Reviews - Coolmax CUQ-1350B 1350W Power Supply
Sample Provided by: CoolMax USA (By OklahomaWolf on Mon, Jun-30-2008)

Page 1 -

Good morning, readers of mine, and how are we today? I have a confession to make: I'm all green today. And it's not because of what I ate last night. Ok, it's not only because of what I ate last night. It's because Coolmax has asked me to take a look at another unit in their Green Power series, the CUQ-1350B. This is a mountain of a PSU offering up 1350 watts of goodness for your most demanding power needs.

You'll remember I looked at a couple other Coolmax units not long ago, the CP-500T and CUG-700B which both failed utterly to impress yours truly. I can't wait to see if this monster turns things around for Coolmax. And so, with no further delay, I'll start things off with a good old box picture.

The CUG-1350B comes in a huge square box, if you can be-leaf it. Worry not, I think I just used up my one and only bad joke on this paragraph. The box is pretty unadorned compared to some boxes I've looked at recently, which gives it a rather clean uncluttered look. And yes, there are some useful tidbits of information on this box too, which I will bring to your attention.

One side of the box gives us a helpful list of all the features Coolmax would like you to know about. Among the above list is a very hard to swallow claim of super high up to 87% efficiency (that'll be the day, right?) and a fan delay-off feature. They also claim a good balance between silence and cooling thanks to the combination of an 80mm and 135mm fan. We'll find out in due time whether these claims are accurate.

Another side of the box holds load tables for the CUQ-1350B and its little 1200W brother. Sharper eyes will have spotted that the only difference between the two is a higher combined 12V rating.

Still another facet of the box gives us a chart with some connectors and connector counts for each CUQ model. Coincidentally, they are identical.

The power supply itself is sandwiched between two layers of foam with a box of modular cables above. The manual is a helpful 32 page booklet in English and French that includes pretty much all the info you need on how to use this monster, lacking only in what 12V rails go to what connectors. So, I'll be sure to give you that info myself later on this page.

Meantime, let's get this massive beast on the photography table.

I think I pulled a muscle getting this thing onto the table. The CUG-1350B is an impressive sight indeed sitting there amidst its included modular cabling. The AC line cord is just as impressive as the rest of it, using hefty 14 gauge wire to bring the power in from your outlet.

You'll note that there are two fans to this unit, a 135mm monster and an 80mm. The 80mm actually has dimpled blades on it. The story goes, this supposedly reduces turbulence and wind noise.

Next to the 135mm bottom fan, there's a sticker proclaiming the usefulness of the delayed fan turn off feature. Looks like it only works at temps above 50 degrees. We'll see about that in the hot box tests - you better believe I can make this thing get over 50 if anyone can.

A shot of the front and the attached cables, alongside the modular connector panel. This puppy is a little unique among semi-modular units in that a fair number of this unit's attached cables are usually made modular too. I'll get into that in a bit more detail later on. But first, labels and load charts are called for.

Just a quick note - on the modular panel, the six pin black connectors are pin compatible with the six pin red ones. Do not mix those up. They might be pin compatible, but they are not electrically compatible. This could be an issue for you color blind folks out there... pay careful attention to the labeled pin assignments and make sure you're running the right cables to the right connectors.


















Max Power






While there is no UL file number on the label, and Coolmax has their own UL file number, it wasn't too hard for me to figure out who the OEM was once I got inside it: Sirtec. I have mixed feelings about this company... some of their units are excellent, but they seem to be tainted by persistent quality control issues. It is my hope that at long last, I have a Sirtec build in front of me able to perform like the awesome unit it promises to be. We shall see, friends.

As promised, here is a shot of the attached cables on this unit. And, there are a lot of them for a modular unit. A full accounting of them can be seen in the cable chart below. I hear you asking about those small yellow and black wires. Those run to the fan monitor connector, and are attached to the RPM feed on the big 135mm fan.

Even considering the number of attached cables, Coolmax still crammed a bushel and a peck of the modular cables in here too. This is good - a 1350W monster can be expected to power a whole lot of hardware, and that can't be done without those important cables.

Type of connector: Coolmax
ATX connector (550mm) 24 pin
8-pin Xeon/EPS connector (570mm) 2*
2 x 2 12V connectors (570mm) 1*
2 x 3 PCIe (570mm) 2
5.25" Drive Connectors (460mm+150mm+150mm) 3
SATA (480mm+160mm+160mm) 3
Fan Monitor (650mm) 1

Modular Connectors

2 x 4 PCIe (560mm) 2
2 x 3 PCIe (560mm) 2
5.25" Drive Connectors (450mm+150mm+150mm) 6
3.5" Drive Connectors (+150mm) 2
SATA (460mm+160mm+160mm) 6

Unit Dimensions(L x W x H)

219mm x 150mm x 85mm

*one of the EPS connectors splits apart

12V rail distribution was interesting, and a bit unusual. 12V1 and 12V2 goes to the modular panel, with the ATX connector also on 12V1. On the permanently attached cables, 12V1 goes to the ATX connector. 12V2 goes to half of the 4+4 modular EPS connector. 12V3 goes to one of the PCI-E connectors, and all drive connectors. 12V4 goes to the final PCI-E and the final EPS 12V connector. A little unusual, in that the hardwired drive connectors are separate from the modular ones, but there you go.

Let us now turn the page and see if we can make the competition to this unit turn green with envy.


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