Dynatron W23 Performance with an Ampere AmpereOne A192-32X
We are using the high-TDP Ampere AmpereOne A192-32X. This 192 core CPU is a 400W TDP part. As a result, the cooling for it takes careful consideration. At idle, we were in the 49C range in terms of package temps.
We let the unit run at 100% CPU utilization by running stress-ng. After about a minute, we were in the 67C range. By minute seven, we had stabilized at around 71C.
For many consumer CPU cooling solution fanatics, this would seem to be decently warm. At the same time, it is not entirely common to see a server CPU, especially in this class, running at 100% utilization. Usually, these CPUs are running cloud workloads where 100% utilization has negative impacts on tail latencies, important metrics for that class of applications. As a result, this is not realistic, yet it is also still within what we would consider acceptable even using the ASRock Rack AMPONED8’s default PWM fan profiles.
Dynatron W23 Performance with an Ampere AmpereOne A192-32X Noise
Just to give you some sense of noise, running at idle, we measured 36dba at 1m in our 34dba noise floor studio. That was not bad at all.
Under 100% load, we were at about 59dba. The spec sheet says at 100% duty cycle it can reach over 64dba. The fan has a huge impact on power consumption with 20% duty cycle in the 1-1.5W range. At 100% it was over 24W (the spec sheet says 24.4W so we were fairly close with onboard monitoring tools.)
Final Words
We have seen a number of passively cooled heatsink solutions for the AmpereOne. On the other hand, with that ASRock Rack AMPONED8-2T BCM Motherboard we know folks will want to try making tower workstations with it. Given that, the 2U passively cooled heatsinks that are commonly available are not the easiest to integrate. Actively cooled units like the W23 are much easier to use. We specifically got the 3U model because it was $59.99 plus shipping, we needed a 3U heatsink, and this is what we could find.
There is not too much to say here other than this worked, and it was one of the only options out there. Still, we thought we would give this a little feature so folks who might want a heatsink and fan for the AmpereOne can find more information on the W23.
Where to Buy
Here is an eBay Affiliate link to what we purchased.
