W1zzard
12-27-2007, 12:55 PM
[PAGE=Introduction & Packaging]
Introduction
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/logo.jpg
I would like to thank Xigmatek (http://www.xigmatel.com) for supplying the test sample.
Specifications from manufacturer
Multiple +12V Output
High Efficiency (up to 80%)
Active Power Factor Correction (0.99 PFC)
Double Forward Circuit Design
Universal AC Input(Full Range)
Smart and Silent Fan Control
13.5(14)cm Cooling Fan
PCI-Express Connector
Patented Easy Swap Connector
Cable Management Swap Connector
PC Power Supply Design Guide ATX / BTX / EPS.
Multiple Platforms
Output Protection
Completed protection OVP / OCP / OPP / UVP / SCP / OTP.
Mesh Sleeve Cable Design
Honey Comb Structure
Japan Electric Capacity
Packaging
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/package1_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/package1.jpg) http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/package2_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/package2.jpg)
The Xigmatek package design is very interesting. It mimics a textile packaging even though it is just cardboard. A carrying handle allows easy carrying of the item. On the back you have some basic specifications but since the same package is used for a number of PSUs of different wattage, the information is a bit limited.
Box contents:
Power supply unit
Power Cord
Instruction Manual
Cables
Zip ties, screws
Transportation bag for cables
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/contents_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/contents.jpg)
<table class="resulttable" border="1" cellspacing="0" cellpadding="5">
<tr>
<th rowspan="2">Connectors</th>
<th align="center">Main Power</th>
<th align="center">5.25"</th>
<th align="center">Floppy</th>
<th align="center">4 Pin CPU</th>
<th align="center">SerialATA</th>
<th align="center">PCI-E Aux Power</th>
</tr>
<tr>
<td align="center">ATX 20+4 Pin</td>
<td align="center">7</td>
<td align="center">1</td>
<td align="center">2 + 1</td>
<td align="center">6</td>
<td align="center">2x 6 + 2x 6+2</td>
</tr>
</table>
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/cablelength.gif
[page=The PSU]
The PSU
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/psu2_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/psu2.jpg)
The back of the PSU has a mains power plug and a power switch. The unit auto senses the supplied voltage, so a 110V/220V switch is not needed.
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/psu3_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/psu3.jpg) http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/psu1_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/psu1.jpg)
On one side we can see more textile design. This sticker is made from plastic but features a high-quality print that looks like leather when viewed through a case window. I have never seen such a design before and it will certainly draw attention of unknowing viewers at a LAN party.
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/psu4_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/psu4.jpg)
The modular concept is well though out. The important connectors like ATX power, CPU power and two PCI-E VGA connectors are fixed to the PSU, all other connectors are optional. This gives you optimum power delivery in the fixed cables and convenience on the other ones.
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/psu5_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/psu5.jpg)
The 140mm fan dominates the top of the unit.
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/atx1_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/atx1.jpg) http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/atx2_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/atx2.jpg)
The motherboard connector supports both 20 and 24 pin operation. You can clip the two parts together for easy installation in small or crowded cases.
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/pcie_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/pcie.jpg)
The PCI-Express power connectors can either be used a 6 pin or 8 pin variant.
[pagE=PSU Inside & Test Equipment]
PSU Inside
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/warranty_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/warranty.jpg)
A little sticker covers one of the screws required to open the PSU case. If it is damaged, Xigmatek will not RMA your PSU in case of a defect.
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/inside1_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/inside1.jpg) http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/inside2_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/inside2.jpg) http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/inside3_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/inside3.jpg) http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/inside4_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/inside4.jpg)
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/fan_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/fan.jpg)
Test Equipment
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/setup.jpg
The PSU is connected to an APC SmartUPS which supplies clean 220V input.
AC current is measured using a Peaktech 4010 desktop RS232 multimeter with 0.02A accuracy.
To measure DC output voltages of the PSU we use a Keithley 2700 6.5 digit data acquisition system. All three input voltages are measured at the same time using a solid state switching system.
Power Factor is measured using a generic Power Efficiency Meter.
Measurements for Ripple Voltage were obtained using a 100 MHz Tektronix TDS224 Digital Storage Oscilloscope.
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/noisetest_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/noisetest.jpg)
Fan noise measurements are performed with an IEC Type 2 Sound level meter and this setup.
It consists of three high-power resistors and a Socket A motherboard. The motherboard creates a small load which makes sure the PSU turns on (some PSUs require a minimum load). Since there is no hardware installed in the motherboard, its power draw is negligible. The three resistors create a static load of 320W (120W @ 12V + 50W @ 5V + 150W @ 12V) - a typical high-performance system. This setup is also used to determine the power conversion efficiency of the PSU.
[page=Performance]
Performance
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/sticker_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/sticker.jpg)
The UL number E161451 reveals that the PSU is made by OEM manufacturer Channel Well Technology for Xigmatek.
<table class="resulttable" border="1" cellspacing="0" cellpadding="5">
<tr>
<th colspan="10">Xigmatek NRP-MC851</th>
</tr>
<tr>
<th>AC Input</th>
<td colspan="9">100V-240V, 5A-10A, 50-60 Hz</td>
</tr>
<tr>
<th>DC Voltage</th>
<td align="center">+3.3V</td>
<td align="center">+5V</td>
<td align="center">+12V1</td>
<td align="center">+12V2</td>
<td align="center">+12V3</td>
<td align="center">+12V4</td>
<td align="center">+5VSB</td>
</tr>
<tr>
<th rowspan="3">Max. Output </th>
<td align="center">30A</td>
<td align="center">30A</td>
<td align="center">18A</td>
<td align="center">18A</td>
<td align="center">30A</td>
<td align="center">30A</td>
<td align="center">3A</td>
</tr>
<tr>
<td colspan="2" align="center">180</td>
<td colspan="4" align="center">744W</td>
<td align="center">15W</td>
</tr>
<tr>
<td colspan="7" align="center">850W</td>
</tr>
</table>
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/psugraph.gif
Tested on: AMD Athlon64 FX-62 @ 2800 MHz, ABIT AT8, 2x 512 MB DDR400, WD Raptor 36 GB, Radeon X1900 XTX + Radeon X1900 XTX Crossfire
The 12V and the 5V lines are very stable, on the 3.3V line we can see some bigger fluctuations. The default voltage level of the 3.3V line seems a bit low with around 3.23V, but these are manufacturing variances.
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/ripple.jpg
The ripple voltage looks good as well, with an amplitude of 16 mV from top to bottom.
<table class="resulttable" border="1" cellspacing="0" cellpadding="5">
<tr>
<th>Standard deviation 12V</th>
<td align="right">5.06</td>
</tr>
<tr>
<th>Standard deviation 5V</th>
<td align="right">4.13</td>
</tr>
<tr>
<th>Standard deviation 3.3V</th>
<td align="right">7.60</td>
</tr>
<tr>
<th>Power Factor</th>
<td align="right">0.97</td>
</tr>
<tr>
<th>Ripple Voltage 12V</th>
<td align="right">15.8 mV</td>
</tr>
<tr>
<th>Power Efficiency @ 320 W</th>
<td align="right">85% (320W:376W)</td>
</tr>
</table>
Standard deviation is a statistical term, which tells how far away from the average the measurements are. In other words it's the average of the average.
A large standard deviation indicates that the data points are far from the average and a small standard deviation indicates that they are close within the average.
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/efficiency.gif
The efficiency rating of the Xigmatek NRP-MC851 is very impressive. It can easily take the number one spot of our test group with over 85%.
[PAGE=Fan Noise]
Fan Noise
For easier comparison of PSU fan noise results we have separated our test results into three groups with a chart each:
Up to 500W: Typical PSU ideal for a single video card system.
500W to 750W: Plenty of power available for most single and dual video card machines.
Over 750W: For the most hardcore, power hungry and overclocked setups.
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/fannoise_500.gif http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/fannoise_750.gif http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/fannoise_1000.gif
With such a high efficiency (= less heat inside the PSU) I can't understand why the fan of the NRP-MC851 is running so fast and loud. It would have been easy to start the fan extremely slow and ramp it up as power draw increases.
[page=Value & Conclusion]
Value and Conclusion
<table width="100%" cellpadding="5" cellspacing="0" id="result">
<tr><th>http://www.techpowerup.com/images/dollar.gif</th>
<td>
Xigmatek is asking around $219 for the NRP-MC851.</td>
</tr><tr>
<th>http://www.techpowerup.com/images/thumbup.gif</th>
<td>
Very stable 12V and 5V line
High efficiency
Standard sized
Modular
Cables are fully sleeved
</td>
</tr>
<tr>
<th>http://www.techpowerup.com/images/thumbdown.gif</th>
<td>
Noisy
</td></tr>
<tr><th>8.4</th>
<td>Xigmatek's new NRP-MC851 is a nice PSU in the high-end range. It can offer stable voltages and very high efficiency. But other than that I find it hard to see points where the PSU can impress. Don't get me wrong, there's nothing wrong with the unit and it is doing a fine job. But to get into a market that is dominated by much bigger companies (at least I think) you should have a product that makes people go "wow" so they are willing take the risk of trusting a less well known company.<br />
However, if Xigmatek can get down the price of their product and offer it at a range of retailers the NRP-MC851 has the potential to be a success.</td></tr>
<tr><th></th><td>http://www.techpowerup.com/images/recommended.gif</td></tr>
</table>
Introduction
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/logo.jpg
I would like to thank Xigmatek (http://www.xigmatel.com) for supplying the test sample.
Specifications from manufacturer
Multiple +12V Output
High Efficiency (up to 80%)
Active Power Factor Correction (0.99 PFC)
Double Forward Circuit Design
Universal AC Input(Full Range)
Smart and Silent Fan Control
13.5(14)cm Cooling Fan
PCI-Express Connector
Patented Easy Swap Connector
Cable Management Swap Connector
PC Power Supply Design Guide ATX / BTX / EPS.
Multiple Platforms
Output Protection
Completed protection OVP / OCP / OPP / UVP / SCP / OTP.
Mesh Sleeve Cable Design
Honey Comb Structure
Japan Electric Capacity
Packaging
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/package1_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/package1.jpg) http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/package2_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/package2.jpg)
The Xigmatek package design is very interesting. It mimics a textile packaging even though it is just cardboard. A carrying handle allows easy carrying of the item. On the back you have some basic specifications but since the same package is used for a number of PSUs of different wattage, the information is a bit limited.
Box contents:
Power supply unit
Power Cord
Instruction Manual
Cables
Zip ties, screws
Transportation bag for cables
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/contents_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/contents.jpg)
<table class="resulttable" border="1" cellspacing="0" cellpadding="5">
<tr>
<th rowspan="2">Connectors</th>
<th align="center">Main Power</th>
<th align="center">5.25"</th>
<th align="center">Floppy</th>
<th align="center">4 Pin CPU</th>
<th align="center">SerialATA</th>
<th align="center">PCI-E Aux Power</th>
</tr>
<tr>
<td align="center">ATX 20+4 Pin</td>
<td align="center">7</td>
<td align="center">1</td>
<td align="center">2 + 1</td>
<td align="center">6</td>
<td align="center">2x 6 + 2x 6+2</td>
</tr>
</table>
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/cablelength.gif
[page=The PSU]
The PSU
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/psu2_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/psu2.jpg)
The back of the PSU has a mains power plug and a power switch. The unit auto senses the supplied voltage, so a 110V/220V switch is not needed.
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/psu3_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/psu3.jpg) http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/psu1_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/psu1.jpg)
On one side we can see more textile design. This sticker is made from plastic but features a high-quality print that looks like leather when viewed through a case window. I have never seen such a design before and it will certainly draw attention of unknowing viewers at a LAN party.
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/psu4_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/psu4.jpg)
The modular concept is well though out. The important connectors like ATX power, CPU power and two PCI-E VGA connectors are fixed to the PSU, all other connectors are optional. This gives you optimum power delivery in the fixed cables and convenience on the other ones.
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/psu5_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/psu5.jpg)
The 140mm fan dominates the top of the unit.
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/atx1_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/atx1.jpg) http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/atx2_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/atx2.jpg)
The motherboard connector supports both 20 and 24 pin operation. You can clip the two parts together for easy installation in small or crowded cases.
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/pcie_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/pcie.jpg)
The PCI-Express power connectors can either be used a 6 pin or 8 pin variant.
[pagE=PSU Inside & Test Equipment]
PSU Inside
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/warranty_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/warranty.jpg)
A little sticker covers one of the screws required to open the PSU case. If it is damaged, Xigmatek will not RMA your PSU in case of a defect.
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/inside1_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/inside1.jpg) http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/inside2_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/inside2.jpg) http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/inside3_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/inside3.jpg) http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/inside4_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/inside4.jpg)
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/fan_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/fan.jpg)
Test Equipment
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/setup.jpg
The PSU is connected to an APC SmartUPS which supplies clean 220V input.
AC current is measured using a Peaktech 4010 desktop RS232 multimeter with 0.02A accuracy.
To measure DC output voltages of the PSU we use a Keithley 2700 6.5 digit data acquisition system. All three input voltages are measured at the same time using a solid state switching system.
Power Factor is measured using a generic Power Efficiency Meter.
Measurements for Ripple Voltage were obtained using a 100 MHz Tektronix TDS224 Digital Storage Oscilloscope.
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/noisetest_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/noisetest.jpg)
Fan noise measurements are performed with an IEC Type 2 Sound level meter and this setup.
It consists of three high-power resistors and a Socket A motherboard. The motherboard creates a small load which makes sure the PSU turns on (some PSUs require a minimum load). Since there is no hardware installed in the motherboard, its power draw is negligible. The three resistors create a static load of 320W (120W @ 12V + 50W @ 5V + 150W @ 12V) - a typical high-performance system. This setup is also used to determine the power conversion efficiency of the PSU.
[page=Performance]
Performance
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/sticker_small.jpg (http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/sticker.jpg)
The UL number E161451 reveals that the PSU is made by OEM manufacturer Channel Well Technology for Xigmatek.
<table class="resulttable" border="1" cellspacing="0" cellpadding="5">
<tr>
<th colspan="10">Xigmatek NRP-MC851</th>
</tr>
<tr>
<th>AC Input</th>
<td colspan="9">100V-240V, 5A-10A, 50-60 Hz</td>
</tr>
<tr>
<th>DC Voltage</th>
<td align="center">+3.3V</td>
<td align="center">+5V</td>
<td align="center">+12V1</td>
<td align="center">+12V2</td>
<td align="center">+12V3</td>
<td align="center">+12V4</td>
<td align="center">+5VSB</td>
</tr>
<tr>
<th rowspan="3">Max. Output </th>
<td align="center">30A</td>
<td align="center">30A</td>
<td align="center">18A</td>
<td align="center">18A</td>
<td align="center">30A</td>
<td align="center">30A</td>
<td align="center">3A</td>
</tr>
<tr>
<td colspan="2" align="center">180</td>
<td colspan="4" align="center">744W</td>
<td align="center">15W</td>
</tr>
<tr>
<td colspan="7" align="center">850W</td>
</tr>
</table>
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/psugraph.gif
Tested on: AMD Athlon64 FX-62 @ 2800 MHz, ABIT AT8, 2x 512 MB DDR400, WD Raptor 36 GB, Radeon X1900 XTX + Radeon X1900 XTX Crossfire
The 12V and the 5V lines are very stable, on the 3.3V line we can see some bigger fluctuations. The default voltage level of the 3.3V line seems a bit low with around 3.23V, but these are manufacturing variances.
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/ripple.jpg
The ripple voltage looks good as well, with an amplitude of 16 mV from top to bottom.
<table class="resulttable" border="1" cellspacing="0" cellpadding="5">
<tr>
<th>Standard deviation 12V</th>
<td align="right">5.06</td>
</tr>
<tr>
<th>Standard deviation 5V</th>
<td align="right">4.13</td>
</tr>
<tr>
<th>Standard deviation 3.3V</th>
<td align="right">7.60</td>
</tr>
<tr>
<th>Power Factor</th>
<td align="right">0.97</td>
</tr>
<tr>
<th>Ripple Voltage 12V</th>
<td align="right">15.8 mV</td>
</tr>
<tr>
<th>Power Efficiency @ 320 W</th>
<td align="right">85% (320W:376W)</td>
</tr>
</table>
Standard deviation is a statistical term, which tells how far away from the average the measurements are. In other words it's the average of the average.
A large standard deviation indicates that the data points are far from the average and a small standard deviation indicates that they are close within the average.
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/efficiency.gif
The efficiency rating of the Xigmatek NRP-MC851 is very impressive. It can easily take the number one spot of our test group with over 85%.
[PAGE=Fan Noise]
Fan Noise
For easier comparison of PSU fan noise results we have separated our test results into three groups with a chart each:
Up to 500W: Typical PSU ideal for a single video card system.
500W to 750W: Plenty of power available for most single and dual video card machines.
Over 750W: For the most hardcore, power hungry and overclocked setups.
http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/fannoise_500.gif http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/fannoise_750.gif http://www.techpowerup.com/reviews/Xigmatek/NRP-MC851/images/fannoise_1000.gif
With such a high efficiency (= less heat inside the PSU) I can't understand why the fan of the NRP-MC851 is running so fast and loud. It would have been easy to start the fan extremely slow and ramp it up as power draw increases.
[page=Value & Conclusion]
Value and Conclusion
<table width="100%" cellpadding="5" cellspacing="0" id="result">
<tr><th>http://www.techpowerup.com/images/dollar.gif</th>
<td>
Xigmatek is asking around $219 for the NRP-MC851.</td>
</tr><tr>
<th>http://www.techpowerup.com/images/thumbup.gif</th>
<td>
Very stable 12V and 5V line
High efficiency
Standard sized
Modular
Cables are fully sleeved
</td>
</tr>
<tr>
<th>http://www.techpowerup.com/images/thumbdown.gif</th>
<td>
Noisy
</td></tr>
<tr><th>8.4</th>
<td>Xigmatek's new NRP-MC851 is a nice PSU in the high-end range. It can offer stable voltages and very high efficiency. But other than that I find it hard to see points where the PSU can impress. Don't get me wrong, there's nothing wrong with the unit and it is doing a fine job. But to get into a market that is dominated by much bigger companies (at least I think) you should have a product that makes people go "wow" so they are willing take the risk of trusting a less well known company.<br />
However, if Xigmatek can get down the price of their product and offer it at a range of retailers the NRP-MC851 has the potential to be a success.</td></tr>
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