"M.2 slot wired directly to the pcie lanes of the cpu" What?

[HenrikTJ]

Hi

 

So i was in the middle of watching bitwits new vid titled "I've waited so long to build this PC". At 6:55 in the vid he says what ive titled this post. Ive heard this being said in other build guides but never really understood what this means, so I have a few questions id like to ask about this...

 

1. Are there M.2 slots thats not wired directly to the pcie lanes of the cpu?

2. Whats the difference between an m.2 slot that is wired directly to the pcie lanes of the cpu vs a slot that presumably is not wired in such a way?

3. How do I know if my mobo has such an M.2 slot? (Asus strix b450-I)

4. I assume placing your ssd in the m.2 slot directly wired to the pcie lanes of the cpu gives some sort of performance boost... If so, what is it?

[Electronics Wizardy]

1. normally yea, but depends on the board. Am4 boards normally have one that is directly connected to the cpu, and the rest go to the chipset, 115x board go all to the chipset.

 

2. Normally less bandwidth sharing, but for most users, it won't make any difference.

 

3. Look in the manual, but its normally the top m.2 slot.

 

4. Its a bit faster, and runs at gen 3 speeds in your case, and won't share bandwidth with other devices.

[Letgomyleghoe]

4 minutes ago, HenrikTJ said:

1. Are there M.2 slots thats not wired directly to the pcie lanes of the cpu?

2. Whats the difference between an m.2 slot that is wired directly to the pcie lanes of the cpu vs a slot that presumably is not wired in such a way?

3. How do I know if my mobo has such an M.2 slot? (Asus strix b450-I)

4. I assume placing your ssd in the m.2 slot directly wired to the pcie lanes of the cpu gives some sort of performance boost... If so, what is it?

1. yes, some go through pcie lanes in the chipset which are much slower

 

2. speed

 

3. if its probably in your manual, i believe yours runs through the cpu

 

4. its allows the ssd to run at full speed

[HenrikTJ]

2 minutes ago, Letgomyleghoe said:

1. yes, some go through pcie lanes in the chipset which are much slower

 

2. speed

 

3. if its probably in your manual, i believe yours runs through the cpu

 

4. its allows the ssd to run at full speed

thank you very much!!!

[HenrikTJ]

4 minutes ago, Electronics Wizardy said:

1. normally yea, but depends on the board. Am4 boards normally have one that is directly connected to the cpu, and the rest go to the chipset, 115x board go all to the chipset.

 

2. Normally less bandwidth sharing, but for most users, it won't make any difference.

 

3. Look in the manual, but its normally the top m.2 slot.

 

4. Its a bit faster, and runs at gen 3 speeds in your case, and won't share bandwidth with other devices.

thank you so much!!!