Testing Results, Maximum Fan Speed (12 Volts)

Most of the stock coolers were tested with a maximum load of 150W, lest we start a fire. These products were not meant to handle thermal loads way higher than the stock specifications of the CPUs they were being shipped with.

Average thermal resistance, 60 W to 340 W

Looking immediately at the average thermal resistance and we see three main coolers out in front, and it is no surprise that these three are the beefiest - the EVO 212, the Wraith and the BXTS15A. The small Kabini cooler is designed for very low power, and our small test here pushes it outside of its window.

Core Temperature, Constant Thermal Load (Max Fan Speed)

As we move up the thermal loads, from 60W all the way up, the coolers by and large stay in their positions, with small differences becoming more pronounced as the load increases.

Fan Speed (12 Volts)

The EVO's large 120mm fan keeps the RPM down here, and it is interesting to see the RPM and noise of the BXTS15-A go far and above the other coolers.

Noise level

An interesting observation would be that Intel’s coolers meant for a specific socket have about the same absolute thermal resistance regardless of the core’s material. Taking socket 775 coolers as an example, the aluminum D75716-002 performs similarly with the copper C25704-002, most likely due to its solid core, and the tall copper D60188-001 also performs similarly due to the much slower (and quieter) fan. The same goes for the aluminum E97379-001 and the copper E97378-001 socket 1155 coolers, the former of which simply has a significantly more powerful fan attached. The E31964-001 performs significantly better but its high performance is not just due to its size and copper fins, as the fan is quite fast and loud as well.

In AMD’s camp, the simple and cheap FHSA7015B displays reasonable thermal performance at the expense of comfort, as the maximum speed of its fan is quite high. The more advanced AV-Z7UB408003 offers only slightly better thermal performance but noise levels were significantly lower. The Cooler Master HK8-00005 beats both of the aforementioned coolers in terms of thermal performance but its noise levels are rather high. This was to be expected, as it is based on the core design of the AV-Z7UB408003 but is significantly smaller, therefore a more powerful fan would have to make up for the loss of mass. Finally, the small 1A213LQ00 realistically has by far the worst overall performance of every cooler we tested here today, as the little cooler is designed with AMD’s power efficient AM1 CPUs in mind and cannot be directly compared to any of the other coolers in this review.

Both of AMD’s Wraith and Intel’s aftermarket BXTS15A stand out, pulling ahead in terms of performance the rest of the stock coolers. AMD’s Wraith is but a breath away from Cooler Master’s EVO 212 and the BXTS15A does not fall far behind. There is a catch though and that is the fans. Both the Wraith and the BXTS15A are making use of very strong fans, with a much higher top speed than that of the 120 mm fan that the EVO 212 is using. Strong fans are not just inherently louder themselves but the high air turbulence they create effectively multiplies the sound pressure level of the setup. 

Testing Methodology Testing Results, Low Fan Speed (7 Volts)


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  • bigboxes - Friday, July 22, 2016 - link

    Yup. My Athlon X2 4400+ (Toledo) came with a 4-pipe cooler as well. Never used the stock HSF when it was in my main rig. Got a Zalman which was badass at the time. Used the stock HSF when I moved the Athlon 3200+ (Winchester) to my file server. Reply
  • Marburg U - Friday, July 22, 2016 - link

    OK, but just to recall that DB scale is a logarithmic scale. And the difference between 44.7 and 46.3 is roughly 45% power ratio!!! Reply
  • ZeDestructor - Friday, July 22, 2016 - link

    Perceptually though, odds are you won't observe a difference in loudness (tone is a whole different ballgame): 3dB is the generally accepted number for human hearing to be able to perceive a difference in volume, and 10dB for a perceptual halving of volume. Reply
  • DanNeely - Friday, July 22, 2016 - link

    But also remember that your ears are a logarithmic sensor. So while 10 dB is 10x the sound intensity, it only sounds twice as loud. In this case the 1.6 dB only corresponds to sounding about 15% louder; which is barely noticeable. Other factors like your case material (type, thickness, if sound deadening material is present, locations of fan holes, etc) affecting how much sound gets out from the CPU cooler; and the number, type, and layout if your case fans affecting how hot the internal ambient is and how hard your CPU cooler has to work will all have more significant impacts on how loud your system is. Reply
  • pseudoid - Friday, July 22, 2016 - link

    Logarithmic scale to measure Sound Pressure Levels (SPL) are normally a relative measurement based on voltage (not power). As such, an order of magnitude increase (10X) results in a 20dB (not 10dB) increase in SPL. Keeping with the same SPL measurements, a doubling (octave) or an increase of twice as loud (2x) is a 6dB increase! No need to bring up Fletcher-Munson curves into this correction. Cheers!
  • hailey14 - Friday, July 22, 2016 - link

    "With bulk PC orders it is, of course, a "difference" scenario..."

    some typo.
  • Calculatron - Friday, July 22, 2016 - link

    Wow, I knew the Wraith cooler is good, but I didn't realize that it was that good.

    I have the "quiet" 125 TDP cooler solution, which is the Wraith Cooler without the fancy shroud - same heatsink and fan, though. Maybe I'll keep it around...
  • Lolimaster - Friday, July 22, 2016 - link

    The thing intel non 2011 socket cpu's uses complete trash internal dissipation compound, another reason to not sell it with stock cooler.

    Even with a decent one (juper 212z) you see load temps of 75°C without OC. Meanwhile their new Broadwell-E stays within the 50°C (+/- 2°C) with a similar cooler.

    AMD didn't screw up users with the IHS dissipation.
  • ZeDestructor - Sunday, July 24, 2016 - link

    As many have stated before, Intel has to use TIM on the small cores because the small cores crack from repeated thermal shock when soldered to the IHS. Intel doesn't want to screw you over, but they literally have to! Or do you want 32nm and larger lithographies back? Reply
  • Ascaris - Sunday, July 24, 2016 - link

    They could use a bigger chunk of silicon wafer to help with heat dissipation/bond to the IHS without printing anything on it. It's not as if the smaller litho chips have gotten cheaper because of less silicon usage! Reply

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