Reviews - Xigmatek NRP-MC802 800W
Sample Provided by: Xigmatek (By OklahomaWolf on Mon, Mar-28-2011)

Page 1 - First Look

A little while back, I had myself a look at Xigmatek's 700 watt entry into the 80 Plus Bronze market. Since then, people have asked me to also have a look at one of the bigger models as well. So here you have it - the NRP-MC802. This is the 800W unit in the model line. I don't know about you, but I'm feeling rather uncertain about this week's review. And it's not just because I think the men in white coats are finally coming close to tracking down my location.

No, I'm uncertain because while the 700W model did have some nice performance facets, others weren't so good. Like the voltage regulation. And here we sit with a model a hundred watts more powerful on the table, waiting for me to torture it. Well, there's no sense prolonging the inevitable. Let's get to it.

Like we saw in the last review in this model line, the box is shared by all three models. This one has an orange dot next to the 800W model, indicating that yes, yes, we are looking at the 800W model here today. This side of the box also helpfully tells us all about the connector compliment of the unit inside.

Once again, the box is telling us to go green. So, I stared for three hours at a picture of a Rolls-Royce looking to make myself envious. Sadly, it doesn't look like I'm any greener than I was before. It's really too bad - I had several jars of Grey Poupon all ready to go.

There are a few features this side of the box brags about with those three pictures there. First, the unit apparently has a transparent fan. You may remember the 700W model coming with what was only a translucent fan. A transparent one you can see right through. A translucent one only lets light through.

The second picture, or "middle" picture if you will, talks about solid state capacitors inside the unit for the outputs. We'll see on page four whether or not this is the case, as the 700W version didn't have all solid caps in it. Some were, but some were normal electrolytics. Not that there's anything bad about that. Good quality electrolytics have as long a life span as you'd need in most cases.

In the third picture, we see that the unit has a Japanese made primary filter capacitor. Does that mean the rest of them aren't Japanese? That's again something to discuss on page four.

This side of the box shows us fan curves and load tables for all three models.

This is the side of the box with all the features listed. Let me reprint them for you. And by "reprint" I mean "copy and paste from the MC702 review." I mean, they come in the same box, people! If I can't be lazy here, then... I'll finish this sentence some other time.

  • Over 88% efficiency at 230V and 80Plus Bronze certified at 115V.
    Higher efficiency, lower energy loss, cooler our Earth.
    -I presume they mean higher efficiency than an 80 Plus Standard unit, or the like. Surely they don't mean this unit is more efficient than an 80 Plus Gold unit.
  • Solid state capacitors for DC12V output.
    For longer life and more stable performance on DC12V output.
  • Single 12V output rail.
    Better compatibility with higher CPU and VGA 12V output.
    -If by "better compatibility" they mean compared to multiple 43V rails, then I agree. But multiple 12V rails? That's only if the design engineers failed at being engineers. I've said it many times, and I'll say it again - multiple 12V designs are no better or worse than single 12V designs just as long as they're done right.
  • Real power as the same as label.
    Label wattage is real continuously wattage, not peak output at 100% loading.
    -Real continuously crazy Wolfie likes to hear this. Now... what temperature is this rated for at 100% loading?
  • 0.99 Active PFC rate.
    The highest AC utility rate and active switch for universal AC voltage.
    -Not really. The highest PF rating would be 1.0. But that's impossible for a computer power supply. That's because no SMPS design is perfect. An incandescent light bulb could do it, though.
  • DC quality with low ripple noise.
    Low ripple noise DC output for better devices performance.
  • 140mm silent cooling fan.
    Fan bigger, RPM slower, and noise lower.
  • Smart thermal fan control.
    Fan RPM was controlled by temperature and keep silence in typical loading.
  • All DC cables with mesh sleeve.
    Reduce airflow resistance for better thermal release in PC case.
  • PCIe graphic card connector support.
    MC702 supports four PCIe connectors and MC802/1002 supports six.

Here's the contents of the box. A power supply in a cloth bag, a set of modular cables, some screws, some velcro cable ties, a warranty card, a user guide, and a power cord.

The user guide has to be one of the laziest affairs I've ever seen. Yes, it's always good to save paper, but cramming six languages onto one folded sheet of paper is either asking for type small enough to need a microscope to read or for information to be left out. Then again, this is a power supply. They're not that hard to install.

The unit itself is done in a shiny matte black paint job. It's not quite reflective, which is nice. A mirrored finish looks tacky these days. This finish is nice looking, but prone to smudging and scratching.

Here's a shot showing off the modular cable connectors. More on those later.

A peek through the exhaust grille shows us a decent amount of electronic components inside.

Aha! Just as I thought. The fan is the same as the MC702, and therefore is translucent, not transparent. Actually, this looks better in my opinion than a see-through fan would.

Here's the load table sticker for today. The unit can manage 64A on the 12V side of things, which is admittedly a little less than we're used to seeing on a unit like this that uses VRMs to supply the minor rails directly from the 12V line.

Xigmatek
NRP-MC802

+3.3V +5V +12V -12V +5VSB
30A 30A 64A 0.5A 3A
Max Power 160W 768W 6W 15W
800W

Wow - some of these hardwired cables have some length to them. But not the main ATX - it's only 500mm long. That could be an issue for cases that keep the PSU on the bottom.

The modular cable connectors on the unit. The two different kinds both use 8 pin black connectors, but they are not pin compatible. Make sure you don't try to force these if they don't go in easily.

Lots of modular cables come with this model. Let's take a look at a table.

Type of connector: Xigmatek
NRP-MC802
ATX connector (500mm) 20+4 pin
8 pin EPS12V (620mm) 1
4+4 pin EPS12V/ATX12V connector (+250mm) 1
6 pin PCIe (720mm) 1
6+2 pin PCIe (740mm) 1
Modular Cables
6 pin PCIe (700mm) 2
6+2 pin PCIe (700mm) 2
5.25" Drive (500mm+150mm+150mm) 6
3.5" Drive (+110mm) 2
SATA (500mm+150mm+150mm+150mm) 10
Unit Dimensions (L x W x H)
180mm x 150mm x 86mm

 


 

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