Fun on the Bus (PCIe)

Fun on the Bus (PCIe)

 

The fun in question is the motherboard comes with

3x PCIe 16x slots

3c PCIe 1x Slots

 

I have my Graphics card in the first and fastest PCIe x16 slot

I had my sound card in a PCIe x1 slot and the the PCIe x4 SCSI card went into the bottom x16 slot, it worked fine.

But my sound card disappeared! I found that using a second x16 slot disables ALL of the x1 slots.

I enabled onboard sound which isn't a terrible Realtek chipset and removed my sound card. Plus points: a littlle less power consumed probably and more space around the graphics card for air flow! Apparently the M2 slots effect at least the bottom two x16 slots bandwidth too.

I guess peripheral bandwidth is maxing out the Bus width at its designed clock speed

 

Done