the issue is that the cases we're using the Blackridge in mostly are the DanA4, the S4M, the S4M-c, which have max cooler heights of 47mm, because the side panels are basically at 48mm, but if you run a cooler with a fan that's kissing the side panel, you'll not only increase noise but you WILL lose performance because of the side panels lowering airflow due to their obstructing the usually clear path of the air, and increasing air turbulence also as a result. so noise is not the only factor to consider.
This is also exactly what i mean, the cases we're talking about are the ones the Blackridge and IS-47K were designed for, the DanA4 , and by extension the S4M and S4M-c due to identical cooler height limits.
No turbulence, exactly! It is because of the HUGE advantage that having the fan BELOW the heatsink array (sucking cool air into the case and onto the CPU) is why the BlackRidge and the IS-47K are seemingly being lined up as possible competitors. The farther away the fan is from the side panels of the case, the better.
SO..with that said, Believe me, we've tested coolers that have the fan right up against the side panel's of SFF cases, and the performance drops, ON TOP of the noise increasing, all thanks to pesky air turbulence increase due to fan proximity to the side panel, sadly. I wish i could buy the IS-47K from that one alibaba/taobao site for $35 bucks like i saw
@laughingman do
here a few posts back, so i could just thermally pit it up against the Blackridge and END this debate, lol, but I'm strapped for cash at this time and am thus, awaiting for someone with an S4M or S4M-c to do some thermal tests with the IS-47K & Blackridge- BEFORE i buy.. I can't afford to have another CPU cooler purchase, only to have it sit unused because it doesnt beat the Blackridge.. besides.. IDcooling is KNOWN for over-marketing their cooler's TDP performance, hell, at the start of this cooler's PR they said it was 135wTDP, now its 95W TDP on the site, which is HIGHLY suspect.
We all know their IS30 was a crappy vapor chamber cooler, and I dont want this cooler to fool me into buying it either, which is why I'm being so wary and not biting the bullet on this one.