[SOLVED] PCIe Lanes question

May 5, 2020
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I'm so confused at calculating my own lanes and I'm not sure if I have enough lanes to properly add another M.2 to my build. I have a AMD Ryzen 3900x 24 lanes, 20 usable. I have 16 for my GPU, 4 for my M.2. So will it bottleneck if i were to add another M.2? I wanted to add a second one for mostly running games off of but will i experience issues with this? Noticeable ones to the point where it won't seem like i'm even running the games on a M.2? I'm looking to add the another of the same but maybe a 1TB. I'm confused because I also have more than just these that also take up lanes but I realize they won't all be at the same time but running a game on a second M.2 might be noticeable because of the GPU and my OS on first M.2 and games on the second.

My Build: https://pcpartpicker.com/list/RFny7T

Thanks so much for your time and help.
 
The chipset itself has additional PCIe lanes, it won´t bottleneck your 2nd M.2

Storage
3rd Gen AMD Ryzen™ Processors :

1 x M.2 Socket 3, with M Key, Type 2242/2260/2280/22110(PCIE 4.0 x4 and SATA modes) storage devices support

AMD X570 chipset :
1 x M.2 Socket 3, with M Key, Type 2242/2260/2280/22110(PCIE 4.0 x4 and SATA modes) storage devices support

 
Reactions: QuackersPI
The chipset itself has additional PCIe lanes, it won´t bottleneck your 2nd M.2

Storage
3rd Gen AMD Ryzen™ Processors :

1 x M.2 Socket 3, with M Key, Type 2242/2260/2280/22110(PCIE 4.0 x4 and SATA modes) storage devices support

AMD X570 chipset :
1 x M.2 Socket 3, with M Key, Type 2242/2260/2280/22110(PCIE 4.0 x4 and SATA modes) storage devices support

 
Reactions: QuackersPI
I'm so confused at calculating my own lanes and I'm not sure if I have enough lanes to properly add another M.2 to my build. I have a AMD Ryzen 3900x 24 lanes, 20 usable. I have 16 for my GPU, 4 for my M.2. So will it bottleneck if i were to add another M.2? I wanted to add a second one for mostly running games off of but will i experience issues with this? Noticeable ones to the point where it won't seem like i'm even running the games on a M.2? I'm looking to add the another of the same but maybe a 1TB. I'm confused because I also have more than just these that also take up lanes but I realize they won't all be at the same time but running a game on a second M.2 might be noticeable because of the GPU and my OS on first M.2 and games on the second.

My Build: https://pcpartpicker.com/list/RFny7T

Thanks so much for your time and help.
No, no bottleneck, second M.2 is controlled by chipset anyway.
 
Reactions: QuackersPI
May 5, 2020
23
0
10
0
The chipset itself has additional PCIe lanes, it won´t bottleneck your 2nd M.2

Storage
3rd Gen AMD Ryzen™ Processors :

1 x M.2 Socket 3, with M Key, Type 2242/2260/2280/22110(PCIE 4.0 x4 and SATA modes) storage devices support

AMD X570 chipset :
1 x M.2 Socket 3, with M Key, Type 2242/2260/2280/22110(PCIE 4.0 x4 and SATA modes) storage devices support

Thanks so much. I feel like a noob and don’t really understand PCIe lanes and to get a final count on what I’m using. I should’ve assumed it would be fine because it would be weird for it all to support 2 and Ryzen 9 should be able to handle it I thought haha
 
May 5, 2020
23
0
10
0
No, no bottleneck, second M.2 is controlled by chipset anyway.
Thanks friend. I appreciate the response. I still feel lost in my personal understanding of PCIe lanes but I’m gonna read more about them and my chip specifically. Counting the lanes with what I have confuses me and I’ve considered myselr knowledgeable with PCs...May have to rethink that haha
 

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