NZXT Precise 1000W Power Supply

robgs - 2007-05-10 21:55:07 in Power Supplies
Category: Power Supplies
Reviewed by: robgs   
Reviewed on: May 14, 2007
American Future Technology
Price: $335.00 US



If you’ve got any kind of up-to-date system, you are well aware of how important having a properly sized power supply is.  From experience, an undersized power supply causes many problems that are seemingly unrelated.  Problems like computer lock ups, BSODs, programs that start having weird flaky problems, even data corruption can occur.  These problems are sometimes hard to troubleshoot and you’ll probably end up blaming your motherboard, RAM, or processor.  The solution to the problem is, of course, to ensure that you have the right size power supply for your system.

If you are anything like me I tend to keep components like my power supply and case for much longer than I will keep the other internal components, like the motherboard or RAM.  So when choosing the power supply, I always try to get the best of what’s available at the time of purchase, to reduce the chances of having to change it in less than a couple of years.  As with most other components in today’s market, you have a wide variety of products to choose from.  Power supplies range from 200W to 1200W and are continuing to increase in output and available options.  NZXT is a relatively new player in the market of cases and now power supplies.  The Precise 1000W is one of the newest power supplies that it has to offer.

NZXT is a company whose philosophy and direction is guided by the idea of keeping up with the gamer’s dreams.  Based in Taiwan, NZXT is a relatively new player in the market of computer cases, and even newer to manufacturing power supplies.  Established in 2004, NZXT has wowed the computing community with its beautifully designed and well thought out products.

Closer Look:

The packaging on the PRC-1000W is quite conservative but is filled with all of the information that you would ever want to know about this power supply.  High definition graphics on a black background and the sheer weight of the package are very appealing qualities.  They definitely made me take a second look.

Inside the box I found it hard to believe you could cram so much into such a small space.  A multitude of cables with different connector configurations, adapters, Velcro cable ties, zip ties, an instruction manual, and of course the power supply are all the items that I found inside.

The adapters that are supplied are used to convert a SATA cable to a molex connector.  However, there are two molex / floppy drive cables supplied, each with three molex connectors.

Closer Look Continued:

I was amazed at the finish on the Precise 1000W.  The color is called titanium black with a highly polished surface.  It’s a shame something so cool looking will almost never be seen by anyone else.  It looks nice on the outside, I wonder about inside.



As with most computer components, it is OCC’s suggestion and my suggestion that you read all instructions carefully and pay special attention to the warning labels about shock hazards and other associated risks.  Removing the lid on this power supply does void the warranty and is potentially dangerous, so let me do that for you so you don’t have to. 

As you can see, there are two fairly large heatsinks that should do well in dissipating the heat created by the SCR’s.  The cooling fan is a 120mm fan rated at 88.2 CFM @ 2850 RPM with a noise rating of 40 dBA.

Even though I don’t really want to hide it inside the case, next we’ll look at the installation of this PSU.


The installation of the power supply unit is fairly straight forward depending on the system components you have.  Just insert the PSU into the power supply bay in your case and secure it with the 6-32 screws supplied.

Then just start plugging in the components that you have on your system.  With my system, I started with the ATX cable.  As with all of the cables that you connect, make sure that the connector snaps into place before you consider it connected.

Next, I plugged in the RAID array with one of the supplied SATA cables.

Then I connected the dual 12VDC PCI Express VGA connectors to my video card.

Finally I installed the single molex to my DVD-ROM and the installation is complete.  Before I start using the system, I will do a double check on the supplied power coming from each rail in the testing section.


Wattage   +3.3V +5V +12V1 +12V2 +12V3 +12V4 +12V6 -12V +5Vsb
850W Maximum 28A 28A 20A 20A 20A 20A 20A 0.8A 6A
  Minimum 0.3A 0.3A 0.5A 0.5A 0.5A 0.5A 0.5A 0.1A 0.1A
  Combined Watts 180W 900W(75A) 9.6W 30W
  Total Watts 1000W

Cables and Connections:

12V-8Pin Yes
12V-4Pin Yes
PCI Express VGA 6pin 4
SATA Power Load 12
Floppy Disk Connector 2
Molex 6
SATA to Molex 4



Test Setup:

For testing I will check the voltage on all 12.0VDC rails as well as the 5.0 and 3.3 VDC output points.  As you can see, the voltage for all of the points is consistently within a very tight tolerance of +/-3%.  It’s always good to see a slightly higher voltage than a lower one, as when a substantial load is put on the system, the voltage can sag.  However, with voltage regulation as tight as it is, coupled with the rated 1000W power, I don’t think sag will be a concern.

At zero load I compared the output voltages of the Precise 1000W to the output voltages of the OCZ  GamerXstream 600W PSU.  The results are listed below.

As you can see, there is not much difference in the voltages as voltage regulation in today’s electronics has reached such high levels of accuracy.  The real difference is in the actual capacity.  Next we'll test both while at full load.

Testing Continued:

Now we'll test the voltage while the system is under load.  The test setup is exactly the same as the test at idle, except that I will run one instance of Orthos Version 0.41 set at small FFT's to stress the CPU, and simultaneously run 3DMark06 to stress the 12VDC video card.


In the charts below, as in the zero load charts, I've plotted the results for the Precise 1000W and the results for the OCZ GamerXstream.

The results here show that the voltage regulation for the Precise 1000W is extremely good.  The difference between load and zero load is so small it can't be seen on our graphs, so I've put them on a chart for illustration.  The variation from zero load to load on all voltages is as follows:

Voltage % Variation
3.3VDC 0.38%
5.0VDC 0.59%
12.0VDC 0.33%

With this kind of stability, this PSU should be able to supply all that the hard core systems will demand.



NZXT has come a long way in a very short period of time.  The products that it has been putting out have proven to be not only popular but also very well built.  In the case of the Precise 1000W power supply, I am amazed at the quality of workmanship and the aesthetics.  The exterior finish leaves nothing to be desired and also leaves a lasting impression.  The modular cable design is definitely the way of the future and NZXT has done a great job implementing it into this PSU’s design.  I am sure the Precise 1000W will withstand the demands of any of today’s power hungry components.  As well, it is sized to accommodate anything that the future may have to throw at it.