have dedicated lanes. Aside from the top GPU slot and top M.2 slot, the rest of the ports will share the same 4 lanes. That's how motherboards can have so much I/O despite there not being enough lanes to dedicate to every single slot
However, using certain slots will disable other ones.
Do they have any SATA SSDs/HDDs installed? Check the motherboard manual to see exactly what gets enabled/disabled when using those M.2 ports.
What's the exact motherboard model?
astral cloak
I'll ask the mobo model but I only know it's a Gigabyte one and yes, he has at least 3 more SATA drives (HDD or SSD, he didn't specify it). But based on what you said (I remember now that Linus said that in a video xD), it's pretty unlikely that the CPU is to blame here right?
swift copper
Very unlikely
Odds are that M.2 slot is mutually exclusive with one or more of the SATA ports he is using. Only way to confirm is to get the exact motherboard and look up the manual
astral cloak
Makes sense! He's not sharing the model, little stubborn ahole, but I though smth was off xD I'll try to ge the model but so far, you alread helped a lot man! Thanks!!
B560M H
Here we go!!
Gigabyte!
ionic basin
sanic
swift copper
The top M.2 slot doesn't work because it's only supported by 11th gen CPUs, they have a 10th gen CPU
ionic basin
can you please help me
swift copper
can you please help me
This is very much not the way to ask for help
ionic basin
my bad
swift copper
You posted a thread 2 mins ago, be patient
ionic basin
im just desperate atp
swift copper
So @astral cloak We were both kinda wrong - One of the ports is only supported by 11th gen CPUs
astral cloak
So <@759184665990660104> We were both kinda wrong - One of the ports is only sup...
Got it! So yes, the CPU is "wrong" cause it's not 11th gen BUT, the mobo is the one that "only supports" the 11th gen! It's not a "lane" issue right?
swift copper
10700k has 16 lanes
11700k has 20 lanes
Looks like it's a lane availability thing, TIL
astral cloak
Makes sense! Thanks man!