Yep, installed and apparently working now too. The fan still doesn't sound especially "good" if you really listen close up but I'm assuming that's just these cards. It's certainly not clicking anymore.
Many thanks PCSpecialist, excellent work. Not least for the trusting me to fit the damn thing and for the being able to read this forum thread and organise the RMA without anyone having to pointlessly restart anything.
Many thanks PCSpecialist, excellent work. Not least for the trusting me to fit the damn thing and for the being able to read this forum thread and organise the RMA without anyone having to pointlessly restart anything.