InWin P130II

Introduction

Thus far in our ongoing look at the first generation of ATX 3.0 power supplies, we've seen a lot of high-end units. Today we have yet another ATX 3.0 PSU for review from the fine folks at InWin. InWin has sent over the P130II Platinum ATX 3.0 PSU, which seems that all of InWin's latest ATX 3.0 PSUs are sporting a 80 Plus Platinum certification. The InWin PII Series features Zero Fan mode which can be activated via the conveniently placed switch at the rear of the PSU beside the power switch.

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The InWin P130II packs super flexible black flat cabling that is 100% modular, a compact design, running with all Japanese electrolytic capacitors. The 1300W model includes two cables (600W+600W), ready for 30 and 40-Series NVIDIA RTX and A-Series graphics cards. The PII Series includes a full suite of safety certifications and protection functions that include OCP, OVP, UVP, SCP, OTP, and OPP.

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Packaging & Contents

The InWin P130II packaging and color choice match the overall premium theme of the PSU itself. The box is glossy with black and silver accents, which coincide with several areas color theme you see on the PSU in the image, and we will see on the PSU itself in this review. The box is straightforward, with four key feature icons across the bottom. One of the standouts which break the square aesthetic is the 10-year warranty icon. This duration is standard in the PSU scene, especially in the high-end categories.

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Flipping to the rear of the package and we see seven feature icons. These are representative of the critical features I listed on the first section of this review. At the rear InWin gives information showing the power specifications table and the specifications table.

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Turning to the side of the package, we find one sticker listing the serial number.

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Turning to the opposing side and we see a InWin logo and product name.

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The InWin P130II Platinum 1300W's retail packaging can be opened by a flap attached at the bottom. Upon opening the box, you will find everything neatly organized.

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The power supply is located on the left sandwiched between two Styrofoam brackets, cables on the right, and everything else in a resealable plastic bag.

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In the box are four mounting screws and some zip ties.

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Here is all the cabling lined up. A total of twelve modular cables are included out of the box. InWin has chosen not to sleeve any cables but does make it known that the flat black cabling is very flexible.
The following modular cables are included out of the box:

- 1x ATX 20+4 pin, 60.0cm
- 2x ATX/EPS 4+4 pin, 70cm
- 2x 12VHPWR PCIe 12+4 pin, 50cm
- 3x PCIe 6+2 pin, 2 connectors each, 60cm to first connector, 150cm spacing thereafter
- 3x SATA, 4 connectors each, 50cm to first connector, 15cm spacing thereafter
- 1x Molex/Floppy, 4 connectors each, 50cm to first connector, 15cm spacing thereafter.

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I am surprised they still include a floppy power connector, since it cannot think of a single device in more than a decade that still uses it. That aside, these are specified measurements from the manufacturer. Most users should have no problems with InWin's P130II Platinum 1300W in modern cases. 50cm is the general standard, but the peripheral cables with a shorter length to the first connector may be advantageous for cable routing and management.

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16 AWG wires are found on the ATX 20+4-pin, ATX/EPS 4+4-pin, and 12VHPWR cables. Everything else is 18 AWG. Manufacturers often will fatten high current cables to 16 AWG, so this is common practice.

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A Closer Look

InWin's power supplies are typically conservative and understated in appearance, and the P130II Platinum 1300W is no exception. The latest 1300W model in the Platinum lineup has a depth of only 15cm. This is one of the shortest kilowatt-spec unit we have ever reviewed here. With a power density of 720W per liter, this is impressive for a fully modular Platinum-grade PSU. 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 section. For most ATX or eATX chassis, this length should not be too much of a problem. However, if you have a mATX or mITX case that takes standard power supplies, the shorter length will definitely serve as an advantage, especially considering the fact the P130II Platinum is fully modular. The external build quality of P130II Platinum 1300W 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 right up there with all the other high-quality PSUs I have used in the past. Meanwhile, four hex screws secure the power supply case together. One screw has a seal over it that says "Warrany void if tampered opened or removed". If you try this at home, do not come after me if your warranty claim gets denied, haha. As aforementioned, we will crack open the power supply to see what components are inside in the following section.

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Its SECC construction comes with a fixed grille guarding the primary and only cooling fan installed. The 135mm fan generates airflow by drawing air from the bottom of the power supply over its internal components to keep the temperatures in check. Exhaust heat is allowed to leave at the back of the power supply through the large secondary honeycomb mesh opening. From our view above, InWin's logo is located dead center on the integrated fan grille, which has a unique pattern itself and is also placed in the middle of the enclosure.

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The sticker with the same design is implemented on both the left and right side, where you can spot PSU's name, the ATX 3.0 name, and a 1300W prominently placed. Like the front of the box, the sticker has the same wildly inconsistent and interesting font selection. To make sure you will see the text 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.

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The voltage specification label is located on the top panel of the InWin P130II Platinum 1300W. There are two main virtual rails. Up to 24A can be delivered via the +3.3V rail for a total of 79.2W, while the 24A on the +5V rail brings the output to 120W in this area. The total combined output for the +3.3V and +5V rail is 120W. 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 108.3A -- 1300W -- to maximize power delivery flexibility compared to multiple rails. Overall, the combined power output for the whole InWin P130II is 1300W, as its name suggests. It does sound a bit confusing to understand how this works at first, but generally speaking, this configuration allows sufficiently flexible power demands and should be sufficient to accommodate most users. I have seen the similar power output in the +3.3V and 5V rails for lower rated units, but the overall distribution is still reasonable for a 1300W power supply.

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At the back part of the power supply, we have the same familiar honeycomb mesh design as most PSUs with a bottom mounted fan. What you will find here is a vertically aligned male connector for power input on the western edge along with an on/off switch and another rocker switch to toggle semi-fanless mode under it. As with all active PFC power supplies, the InWin P130II Platinum 1300W has an automatic full range 100V to 240V AC line voltage selection, so the user does not have to worry about manually selecting input voltage.

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I find having the Zero fan toggle switch here to be convenient, since some older power supplies have it on the inside rather than the outside. However, I do not see a reason why you will disable semi-fanless operation. Semi-fanless mode keeps the fan off until it exceeds about 20% of the load threshold, or 260W. 260W seems to be a pretty low number in 2023, considering there are models that can do over 500W with the fan off. Disabling semi-fanless mode ensures the fan stays on at all times, but the InWin P130II Platinum 1300W is intelligently designed to keep it from overheating regardless of what the active setting is. 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. It is implemented in an efficient manner, as the power input block takes up only the minimum necessary amount of room physically required.

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The 135 mm FDB fan features a passive ‘zero fan’ mode that operates when the system load is below 20% and can easily be enabled by a switch on the rear of the PSU unit. Intelligent temperature measurement and fan speed control ensure an optimal balance between noise and cooling for safe operation. When the PC system power load rises up to 50%, the PSU still operates silently under 25 dBA.

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Like many power supplies we cover here, the InWin P130II Platinum 1300W is a fully modular power supply. This means all cables are completely detachable from the main unit. While it is somewhat questionable with regards to why this is necessary for other manufacturers, since cables such as the ATX 24-pin and ATX 4-pin/EPS 8-pin have practically an 100% chance of being connected at all times, InWin actually has a case to argue for this design choice. With fully detachable cables, it may prove to be beneficial to an extent when building your computer initially. The rear cable connection panel is done nicely. InWin has made the labels correct side up in standard orientation. Similar connectors are grouped together and are laid out in a very logical manner. To ensure you know what is going on, they are all grouped and clearly labeled for minimal ambiguity. Starting from the left, we have two 16-pin 12VHPWR PCIe 5.0 headers. Next, there are three 8-pin connectors for EPS or PCIe cables. Under them we have the CPU pin connectors and the Motherboard section that supports an ATX 24-pin connector by two separate blocks next to each other. Incompatible outputs will not physically fit into each other, so InWin has done a great job in this regard. This generous array of available connectors should be more than sufficient for casual users and enthusiasts alike.

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A Closer Look Inside

As always, we opened up our InWin P130II Platinum 1300W power supply to take a detailed look at what is going on inside. Please note that doing this at home will likely void your 10-year warranty, as one screw has a seal over it that says "Warrany void if tampered opened or removed" as mentioned on the previous page. For the benefit of you, we cracked ours open, so you do not need to. There are no user serviceable parts inside.

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Disassembling the InWin P130II is quite straightforward with the removal of four to eleven screws, depending on how far you want to get. Our photo below shows an overhead view of its internal components. Its OEM is Sirfa/High Power, which is a decent manufacturer. It features an LLC half bridge topology with DC-to-DC converters. At first glance, the build quality appears to be excellent. There are five main heatsinks inside. Three larger ones painted black are located on the primary side, while two smaller sized unpainted heatsinks reside on the secondary side.

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Pulling the enclosure apart and we got straight to the internal inspection. The transient filter stage is the first input stage of a computer power supply, so we will take a look at that first. InWin has always done a great job in the past to make sure their power supplies met or exceeded the recommended requirements, and the InWin P130II is no exception. The InWin P130II has one metal oxide varistor, two metalized polyester X-capacitors, four ceramic Y-capacitors, and two common mode chokes. This is two times the amount of X and Y capacitors than recommended. Considering some PSUs have missing MOVs, I am happy to see it here as this component is used to stabilize spikes from the AC line.

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The active PFC circuit featured on the InWin P130II Platinum 1300W uses two Yueqing Kanghong Electronic PBJ2506L bridge rectifiers on both sides of the black heatsink closest to the transient filter stage. At 115V, the maximum rectified forward current capacity with heatsink is 25A each, so you can theoretically pull up to 5750W (25A * 2 diodes * 115V) from the bridge rectifier at 100% efficiency. Of course, this is limited by the fact that it is not 100% efficient and also neglects the fact that not every component in the system is able to keep up. Further down the line, we can see two Infineon IPA60R060P7 power MOSFETs for the active PFC circuit- both on the same side of the heatsink between the bulk capacitors and the transformer. Each is rated for up to 30A at 100c. These transistors present a maximum resistance of 60 mΩ and typical resistance of 49 mΩ when turned on according to the manufacturer's data sheet. This on characteristic is called Static Drain-Source On-Resistance, or commonly abbreviated as RDS(on). The more efficient the component is, the lower the RDS(on) value, since it wastes less power with lower resistance.

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On the primary side, we can see two Japanese-made Rubycon capacitors. 100% Japanese-made capacitors are specified on the marketing material, so this is to be expected. Our 1300W version of InWin's P130II power supply incorporates two 680µF x 420V capacitors in parallel for an equivalent capacitance of 1360µF x 420V. It is rated at 105c, whereas more value-oriented power supplies usually use 85c rated capacitors. On the largest black painted heatsink shown in the above photo, there is one Toshiba TRS12E65F silicon carbide Schottky diode as the APFC boost diode attached to it. Meanwhile, on the same heatsink, there are two Infineon IPA60R060P7 power MOSFETs power transistors placed. Each is certified for up to 30A at 100c. These transistors present a maximum resistance of 60 mΩ and typical resistance of 49 mΩ when turned on according to the manufacturer's data sheet. Champion's CU6901VAC is the switching controller, located on a vertical add-in board close to one of the silver heatsinks. An Infineon ICE3PCS01G is part of the APFC controller circuit, located on another vertical PCB close to the bulk capacitors.

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On the secondary side, we can see more Japanese-made electrolytic capacitors from Nippon Chemi-Con and Rubycon rated at 105c. As with modern high efficiency power supplies, all rectifiers produce the +12V out, while the +5V and +3.3V outputs are generated from the +12V output using a DC-to-DC converter within the power supply unit. Eight Infineon BSC0906NS MOSFETs on an add-in board parallel to the rear modular cable daughterboard generate the +5V and +3.3V output from the +12V rail. The BSC0906NS's rated continuous drain current is 40A at 100c. It has an RDS(on) value of 4.5 mΩ maximum and 3.8 mΩ typical. On the same PCB, we can find an ANPEC APW7159C, which is the PWM switching controller.

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Eight Infineon BSC010N04LS MOSFETs are responsible for generating the +12V output, located at the back of the PCB, as shown. The BSC010N04LS's rated continuous drain current is 178A at 100c. It has an RDS(on) value of 1.0 mΩ maximum and 1.0 mΩ typical. Also found on the back is a Weltrend WT7527RA monitoring IC that provides over current and over/under voltage protection. The datasheets for all components mentioned in this review can be found on their respective manufacturers' websites.

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At the back, we have a large daughterboard covering the majority of the rear panel for the modular cable sockets. All modular sockets at the bottom are soldered directly to the main PCB after the secondary stage. Pin headers join the mainboard and daughterboard to reduce power transmission loss. The output connector configuration can be seen on the previous page. Overall, the internal build quality of InWin's P130II Platinum 1300W power supply is excellent -- something we would expect from a Sirfa/High Power-built unit. Components are arranged very well for optimal cooling with minimal wires running around inside, and solder points on its black PCB is quite clean in general. I would say the InWin P130II Platinum 1300W is generally very good with regards to the selection of components used under the hood.

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Lastly, we see a 135mm fan that provides cooling to the InWin P130II Platinum 1300W's internal components.The fan model is Globe Fan RL4Z B1352512EH, as shown in our photo below. The Globe Fan RL4Z B1352512EH is a fluid dynamic bearing fan specified at 0.50A for a maximum speed of 2100 RPM and 3.77 mmH2O air pressure. The fan is not supposed to activate until the PSU is loaded to approximately 260W with semi-fanless mode active. As such, it should remain off for the most part, and even when it is on, the fan speed will vary with load. It uses double ball-bearings, which are tolerant to heat. Fans with fluid dynamic bearings generally have much longer lifespans compared to sleeve bearing fans and is quite suitable for this application.

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Instrumentation used


Below we report the instrumentation used in the test phase for the InWin P130II.

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PowerKiller 2.0. Test bench designed for power supplies up to 2185W.
Stingray DS1M12 USB Oscilloscope
PCE-PA 6000 Wattmeter
Range 1W ~ 6kW
Accuracy ± 1.5%
Multimeters
3 x HT81
1 x ABB Metrawatt M2004
1 x Eldes ELD9102
1 x Kyoritsu Kew Model 2001
1 x EDI T053
Scythe Kama Wireless Thermometer
Center 325 sound level meter


Voltage Regulation

The voltage regulation tests are carried out by connecting all the electrical lines to our PowerKiller, simulating the behavior of the power supply with loads comparable to those of a real workstation.

Line +3,3V

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Average Voltage 3,303 volt
Deviation from the ideal value (3,33 volt) = -0,80%

Line +5V

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Average Voltage 4,990 volt
Deviation from the ideal value (5,0 volt) = -0,20%

Line +12V

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Average Voltage 12,055 volt
Deviation from the ideal value (12,0 volt) = +0,45%

The deviation from the ideal value of the average voltage is extremely small on all lines of interest. This test also confirms the great work done by InWin in designing the InWin P130II .There are no doubts about the robustness of the electronics.


Efficiency

The efficiency achieved by the InWin P130II confirms the well-deserved 80plus Platinum certification. At the point of maximum efficiency (650W) just 43W will be wasted.

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Ripple

With this being a high-performance power supply, providing 1300 watts of power, it was hard to know exactly what to expect from the ripple results. In the past, we have often seen higher wattage supplies provide more inconsistent results, but that can vary. In terms of the results for the InWin P130II, the ripple results are very good.

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The 3.3 and 5v results are remarkable low throughout all the power tests. While the 12v is a little more excitable at the 20% mark it’s still massively within the acceptable limits (which are allowed to go as high as 50 by EU standards).


Cross Load

Line +3,3V.

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Maximum Vdrop 0,11 volt (3,24%).

Line +5V.

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Maximum Vdrop 0,13 volt (2,55%).

Line +12V.

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Maximum Vdrop 0,18 volt (1,48%).

This test session, which aims to verify the stability of the voltage supplied on the individual lines, is archived with excellent results for an power supply of over 1kW. The 12V line has a voltage drop of just 180mV over a range of 1300W. Lower voltages behave similarly with deviations of less than 130mV. For the latter the deviation in percentage terms exceeds the old excellence threshold of 2%, but does not take anything away from the excellent work done by InWin in designing the P130II.


APFC & OverLoad

The power factor control system (APFC) performs its task very well, managing to achieve 0.99 already at 75% of the maximum load.

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With the arrival on the market of GeForce RTX 40 video cards and their connectors, we have decided to add a new test, with which we will verify the capabilities of the 12VHPWR cable.

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The Vdrop detected on the 12VHPWR connector is among the lowest seen so far, with just 120mV within specifications. All we have to do is move on to the overload test to verify the effectiveness of the protection systems.

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The power supply is capable of supporting extremely significant power peaks on the 12V line, as required by the ATX 3.0 standard. However, the protection systems intervene promptly if the minor lines are overloaded or if the overload on the main line continues excessively. Even under heavy overload, the output voltages remained at excellent values with an efficiency close to 90%. We have in fact detected a power absorbed by the electricity network of 2026W. As always, we reiterate that the overload test is carried out by us for the sole purpose of ascertaining the quality of the internal circuitry and protection systems, which is why we recommend choosing the power supply based on the real needs of your station without relying to its ability to work off specification.


Temperature

The cooling fan's speed (RPMs) and the delta difference between input and output temperature are illustrated in the following chart. The following results were obtained at 39°C-47°C ambient.

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The large fan works well to expel heat out the rear of the chassis. The overall results are very good indeed.


Noise

The fan profile is quite relaxed at even over 40°C ambient, but the fan is a speed and noise demon, especially at higher RPMs, yet you can't expect a 1.3 kW unit to be quiet once stressed. Its efficiency would have to be 99% to do so, and we have a very long road ahead of us until we reach that point.

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Final Thoughts

The InWin P130II Platinum 1300W is a shockingly compact fully modular ATX PSU at only 150cm long, which is about the same size as an average power supply half the wattage rating or less. Impressively, this compact size does not come at the expense of quality or features either. The Sirfa/High Power-built P130II is 80 Platinum certified and delivers solid power output performance. At the same time, it is ATX 3.0 compliant and PCIe 5.0 compatible to run all your latest components. Inside, we see a good selection of components with 100% Japanese-made capacitors. Of course, there are a couple of compromises. The semi-fanless operation is good only up to 20% or 260W, which is relatively low by 2023 standards. The 135mm fan is also quite aggressive in its fan profile, so you will be able to hear it as the load increases. The electrical performances are excellent and guaranteed by robust electronics: the power supply, as required by the ATX 3.0 standard, is able to sustain power peaks above 2kW with voltage values that always remain within the pre-set limits. The degree of cleanliness of the output voltages is of an excellent level. Leaving aside considerations on the possible desirability/usefulness of a 1300W, it is undeniable that InWin has churned out a new milestone in the sector.

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We conclude with the selling price of around €210 which, we believe is fully justified by the ten-year warranty and the unique characteristics of this powerful power supply. The InWin P130II Platinum 1300W puts out solid numbers without missing a beat in stability and performance while maintaining a compact design. This power supply has been designed with one specific type of consumer in mind. Specifically, those who are looking for high-end and high-performance components for their system.

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