Superflower Leadex V Platinum Pro 1000W Review


“Oh god this thing is cute!” Luke said while opening the box. At just 130mm depth, the Superflower Leadex V Pro is the second smallest unit I’ve had in my hands of this wattage, only behind the Silverstone SX1000. There definitely is something unreal about this small of a box holding this much power, but… how does it hold up? Let’s dive into the spiritual successor to the original Leadex platinum.

General Specifications

ModelLeadex V Platinum Pro
Introduction year2021
Warranty10 years

Power Specifications



Cable typeCable QuantityConnector Per CableGauge
ATX 24 pin1116-20AWG
EPS 4+4 pin2118AWG
PCIe Power 6+2 pin4218-20AWG
SATA Power2418AWG
SATA Power2218AWG
Peripheral 4 pin1418AWG

The Leadex V pro features Superflower’s patented “Super connector”. This is a universal 9-pin connector that’s used for everything but the motherboard connectors. This allows you to plug in the EPS, PCIe, SATA and peripheral connectors wherever you want in the unit. How useful this is in practice is subjective, but it’s definitely worth mentioning.


The back is full of… Yes please! Hexagons! I swear this is becoming an obsession at this point. Outside of a few closed spots for the power plug, power switch and semi-passive or “eco” switch, the unit is full of hexagon shaped cutouts at the back. This definitely looks like one of the most open designs I’ve seen, but this is likely required to achieve the compact dimensions of the unit.

Behind the silver grill, we find a 120mm that’s almost as big as the unit itself. This grill has the Superflower logo edged in, the only place you’ll find it on the unit itself.

On the front we see the earlier mentioned universal connectors, as well as two connectors for the motherboard cables. There’s a lot of plugs close together with three rows instead of the generally used 1-2 rows.

And again, as something that should just be a minor note, the unit uses hex screws… making my job ever so slightly easier. This isn’t the case for the internal PCB, but here Superflower is required to use Phillips heads by law either way.


This was… a bit tough and did require a few guesses here and there. While the fan controller and DC-DC controllers are known, the LLC resonant controller and APFC controllers are custom controllers that are by my own guesses made by Texas Intruments and Richtek and the only other IC related to it is an On-Semi/Texas Intruments op-amp I was… lost in this regard. While the review from Aris did show the protection circuit working, I won’t be making any kind of table here, nor will I speculate anything beyond what I can actually confirm.

Parts Breakdown+Internal

PlatformLeadex V Platinum Pro
Input Voltage100-240V
Primary ConverterAPFC Half
RectifierSynchronous Rectification
FanGlobe Fan S1192312MP-4M
BearingFluid Dynamic Bearing
PCB TypeDouble Sided
Bulk Capacitor(s)1x Nippon Chemicon KMW (400v, 560uf, 105c), 1x Rubycon UFM (400v, 380 uf, 105c)
Bridge Rectifiers1x Unknown
APFC MOSFETs3x Infineon IPA50R140CP (500V, 15A @ 100c), 1x Syncpower SPN5003 (500v, 20ma @ 70c)
APFC Boost Diode1x CREE (Unknown)
APFC Controller1x Superflower SF29603, 1x Superflower S9602
LLC Resonant ControllerSuperflower AA9013
Main Switches2x Infineon IPB60R099CP (600V, 19A @ 100c)
12v MOSFETs6x Infineon BSC027N04LS (40V, 88A @ 100c)
DC-DC Converters8x Alpha & Omega AON6516 (30V, 25A @ 100c)
DC-DC Controller2x On Semi NCP1587A
Supervisor ICUnknown
Op-AmpON-semi LM324ADG
Fan controllerSTMicro STM8S003F3
Standby PWM ControllerSuperflower SF29604

Only four hex screws later to take off the top of the unit, we can see the beautiful compact layout Superflower created here. While the SX1000 used a dual transformer design, here we only see a single one. It’s also interesting to see parts of the PCBs on the AC daughterboard and a separate PCB instead of the main PCB, contributing to making this unit more compact.

Because of the compact layout there were a few parts I needed to either guesstimate or base off public info about the unit. A lot of the APFC is hidden behind the AC plug PCB or behind a massive coil, Superflower uses multiple ICs that have either been rebranded or made custom by/for Superflower and have no public datasheets because of it. But… let’s talk about the stuff that is visible.

Globe fan is a manufacturer often used by the likes of HEC, Highpower and many times by Superflower in the past. A similar model 140mm fan is used in the Hela 850R we reviewed a while back. The fan is noted as a fluid dynamic fan, but I didn’t open the fan up to check if this is true. Fan manufacturers are known to put multiple bearings under the same name, making it possible for this fan to also be rifle bearing. However, both would do solid in a design like this.

Outside of a few visible patch-ups done by hand, the soldering looks pretty solid overall. No major complaints here, but also probably an early production unit where more staff is on the floor to supervise.

While you’d normally see one or two of the same bulk capacitors in PSUs, Superflower went with two different capacitors, one sourced from Nippon-Chemicon and the other from Rubycon. While I don’t know why they chose for this, the unit does hold up (literally) accordingly, so it works out fine. While it would be nice to see 450V capacitors instead of 400V, there’s a massive shortage on them.

All the capacitors I could identify on the board are made by Nippon-Chemicon or Rubycon, making Superflower’s claim of “100% Japanese capacitors” accurate. However, as these are produced in China either way, this shouldn’t matter much compared to a good capacitor from a Taiwanese or Chinese brand.

The 12V MOSFETs are on a separate daughterboard instead of the regular spot of the bottom of the unit. This again is likely done to make the unit more compact. While this is usually cooled by heatsinks on top and/or a thermal pad at the bottom to use the housing for it, the Leadex V Pro relies purely on airflow to keep the FETs cool. No issues to note with this approach, but it’s definitely a new one.

Overall, Superflower’s approach to make this unit as small as it is including a few very innovative layout changes compared to traditional PSUs of this wattage. The build quality is good, the part choice (as far as it can be identified) is solid and while a few things would be possible to improve, there’s no significant issues to note.

Electrical Performance

The following results are by third party PSU lab Cybenetics. The results shown are based off the Leadex V Pro Platinum (white) published on 29-9-2022

Test Equipment

Electronic LoadsChroma 63601-5 x4
Chroma 63600-2 x2
Chroma 63640-80-80 x20
Chroma 63610-80-20 x2
AC SourcesChroma 6530
Keysight AC6804B
Power AnalyzersN4L PPA1530 x2
Sound AnalyzerBruel & Kjaer 2270 G4
MicrophoneBruel & Kjaer Type 4955-A
Data LoggersPicoscope TC-08 x2
Labjack U3-HV x2
TachometerUNI-T UT372 x2
Digital MultimeterKeysight U1273AX
Fluke 289
Keithley 2015 - THD
UPSCyberPower OLS3000E 3kVA x2
Transformer3kVA x2

Overall (115v)

Average efficiency89,703%
Efficiency at 2% load69,448%
Average efficiency 5VSB77,69%
Standby power consumption (W)0,0655
Average PF0,987
Average noise output35.63 dB(A)
Efficiency rating (ETA)Platinum
Noise rating (LAMBDA)Standard+

Overall (230v)

Average efficiency91,77%
Average efficiency 5VSB76,05%
Standby power consumption (W)0,104742
Average PF0,945
Average noise output36.00 dB(A)
Efficiency rating (ETA)Platinum
Noise rating (LAMBDA)Standard+

Efficiency (115v)

Load (115v)EfficiencyAC (Watts)DC (Watts)
20w load68,351%29,26520,003
40w load79,365%50,40140,001
60w load83,889%71,52360
80w load86,006%92,96979,959
10% load87,439%114,381100,014
20% load90,254%221,564199,971
30% load91,379%328,329300,025
40% load91,569%436,591399,783
50% load91,248%547,4499,492
60% load90,750%661,203600,042
70% load90,075%776,905699,796
80% load89,454%894,135799,843
90% load88,623%1015,124899,638
100% load87,778%1139,6631000,373
Crossload 183,434%121,418101,304
Crossload 282,801%122,459101,397
Crossload 377,503%86,95267,39
Crossload 488,798%1126,271000,106

Efficiency (230v)

Load (230v)EfficiencyAC (Watts)DC (Watts)
20w load68,656%29,54620,285
40w load79,504%50,89240,461
60w load84,553%70,96460,002
80w load87,011%91,90379,966
10% load88,062%113,58100,021
20% load91,935%217,521199,977
30% load93,019%322,553300,036
40% load93,347%428,33399,834
50% load93,294%535,441499,534
60% load92,992%645,295600,071
70% load92,615%755,641699,838
80% load92,198%867,55799,868
90% load91,753%980,506899,648
100% load91,195%1096,9761000,386
Crossload 184,330%120,137101,311
Crossload 283,692%121,158101,399
Crossload 378,241%86,13567,393
Crossload 491,985%1087,3071000,156

Voltage Regulation (115v)

Load (115v)12V (voltage)5V (voltage)3.3V (voltage)5VSB (voltage)
20w load12.165V5.041V3.322V5.076V
40w load12.164V5.041V3.322V5.072V
60w load12.163V5.04V3.321V5.069V
80w load12.162V5.04V3.32V5.064V
10% load12.161V5.039V3.318V5.051V
20% load12.157V5.038V3.316V5.039V
30% load12.155V5.037V3.315V5.027V
40% load12.155V5.035V3.313V5.016V
50% load12.156V5.034V3.311V5.004V
60% load12.158V5.033V3.308V4.991V
70% load12.159V5.032V3.306V4.978V
80% load12.161V5.03V3.303V4.967V
90% load12.161V5.029V3.301V4.957V
100% load12.156V5.027V3.3V4.948V
Crossload 112.156V5.036V3.293V5.06V
Crossload 212.159V5.029V3.321V5.07V
Crossload 312.157V5.044V3.274V5.058V
Crossload 412.161V5.031V3.322V5.024V

Voltage Regulation (230v)

Load (230v)12V (voltage)5V (voltage)3.3V (voltage)5VSB (voltage)
20w load12.164V5.041V3.322V5.076V
40w load12.163V5.04V3.321V5.072V
60w load12.162V5.04V3.321V5.067V
80w load12.161V5.039V3.32V5.063V
10% load12.160V5.039V3.318V5.051V
20% load12.156V5.037V3.315V5.039V
30% load12.153V5.036V3.314V5.027V
40% load12.154V5.035V3.313V5.015V
50% load12.155V5.034V3.31V5.003V
60% load12.157V5.033V3.307V4.991V
70% load12.158V5.031V3.305V4.977V
80% load12.159V5.03V3.302V4.967V
90% load12.161V5.028V3.3V4.957V
100% load12.155V5.027V3.299V4.948V
Crossload 112.155V5.035V3.292V5.06V
Crossload 212.158V5.028V3.321V5.07V
Crossload 312.156V5.044V3.273V5.058V
Crossload 412.160V5.031V3.322V5.023V

Ripple (115v)

10% Load5.7 mV7.2 mV7.8 mV7.2 mVPass
20% Load5.4 mV8.1 mV8.3 mV7.4 mVPass
30% Load5.7 mV8.7 mV9.5 mV8.5 mVPass
40% Load6.6 mV8.8 mV8.9 mV8.4 mVPass
50% Load7.3 mV9.8 mV11.1 mV10.2 mVPass
60% Load8.0 mV9.3 mV10.3 mV40.4 mVPass
70% Load10.7 mV13.1 mV11.7 mV42.3 mVPass
80% Load11.1 mV12.8 mV17.2 mV39.9 mVPass
90% Load11.5 mV13.3 mV18.7 mV19.0 mVPass
100% Load12.1 mV14.4 mV18.1 mV14.2 mVPass
Crossload17.9 mV10.5 mV16.2 mV42.2 mVPass
Crossload26.3 mV7.9 mV10.2 mV39.0 mVPass
Crossload37.7 mV7.8 mV15.4 mV37.6 mVPass
Crossload411.4 mV13.1 mV11.4 mV44.9 mVPass

Ripple (230v)

10% Load5.4 mV7.2 mV7.6 mV7.7 mVPass
20% Load5.8 mV7.9 mV7.8 mV7.7 mVPass
30% Load5.6 mV8.7 mV9.1 mV8.0 mVPass
40% Load6.6 mV8.8 mV8.6 mV8.0 mVPass
50% Load7.3 mV9.3 mV9.0 mV10.5 mVPass
60% Load7.6 mV9.4 mV10.1 mV9.7 mVPass
70% Load10.5 mV13.1 mV11.8 mV30.6 mVPass
80% Load10.4 mV13.1 mV16.6 mV31.2 mVPass
90% Load10.5 mV14.2 mV16.8 mV16.4 mVPass
100% Load11.7 mV15.0 mV19.9 mV11.0 mVPass
Crossload17.6 mV9.8 mV16.4 mV37.7 mVPass
Crossload26.2 mV7.8 mV10.9 mV39.2 mVPass
Crossload37.7 mV8.1 mV16.2 mV40.6 mVPass
Crossload410.6 mV13.3 mV11.4 mV44.8 mVPass

Fan Speed/Noise (115v)

Load (115v)RPMNoise (DBa)Temperature inTemperature out
20w load483<637.37°C40.8°C
40w load482<637.48°C40.96°C
60w load510<638.85°C42.62°C
80w load5417,939.26°C43.2°C
10% load61512,440.3°C44.4°C
20% load70418,441.23°C45.63°C
30% load81622,441.5°C46.25°C
40% load10022841.86°C46.89°C
50% load121433,842.96°C48.75°C
60% load138937,349.16°C43.21°C
70% load156940,350.78°C43.94°C
80% load173642,751.46°C44.22°C
90% load190544,453.59°C45.22°C
100% load207345,956.58°C46.17°C
Crossload 1120533,746.74°C41.21°C
Crossload 2100828,140.5°C48.22°C
Crossload 392125,840.73°C49.89°C
Crossload 4189644,346.85°C57.03°C

Fan Speed/Noise (230v)

Load (230v)RPMNoise (DBa)Temperature inTemperature out
20w load540<636.87°C39.95°C
40w load4907,937.42°C40.83°C
60w load5407,938.11°C41.88°C
80w load58512,439.42°C43.5°C
10% load64613,940.45°C44.7°C
20% load70118,140.7°C45.03°C
30% load81422,441.82°C46.45°C
40% load100828,142.35°C47.09°C
50% load117232,842.83°C48.03°C
60% load135036,548.56°C43.04°C
70% load152139,449.6°C43.08°C
80% load170442,150.73°C43.37°C
90% load185543,852.7°C44.49°C
100% load206045,856.44°C46.97°C
Crossload 1130835,750.04°C44.5°C
Crossload 2114632,143.1°C49.56°C
Crossload 3111931,541.6°C48.99°C
Crossload 4188844,242.63°C52.38°C

Hold-up Time (230v)

Hold-up time (ms)22,4
AC loss to PWR-OK hold up time (ms)16,7
PWR_OK inactive to DC loss delay (ms)5,7


The Superflower Leadex V Pro has shown off several innovative layout changes to achieve its incredible 130mm depth, including moving many components on their own PCB or even using the AC plug PCB for it. It was an interesting, even if at times confusing unit to review.

But… because of its compact size, the fan has to compensate for it, it’s not the kind of tank the original Leadex platinum was in build quality and if you don’t need a unit this compact, there are similarly priced units that offer a lower noise level at the compromise of a bigger footprint. It’s also disappointing to see the use of 20 AWG wires and the low OCP not even allowing to load the unit to 110% while most units have it set around 120-130% these days.

If you’re specifically after a compact PSU for something like an SFF rig, the Leadex V pro should be on your list of considerations… but it had to make a few compromises to achieve it. I’ll leave a few alternatives below, featuring both compact units and more quiet PSUs at a larger footprint.

Superflower Leadex V Pro Platinum

Buy Leadex V Pro Platinum
  • Really compact
  • Solid component choice
  • Good build quality
  • Great electrical performance
  • Really low OCP limit
  • 20 AWG wires used on PCIe
  • Loud




Buy G7
  • 130mm depth
  • Solid component choice
  • Relatively quiet given its size
  • Lower efficiency
  • 10mm deeper



Buy G6 Buy P6
  • 140mm depth
  • Solid component choice
  • Relatively quiet given its size
  • Soon to be discontinued
  • 10mm deeper


Corsair RM1000e

Buy RM1000e
  • 140mm depth
  • Solid component choice
  • Relatively quiet given its size
  • Compatible with Corsair 12VHPWR cable
  • Not yet widely available
  • 10mm deeper


Silverstone SX1000

Buy SX1000
  • Even more compact
  • Solid component choice
  • Only current option for 1000W SFX-L
  • Loud
  • OTP set too high

Corsair HX1000i

Buy HX1000i
  • Very quiet
  • Great component choice
  • ATX 3.0 compatible
  • Compatible with Corsair 12VHPWR cable
  • 180mm depth


Adata XPG Cybercore

Buy Cybercore
  • Very quiet
  • Great component choice
  • Compatible with Corsair 12VHPWR cable
  • 160mm depth
  • No ATX 3.0


MSI Ai1000P

Buy Ai1000P
  • Very quiet
  • Great component choice
  • Included 12VHPWR cable
  • ATX 3.0 compatible
  • 160mm depth
  • Not yet available


Cougar Polar 1050w

Buy Polar
  • Very quiet
  • Great component choice
  • 180mm depth
  • No ATX 3.0 or included/compatible 12VHPWR

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