Got everything (other then the case.... which will take another 1-2 weeks) setup today.
Findings so far:
2x16GB GSkill Trident 3600mhz ram is only working at 2133mhz (as far as I remember, i had issues with that kit in the past because of missing SDP entry.
Just ordered 4x16GB 2400mhz ECC UDIMMs
Regarding PCIe:
Looks like PCIE6 (the first one) is a full x16 slot, the B550 variant is only x8 according to its manual:
Code:
LnkCap: Port #0, Speed 16GT/s, Width x16, ASPM L0s L1, Exit Latency L0s <64ns, L1 <1us
ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp+
LnkCtl: ASPM Disabled; RCB 64 bytes, LnkDisable- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 16GT/s, Width x16
TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
BIOS offers 8x8x, 8x4x4x and 4x4x4x4 bifurication options
PCIE5 (top blue slot) should be x4, not tested yet (can't access because of the GPU, will switch slots later)
PCIE3 (bottom blue slot) is x4 as expected from inspecting the mainboard.
Code:
LnkCap: Port #0, Speed 8GT/s, Width x8, ASPM L0s L1, Exit Latency L0s <4us, L1 <64us
ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp+
LnkCtl: ASPM L1 Enabled; LnkDisable- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 8GT/s, Width x4 (downgraded)
TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
Tested with a ASM2812 based 2xNVME to x8 card (with a single NVME disk installed, have to find another one for testing).
Is there an easy way, to list all PCIe slots including their width, even the empty ones?