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Cooler Master Reveals The Long-Awaited MasterWatt Maker 1200 PSU

After a long wait, Cooler Master finally revealed its top-of-the-line PSU offering, the Titanium efficiency MasterWatt Maker 1200. This unit is based on a digital platform made by Enhance Electronics, and in addition to a Windows application called Cooler Master Connect, CM also developed apps for iOS and Android devices, which means that you will be able to monitor/control the PSU through your smartphone or tablet via the Bluetooth V4.0 protocol.

At CES 2016, we were informed about two MasterWatt models with 1.2 kW and 1.5 kW capacities, respectively, but it seems only the smaller unit will hit the production line, at least for now. Hopefully, we will also see the larger version released in the near future. 

The MasterWatt Maker 1200 addresses enthusiast users who aren't intimidated by the high price tag, which, according to our sources will be close to 400 bucks. Such a high price puts it on par with the top-notch, and even stronger, Corsair AX1500i, which currently holds the top place in our relative performance chart. Consequently, the MasterWatt has to offer ultra-high performance levels in order to be a more appealing choice.

According to CM, the unit uses a 3D circuit design that drastically reduces energy loss and saves some internal space. Restricting energy losses is of immense importance when you're after Titanium efficiency. A shot at the internals shows a pretty cramped PCB. There are four bulk caps, and we also noticed a full-bridge design, with the primary switching FETs installed onto a relatively small heatsink. The other two heatsinks retain Enhance's characteristic design, although their fins aren't so long. The electrolytic caps are provided by Rubycon, so it is safe to assume that they are of high quality. Polymer caps filter the minor rails.

The couple of PFC chokes is an indication for an interleaved PFC, where two APFC converters operate in parallel, with a phase difference among them--something that leads to reduced input/output current ripple and also lowers conduction losses. This translates to higher efficiency, and on top of that, it doubles the effective switching frequency.

On the modular board, Enhance uses a number of polymer caps in order to further suppress ripple. Given that so far Enhance hasn't released a platform able to meet Super Flower's ripple performance, we're curious to see how the MasterWatt will fare in this area. Reducing ripple demands the usage of an extra number of components (i.e., capacitors and chokes) and naturally a percentage of energy is lost on these parts, especially at higher loads. This is why most manufacturers choose to sacrifice a part of ripple performance in order to achieve high efficiency levels.

However, this is a digital platform, so it doesn't have the limitations of analog designs. Therefore, it should be able to score high efficiency and low ripple at the same time, and taking into account the fast response time of digital controllers, we also expect strong performance in transient tests. Nonetheless, we will have more solid data on this PSU's performance once we have the MasterWatt on our test bench.

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The cooling fan (Silencio FP) has a 135 mm diameter and promises especially silent operation. The fan's job becomes easier when the thermal loads are low, something should be possible in such a high-efficiency PSU.

The PSU utilizes a fully modular cabling design featuring specially-designed cables, with heavy duty connectors on the PSU side that, according to CM, are able to handle increased amperage (up to 1.5x more) compared to normal connectors.

The MasterWatt Maker 1200 will hit the market sometime in June, and as we already stated, its price will be around $400, so if you're planning to purchase one, you better start saving money.

TypeATX 12V, Fully Modular
PFCActive PFC (over 0.95 typical)
Input Voltage100-240VAC
Input Current12-6A
Input Frequency47-63 Hz
Dimensions200 x 150 x 86 mm (LxWxH)
Fan type135 mm Silencio FP fan
PowerGood Signal100-500ms
Hold Up Time16ms
Average Efficiency90-94%
MTBF100,000 hours
ProtectionsOPP, OVP, OCP, SCP, OTP
Safety StandardsTUV, CE, FCC, BSMI, EAC, RCM, CCC, KC
Connectors              MB 20+4 Pin x 1CPU 12V 4+4Pin x 2PCI-e 6+2 Pin x 10SATA x 164Pin Peripheral x 124Pin Floppy x 1

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Aris Mpitziopoulos
Aris Mpitziopoulos is a Contributing Editor at Tom's Hardware US, covering PSUs.