We measured the noise level of our coolers throughout the entire speed range of their fans. Here are the results:
Notwithstanding the lower speed, the Thermalright TY-150 is louder than the older TY-140 fan. The difference is quite large. While the TY-140 remains comfortable at up to 1170 RPM, the TY-150 has to be slowed down to 870-880 RPM for that. To achieve quietness, the TY-140 has to work at 1020 RPM and the TY-150, at 730 RPM. It turns out that the original Archon is better than the new SB-E version in efficiency at the same noise level.
So, we don’t think installing the 150mm fan on the new version was a good solution. On the other hand, we can note that either Archon is quieter than the Phanteks with its two 140mm fans.
Unfortunately, the Thermalright Archon SB-E doesn’t amaze us with its performance and low noisiness as the original Archon did back in the days. We guess there're a whole lot of reasons for that.
First of all, the overall effective surface of the Archon SB-E heatsink is 10% smaller compared to the original Archon, which certainly affects its performance since this parameter is highly important for coolers that have to cope with very hot CPUs. Every super-cooler has a heatsink with a total surface of no less than 10,000 sq.cm whereas the Archon SB-E is only about 8,000 sq.cm.
Second, the fastening mechanism has become less reliable. The plates bend when you tighten the screws, so the pressure is lower than with the Archon and the latter’s original fastener using thick plates and adjustable pressure force. Our sample of the Archon SB-E also turned out to have a curved base (not just convex, but highly uneven), which must have been another negative factor contributing to its not very impressive performance.
Third, while the fins of the Archon SB-E heatsink are spaced out at larger distance, the TY-150 fan at 1100 RPM (or 1010 RPM according to our monitoring tools) isn't a good replacement for the TY-140 in terms of acoustics or performance. As a result, the new Archon is a mere 1°C more efficient than the original version but inferior to the latter in noise.
We guess this may be why the Archon SB-E was quickly followed by the Archon SB-E X2 which is equipped with two TY-141 fans and features improved fasteners from the Archon (referred to as Pressure Vault Bracket System). We will be checking it out in our labs very soon, so stay tuned!