Deepcool Quanta DQ750 750W (Page 2 of 4) | Reports

Page 2 - Physical Look - Outside

At first look, the Deepcool Quanta DQ750 750W reminds me of the FSP AURUM Gold 600W and the subsequent models we have reviewed since 2011. The volcano rock style, textured metal casing is much more interesting and classier to look at than traditional matte paint finishes in my opinion. A large label shown in the photo above presents the brand and model name in detail. On the opposite side is a specifications table with all the usual certifications and regulatory symbols; more on this later. All text is colored gold to highlight the fact this is an 80 Plus Gold certified unit. To make sure you will see the sticker the right side up at all times, the orientation of it is different on both sides, so whatever side facing the user after installation will always be correct. Residing behind the golden seven ring fan grille -- designed for minimal air resistance while providing adequate protection -- is the primary and only cooling fan installed. The 140mm fan generates airflow by drawing air from the bottom of the power supply over its internal components to keep the temperatures in check. For some extra appearance points, the fan is not just any regular fan. In fact, it is a blue LED fan, which is something I have not seen for years, especially in a PSU. Exhaust heat is allowed to leave at the back of the power supply through the large secondary honeycomb mesh opening.

Measuring in at 16.0cm in length, the Deepcool Quanta DQ750 750W is a reasonably short power supply. It is two centimeters longer than the SilverStone Strider Gold ST65F-G 650W, but the Strider Gold in question is one of the shortest modular power supplies ever made. Most modular power supplies are longer than non-modular units by a centimeter or two, as the extra length is needed to accommodate its connector board at the back. We will take a look inside the PSU on the next page. For most ATX or eATX chassis, length should not be much of a problem, if at all. However, if you have a mATX or mITX case that takes standard power supplies, the shorter length will definitely serve as an advantage. 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.

Starting from the back part of the power supply, we have the same familiar honeycomb mesh design like most PSUs with bottom mounted fans; and the standard on/off switch located on the right of the male connector for power input on the western edge (Given that you look at it from the perspective that the fan is at the bottom). The low resistance honeycomb mesh design is implemented to maximize airflow and minimize air resistance. This is done as heat needs to leave the power supply as easily and efficiently as possible, because the Deepcool Quanta DQ750 750W incorporates only one 140mm fan at the bottom, with no auxiliary fans. However, I think the design can be a little more efficient, as the power input and switch panel occupies nearly a quarter of the rear exhaust area. Ventilating the area next to the AC transient filter stage will probably help. As with most new power supplies, the Deepcool Quanta DQ750 has an automatic full range (100V-240V) AC line voltage selection, so the user does not have to worry about manually selecting input voltage.

Like many modular power supplies in the market today, the Deepcool Quanta DQ750 750W is not a 100% modular power supply. This means most cables are detachable from the main unit, but cables such as the ATX 24-pin and ATX/EPS 4+4-pin are permanently fixed. I personally do not have a problem with this, because they have practically a 100% chance of being connected at all times. The advantage is you will suffer from lower electrical loss at the contacts, but the disadvantage is you will need to deal with a little inconvenience during your initial build. In the end, this comes down to personal preference, and I do not have a problem with this at all.

The rear cable connection panel is done nicely. Similar connectors are grouped together; and are laid out in a very simple manner. To ensure you know what is going on, a diagram is situated on the left for minimal ambiguity. The left group are peripheral connectors, while the two red connectors on the right are for the PCI Express cables. This is it. Incompatible outputs will not physically fit into each other, so I think Deepcool has done a great job in this regard. This simple array of available connectors should be more than sufficient for casual users and power enthusiasts alike.

The external build quality of Deepcool's Quanta DQ750 power supply is excellent as always -- a good indication the company is serious about the product they are selling. We will take it apart in just a moment. Fit is done well with minimal panel gaps, and all edges are nicely finished off. The level of refinement with regards to the external build quality is comparable with all the other high quality PSUs I have used in the past -- the difference is its physical design is not special at all. As aforementioned, we will crack open the power supply to see what components are inside in the following section.

The voltage specification label on the right panel of the Deepcool Quanta DQ750 750W. There are two main virtual rails. Up to 20A can be delivered via the +3.3V rail for a total of 66W; while the 20A on the +5V rail brings the output to 100W in this area. The total combined output for the +3.3V and +5V rail is 100W. In other words, your power allocation combination must fall within the limits of the listed specifications. Meanwhile, a single powerful +12V rail delivers up to 62A (744W) to reduce operating overhead compared to multiple +12V rails. Overall, the combined power output for the whole DQ750 is... well, 750W haha. Again, your power distribution in your system must fall within the limits provided -- it must not exceed 66W on the +3.3V rail, 100W on the +5V rail and 100W combined for both, 744W on the +12V rail, and 750W combined between the +12V and +3.3/+5V rails. It does sound a bit confusing to understand how this works at first, but generally speaking, this configuration allows fairly flexible power demands and should be sufficient to accommodate most users. The overall distribution is not bad for a 750W power supply, but I have seen beefier +3.3V and +5V rails even in lower wattage units before. The SilverStone Strider Essential Gold ST70F-ESG 700W comes to mind.

The Deepcool Quanta DQ750 750W 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 total of five modular cables are included out of the box. For some reason, the website states six modular cables are included out of the box, so I thought I was missing one at first. This made sense, considering their are six connectors at the back of the Deepcool Quanta DQ750 750W. However, when I checked the side of the box, the amount of connectors advertised matched up with the quantity of cables I had on hand. This discrepancy between the website and box was quite confusing, and I think Deepcool should fix it up.

All modular cables are flat and 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 following cables are permanently fixed to the power supply:

- 1x ATX 20+4 pin, 50.0cm
- 1x ATX/EPS 4+4 pin, 65.0cm

The following modular cables were included out of the box:

- 2x PCIe 6+2 pin, 2 connectors each, 50.0cm to first connector, 15.0cm spacing thereafter
- 2x SATA (x2) and Molex (x1), 3 connectors each, 50.0cm to first connector, 15.0cm spacing thereafter
- 1x SATA (x1) and Molex (x2), 3 connectors each, 50.0cm to first connector, 15.0cm spacing thereafter

These are just specified measurements from the manufacturer. Most users should not have problems with Deepcool's Quanta DQ750 750W for ATX cases equipped with a standard bottom power supply mount. 50cm is the general standard, and this power supply met or exceeded this recommendation in all counts.

Page Index
1. Introduction, Packaging, Specifications
2. Physical Look - Outside
3. Physical Look - Inside
4. Minor Tests and Conclusion