Nicely done, quality built heatsink and does its intended job - to make an RTX A2000 Ada grpahics card fit into a Minisforums MS-01 computer.
Thermal wise it works for day-to-day use maintaining a 75°C to 85°C temprature range under average workloads. But I'm using this MS-01 system to perform AI tasks that are a bit more demanding than this heatsink can handle. It's unable to keep the GPU under 90°C when under 100% load and drwaing 70W. As Robbe suggested, I used the MSI app to adjust the fan profile but that made no difference. Even with the fan running at 100% (5,000rpm) from bootup, the card still overheated when running AI in batch mode. I'm asking for a bit more headroom than what this heatsink was designed to provide.
In order to use the stock configuration of the RTX A2000 Ada card in the MS-01, I cut off the mounting tab that holds the I/O flange in-place on the MS-01 so I could mount the stock RTX A2000 Ada card - minus the front I/O mount on the card. Can't use the MS-01 case but the card can be used. Temps on the stock configuration, under 100% load and 70W after extended use (greater than 1 hr) stayed in the 75°C to 77°C range. A difference of 15° under full load.
As an exercise, I used an AI model to analyze the heatsink design to see if the airflow could be optimized. After entering a detailed description of the heatsink and asking for an optimization of air turbulence, the fun began in answering AI's questions to further narrow down an optimization. I wanted to do the same inquiry using several AI models to see how close the results would be but I've not had the chance to do that yet. For now, the AI, "optimized results" are to be taken with a dose of salt...
The existing design has 26 fins and uses a 50x50x8mm 12VDC fan which provides a max of 4.20 cfm, a CoolCox, blower fan (model BF5008H12) which has a hydraulic bearing and about as high a cfm rate as you can get from a fan this size. The AI model optimization suggested that a 20 fin configuration would reduce the turbulence (resistance) of the airflow and increase thermal conductivity. It also suggested using a 6.0cfm rated fan and increasing the fin height to 10mm.
I could not find a 6.0 cfm fan that would fit this design but I didn't do an extensive search. I also can't make a 20 fin model that would increase the spacing between the fins but one could experiment cutting out 4 of the fins over the width of the heatsink to see if that makes any difference. Not the same as having 20 fins equally spaced but it could provide a bit of insight.
My overall testing involved a half dozen configuration changes back and forth from stock to the new heatsink to retest. Testing included using synthentic benchmarks as well as real-world use of AI models and monitoring using several recognized hardware apps to insure consistency of results of temprature, load values and fan speed.
If you're using an RTX A2000 the above does not apply - this only applies to the RTX A2000 Ada model.