So...I'm warming up to test round 5, with three new additions sponsored by another community member vhaarr...thanks!
Also a special thanks to Hondacity for the GT I'll be using as a baseline.
The latest contenders:
The Gelid and Artic Cooling fans both sport a more pressure oriented 9 blade design, while the Noise Blocker uses a more standard 7 blade option.
As far as bearings go, the Gelid uses a "Nanoflux" bearing. The noise blocker is using what they call a "NB Nano-SLI" bearing.
It seems... the word "NANO" is becoming the standard Buzz word and not just for coolants....
The half price Coolermaster is sporting a "Long Life Sleeve" bearing, so I'm curious to see if we're paying an extra $10 for the word or if there are real noise benefits to the higher end bearings..we will soon see..
I may also run a few other fans I have collecting, namely the Yate medium with curved blades since it performs so well for the price, but also the Zalman ZM-F3 since I believe it edges out the yate and fitting of the $10 category.
I finished the new Test Chamber this evening, and just starting in on some anemometer calibration. Here is a quick summary of changes all in an effort to deaden any possible test rig induced noises plus improve the anemometer readings through flow straightening and volume:
- Heavy Walled 8" PVC structure
- 21" Overall Length
- Flow Spreader built using 1" ID ABS pipe x 4" length, Chamfered
- Anemometer vane probe now fixed over a reduced 3.5" ID circular cross section (Better Low CFM response)
- Rad Board Template is interchangable for 140mm fan compatibility or other options
- 4X Larger Internal Volume (1000+cubic inches vs 250) for more stabilized flow
- Heavy Duty Rad Board(3/4" Hardwood Plywood) for reducing any resonance
I'm also a bit on the fence about testing with or without a gasket..
Would you guys prefer to see the testing occur with a vibration isolation gasket or not?
I have a spare TFC noise absorber I had in the drawer I can make use of easily enough...??
Should have time to make the video runs this weekend I think..
Also let me know of any particulars you'd like to see..
Made some more changes to the sound chamber, and started the unboxing, figured I'd share some pictures as testing gets started:
So far they are all nice fans, but I'm most impressed with the Noiseblocker gasket/grommet system, it's really nice (completely isolates the screw) and a tight custom fit to this fan for case fan type installs. I also like the modular sleeved wire lengths to pick from, this is all a step above most fans regarding accessories.
A few of the videos are ready for your review:
R5 Fan Test Cooler Master R4 2000RPM R4-C2R-20AC-GP DF1202512RFUNCF
R5 Fan Test Gelid FN-FW12-15-B Wing 12 1500RPM
R5 Fan Test Noise Blocker PL-2 1400 RPM Black Silent Pro Fan
R5 Fan Test Servo Nidec (Scythe) Gentle Typhoon AP-15 1850RPM
R5 Fan Test Yate Loon D12SM12 Curved Blade Black 1650RPM
R5 Fan Test Zalman ZM-F3 1800RPM
R5 Fan Test Noctua NF-P12 1300RPM
R5 Fan Test Modified Silverstone AP121 1500RPM
R5 Fan Test Push + Push Yate Loon D12SM12 Curved Blade 2X fans
R5 Fan Test Push + Pull Yate Loon D12SM12 Curved Blade 2X fans
COMPARISON NOISE LEVEL VS CFM CHARTS
COMPARISON VIDEO LINK