Cooler Master did not opt for the HDT design or any variance of it. Instead we see a rather traditional single piece cooling base. In this case it’s full copper. The base has not been coated or Nickle plated but is polished. All heatpipes are joined together here and soldered in placed. The topside of the cooling base is outfitted with an extra cooling body.
The cooler base ensures that the entire area of the CPU’s heat spreader is completely covered.
The heatsink is made up of 45 aluminum fins. The surface of the fins is brushed and uncoated, which makes the surface smooth and gives the finish an aesthetic appeal.
The edges of the cooler on the left and right side are not bent upwards which could act as a air tunnel and compresses air going through the cooler to improve airflow. We can see cutouts for fan spacing in the front and back as well as the sides. These grooves also act as the fan clip holder.
The Cooler Master H612PWM deploys 6 copper heatpipes. The heatpipes are bent a “U” shape and have been left un-coated. All six heatpipes are 6mm in diameter. An interesting design feature Master Cooler implemented is to guide the heatpipes through the front and back of the heatsink instead of the sides. This avoids the heatpipes to be staggered behind the fan and airflow direction and possible falling victim of each others draft.
The heatpipes are soldered to the base and enter the cooling body in a straight line in the front and back.
The fan used for this cooler is not listed on the Cooler Master website. The closest match to it would be the Blade Master (R4-BMBS-20PK-R0). The Blade Master 120mm matches almost all specifications but weight. The Blade Master is 62g heavier then the included fan. The included fan has a different Model# from any of the fans currently listed. It is unclear at the moment if a replacement fan is readily available from Cooler Master but the Blade Master could be used as such.
The fan is a 120mm fan with a Long Life Sleeve Bearing. It is very similar or the same as was used on the Hyper 212. The fan comes with a 4-pin PWM molex connector which does not include a sleeved wire; however, it comes with black colored shielding. The fan puts out a whopping 82.9 CFM at max. speed while consuming 2.64w. The fan also has a standard 7 blade design that incorporates the wave-form that we can see on the Blade Master fan and supports variable speed. The minimum spin up voltage is 6v, and it will generate a maximum of 36 dbA across a fan speed range of 600-2000 RPM.
This cooler is, in a word, heavy. There are no two ways about it but it also packs a lot of cooling power. The H612PWM weights in at 806g without a fan. Adding the single included fan pushes this setup to a total of 910g. The H612PWM supports a 2nd fan. With two fans, the weight breaks the 1kg mark and brings it to 1014g. If you would use 2 Blade Master fan that would further add up to 1158g (yes, we’re talking nearly two and a half pounds of HSF mass). It is certainly a noticeable weight gain and could cause strain on your motherboard if you’re bringing it to a LAN Party or transporting or moving the computer in anyway. Although the mounting mechanism is solid you should proceed with caution when moving the computer.
The mounting assembly is solid and will keep this cooler in its place and help distribute the weight.