Ho Ho Ho!
The replacement fan was delivered this morning - BFB0512HA-C @ 32.5 dBA ordered directly from
Digi-Key ... BFB0512MA-C @ 28 dBA is on backorder but is expected this week and I am getting that too.
After wiring the 2-pin power plug and replacing the small heatsink I had installed earlier with a 22mmx22mmx4mm pure copper heatsink for better heat dissipation, PCIe ambient and NVMe drive temps have
dropped by 8 degrees celcius under heavy write load and at a higher room ambient temp!!
Fan sound is acceptable and on par with the system fans in comparison to the card's noisy factory fan =)
Previous results without fan but with small heatsink
PCIe ambient @ 33~34C and NVMe drive @ 38C peaking at 46C under heavy writes with the PCIe fan spinning at 1000rpm and room ambient temp at 25C
Current results with new fan and heatsink
PCIe ambient @ 29C and NVMe drive @ 36~38C peaking at 41C under heavy write with the PCIe fan spinning at 800rpm and room ambient temp at 28C
and finally some photos
Happy Holidays!
Edit: corrected Digi-key link
Update: Shifted the NVMe drive from slot 1 to slot 2 so it's in the path of the airflow which resulted in a drop in drive temperatures to 33~34C under normal use and 38C under heavy writes. I recommend slots 2 and 3 for optimal drive cooling. Updated post to reflect new temperature ranges.