DeepCool has hammered the PSU market with new products these last couple months.DeepCool made a new upper-mainstream addition to its power-supply lineup, the Quanta DQ850.The Quanta DQ850, a power supply capable of provide 850 watts power and efficiency certification 80Plus Gold (ensuring an efficiency of 88 to 92% depending on load level).
Under his case found a design with a single powerful + 12V rail capable of delivering 70 amps, so it is perfectly valid to serve graphics cards the higher range such as the Radeon R9 295X2 or GeForce GTX Titan-X.
It also incorporates security measures such as an active filter EMI (electromagnetic interference) double layer PFC (power factor correction), i-Eco (a technology that allows you to completely cut the power when consumption is less than 1 watt ), and CircuitShield (a set of typical as overcurrent protection, bajocorriente, short, etc.).DeepCool has integrated a fan of 140 mm in diameter and PWM function to cool this Quanta DQ850, which also has an automatic shutoff when the source is not under load (ie, when the computer is on but rest).
Packaging & Contents
The DeepCool Quanta comes boxed in a rather basic, gold and black package, likely a takeoff of the 80Plus Gold certification for the unit. Contained on the front is some basic info such as the wattage, modular cable design, and fan.
The rear of the box provides more detailed information about the specific features, DC ouput specifcations, and 92% peak efficiency.
This side of the box lets us know how many connectors of each type are available for the unit.
The other side gives us the rails info for the DQ850.
The Deepcool Quanta DQ850 850W's retail packaging can be opened by a flap attached on the bottom. Upon opening the box, you will find everything neatly organized inside. The power supply is wrapped in a bag, while the modular cables are sealed inside a clear plastic bag next to it.
Inside we find some screws, a power cable and a warranty card – very basic indeed.
Since DeepCool Quanta units are not fully modular, the additional cables are included in the box, packed separately.There is a good assortment of modular cables, with sufficient lengths, although you might have a bit of a stretch in some instances if you’re going with a full tower.
Quanta DQ850 EVO has flat ribbon cables.All modular cables are easy to bend, making them extremely easy to work with. Surprisingly, all wires are 18 AWG, including high current PCI Express and ATX/EPS connectors. Usually, manufacturers will fatten them up to 16 AWG, but Deepcool opted out on that.
The modular cables include four PCIe 6+2 pins ,10 SATA,and 6 Molex which is a nice selection.
The PSU
Deepcool make use of a textured black PSU enclosure while the overall style of the PSU is dominated by the fan grille and 140mm black fan.
Meanwhile, six screws secure the cover onto the rest of the power supply case together,where one screw has a warranty seal over it, so you cannot open the power supply without voiding the three year warranty.
The base is plain and gives us a closer look at the textured finish that Deepcool use.
At the rear we find ventilation mesh, a power switch and the kettle lead input. 100-240 VAC is supported.
The voltage specification label on the right panel of the Deepcool Quanta DQ8750 850W.The Deepcool Quanta DQ850 850W is 80 Plus Gold certified, which means that it is certified to be at least 87%, 90%, 87% efficient at 20%, 50%, and 100% load, respectively. Higher certifications available for power supplies of this type include 80 Plus Platinum and 80 Plus Titanium at press time.
A large sticker on the left side has the model name.
The DQ850 uses a semi-modular design with clearly labelled connectors, the hard wired cables come with basic sleeving.
Cables with connectors ATX (24 pins) and EPS (4 + 4 pin) fixed rigidly and cables with four power connector PCIe (6 + 2-pin), eight SATA connectors and four Molex connectors are connected as desired.
A Look Inside
Internally the Deepcool DQ850 seems to be a CWT OEM design based on what I’ve seen before from CWT units.
The AC receptacle features line filtering from a handful of X and Y capacitors.
A high quality 140mm Yate Loon fan is used. The D14BH-12 part is capable of up to 2800 RPM which produces 140 CFM and 48.5 dBA.
Rectifier bridge using parallel diode connections to reduce the conduction resistance. In order to improve the overall efficiency of the power supply, the back of the rectifier bridge is coated with thermal grease and mounted on a separate aluminum heat sink.
The primary hold up capacitor offers 680 uF at 400 volts and 105 degrees celsius. This seems powerful enough for a 850W unit.
Two PFC switch(Vishay Siliconix, G30N60E, 30A / 600V).
PFC diode using a silicon carbide diode ROHM SCS110AG, 600V / 10A.
Two switch circuits are equally LLC Vishay Siliconix, G30N60E, 30A / 600V.
12V input and output filter uses four NCC KZE electrolysis, 2200μF / 16V and two 470μF / 16V solid capacitors.
A small PCB houses three IR PQFN with IRFH7004PbF MOS,monolithic 40V / 100A / 1.1mΩ.
Front DC-DC daughter board uses a lot of solid capacitors.
A dual DC2DC ANPEC APW7159 control.
IC Infineon (ICE2HS01G),is a high-performance half-bridge resonant LLC master.IC for the PFC master,is also from Infineon (ICE1PCS01).
Control IC is a Weltrend WT7502.
The PCB on the back is relatively clean.
Test System
Below we report the instrumentation used in the test phase for DeepCool Quanta DQ850.
PowerKiller 2.0. Test bench designed for power supplies up to 2185W.
Stingray DS1M12 USB Oscilloscope
PCE-PA 6000 Wattmeter
Range 1W ~ 6kW
Accuracy ± 1.5%
Multimeters
3 x HT81
1 x ABB Metrawatt M2004
1 x Eldes ELD9102
1 x Kyoritsu Kew Model 2001
1 x EDI T053
Scythe Kama Wireless Thermometer
Center 325 sound level meter
Voltage Variance
Load regulation is quite good, although there is some noticeable shift on the +12V rail.
Cross Load
The power supply deal with the intensive Cross Loading test without a problem. It was tasked with 60A on the +12V rail and it held at 11.94V. The other rails delivered good results also.
AC Ripple
Noise suppression results are decent, with all rails falling within the rated tolerance guidelines. The +3.3V and +5V peak at 20mV at full load. The +12V rail hits a maximum of 45mV at 850 watts load.
Efficiency
Efficiency is excellent, peaking at just below 92 percent at 50 percent load. This drops to just above 90 percent at full load.
Noise
The fan spins slowly until around 600 watts is demanded and it spins up quickly to compensate for rising temperatures. At full load the fan is clearly audible as it is spinning close to the rated limit.
Temperature
The large fan helps to ensure that rising load demands are met with increased air flow.
Conclusion
For many, a 850 watt power supply is the perfect capacity. The majority of enthusiast gaming systems will require around 400-500 watts under load, so this Quanta DQ850 will be running at optimum efficiency, between 50 and 60 percent load.An added benefit is that there is plenty of future proofing for those people gaming with a single graphics card today. With four 6+2 pin PCIe connectors there is plenty of support for a Crossfire or Sli system. Obviously if you want to game with three or more high end graphics cards you should be looking at a DQ1000/DQ1250 units. The quality of finish is generally solid. The quality of the modular cabling is excellent.They will be easy to route, improving the appearance of a system build. The modular design will be welcomed by appearance driven system builders,while this Quanta DQ850 is not a ‘pure modular design’. CWT are not a company I would immediately associate with a high end unit, but the DeepCool Quanta DQ850 is a design clearly not accepting any compromises. They are using high grade components throughout, supplemented by 105c rated capacitors. DQ850 ripple suppression is quite good, and load regulation results indicated solid performance across a wide range. Efficiency is strong, peaking around 92 percent between a 40 and 60 percent load. There is no doubt the DeepCool Quanta DQ850 has been created to target the enthusiast audience building a new dual GPU SLi or Crossfire system – at a very specific price point.
The latest DeepCool Quanta DQ range of power supplies is the companies first major attempt at bringing a high grade 80 Plus Gold Certified power supply into a very competitive price zone.
Right now we have no links to buy, but I have been told that the price will be around $130 inc vat mark.The unit is backed by a 5-year warranty.
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