Thank you Mike
for what will likely be the first true comparison of heatsinks on the WWW. So far, my many many hours of HSF review surfing have been mostly an exersize in frustration, reading between the lines, and guessing. Trying to find comparisons where the stock fan comes off and a common reference performance fan is used. Some have come close, but none have really answered the real questions. So... Thank you Thank you Thank you.
I would suggest putting this point first:
Is it considered so good that we just have to see how it does with a quiet fan?
This point alone will appeal to anyone with pride in their product. I also suspect that it is the very best coolers (all Cu, big, well made, etc.) that will do best when run quiet. It seems these are seldom thought of for quiet applications except by the likes of us. Like the Thermalright SLK 800, which fits your other criteria, but the 'so good' factor is the most appealing appeal.
Also, I have often wondered about some HS designs that might require ducting. That is, some heatsinks might need a 80mm -> 60mm converter. Should an open or closed sides type be used? Some HS's could impede airflow and benefiet from the open sides duct, others might better use the increased focus of a closed duct. I run a cheap Arkua 6129 (no Cu core
), tossed the 60mm loud fan, made a closed 80>60 duct with some heavy synthetic felt and hotmelt glue, then glued the duct to the plastic 60mm fan mount that is screwed to the extrusion. I am waiting for my Panaflos, but my 80mm Thermaltake thermistor fan runs real slow and cools much better/quieter than the original 60mm. The Thermaltake doesn't mind the constriction. My rig works better than it should given everything against it, but a top end Arkua or Thermal Integration might do really quite well under a Panaflo (and cheap
). Still the question remains, with a Panaflo, especially undervolted, how would the restricted airflow interplay with performance (stall effects etc.). Empirical testing will tell all, but some very intersting suprises might be lurking in the results, especially at 5v. For unducted HS's, I even wonder if standoffs (let the air leak and move) might help at 5v. Sorry for all the questions.