Thermal Resistance VS Sound Pressure Level

During our thermal resistance vs. sound pressure level test, we maintain a steady 100W thermal load and assess the overall performance of the coolers by taking multiple temperature and sound pressure level readings within the operating range of the stock cooling fans. The result is a graph that depicts the absolute thermal resistance of the cooler in comparison to the noise generated. For both the sound pressure level and absolute thermal resistance readings, lower figures are better.

In these graphs, we can see where SilverStone’s new Permafrost coolers really stand out. Although the PF 240 and PF 360 do not break any thermal performance records directly, it can be seen that they can offer the same level of thermal performance at a significantly lower level of noise. The PF 360 in particular is almost unaffected by the speed of its fans while these spin above 1200 RPM, with any increase in speed resulting in minuscule thermal performance gains, meaning that the massive cooler can retain most of its performance even if its fans are rotating at half speed. The PF 120 is very different compared to its larger siblings, being unable to match them in terms of performance no matter how quickly the single 120 mm fan spins, but it also cannot ever get too loud, maxing just above 36 dB(A) with the fan at maximum speed.

Testing Results, Low Fan Speed Final Words & Conclusion
Comments Locked

71 Comments

View All Comments

  • PeachNCream - Wednesday, June 17, 2020 - link

    I can't see advantages in adding software and hardware complexity purely for lighting, but addressable RGB seems to be doing just that. More lines of code in which to make errors, more hardware that can fail, and a bigger software footprint for possible compromise and exploitation (nevermind the possible requirement of internet connectivity and awareness of said control software like Razer seems to require which is a by-design potential security problem).
  • eastcoast_pete - Wednesday, June 17, 2020 - link

    Agree! I wish reviewers could add (estimate) just how much the LEDs and associated hardware add to the BOM. I'd rather have an AIO cooler for $ 5 less with no lightshow.
    The only time any LED lighting of the cooling fans could be useful if they would activate or change colors with the CPU temperature (e.g. green, yellow, red); that would, at least, be of interest and tell me if the cooler is doing its job.
  • QB the Slayer - Wednesday, June 17, 2020 - link

    Well... as much as I agree. I do have a bunch of RGB stuff that I really only have since it came with the gear I purchased. But since I have it, I might as well use it! So I have ALL my RGB linked and it actually is linked to the CPU temp... Nice and cool blue when 45°C or less and burning hot red at 85°C or above. MB has 5, GPU has 20, AIO has 16, and mouse has 2... again nothing I went out of my way to get, but they are there. JackNet RGB Sync is a handy little app for this. All this does have a cost though... 3 apps must be running and they are not light in any way (iCUE, G HUB, and JackNet). Thankfully iCUE has an ASUS plugin so that doesn't have to run and the GPU and board can be linked with a cable so no app for the GPU either... Ugh, I am rambling now, sorry guys.

    QB
  • PeterCollier - Wednesday, June 17, 2020 - link

    Repeat after me: AIO cools no better than air and will leak.
  • PeachNCream - Wednesday, June 17, 2020 - link

    Would be nice to see a couple of air coolers in the benchmark charts just for the sake of completeness. I wonder if that would paint these liquid coolers in a poor light though.
  • BenSkywalker - Wednesday, June 17, 2020 - link

    https://www.anandtech.com/show/14621/the-noctua-nh...

    AIO wins easily which shouldn't surprise anyone. The best air coolers can best the worst AIOs by a little providing you are ok with a cluttered sloppy build and rarely need to open your case for anything and you like having more noise.
  • khanikun - Wednesday, June 17, 2020 - link

    Imagine if they tested in a hot room. I have 3 desktops. 1 on custom loop and two on AIO (one Cooler Master and one Corsair). I use to live in Germany, where they don't seem to believe in A/C. So my computer room easily climbed into 85-90F. I couldn't keep any of my machines cool on air.

    I seem to be doing alright with my AIOs or my custom loop. My Cooler Master AIO was just $55. My Corsair AIO was $115. I have no idea how much my custom loop was, like $500. Owned each of them between 2-3 years now.
  • Lord of the Bored - Thursday, June 18, 2020 - link

    I can't imagine your computers running 85-90F in a room with no AC. Because that is sub-ambient right now where I am.
    Air conditioning is God's gift to Texas.
  • Lord of the Bored - Thursday, June 18, 2020 - link

    I misread that. Computer room != computer.
  • khanikun - Friday, June 19, 2020 - link

    Ya, computer room. My CPU sits around 30-35C for my custom loop (dual 360 rads/push pull fans), depending on whether it's winter or summer. My AIOs are in the 40s (240 rads/push pull fans).

Log in

Don't have an account? Sign up now