Super Flower
LEADEX III GOLD UP ATX 3.1 1000W
AUTHOR:Onie T.
TESTED BY:Lucas N.
Published:

The Super Flower LEADEX III Gold 1000W is a fully modular, 1000 W ATX 3.1 power supply featuring an additional fan mode. As of the publication date, it is available from Newegg for $159.99 USD MSRP. This power supply adheres to the updated ATX 3.1 PCIe 5.1 standards, including a 12V-2x6 cable rated for up to 600W. 

During testing, we observed discrepancies in the marketing in regards to their 80PLUS Gold certification. The 80PLUS database report for this model number, SF-1000F14GE, refers to an older 2016 power supply, and the tested unit does not match the photo in the report. Similarly, while the power supply claims a Cybenetics Gold rating, no report is available for the 1000 W model; only the 1300 W version (SF-1300F14GE) has been certified. Although the lack of clear certification raises some questions, we find the 1300 W model’s certificate reassuring. That said, it’s important to note that the components in the 1000 W model will differ and and it is unknown how much of the design is shared between the models.  

Despite these issues, we recommend the LEADEX III Gold 1000W for its excellent load regulations and ability to withstand power excursions.

WHAT YOU NEED TO KNOW

THE GOOD

  • Load Regulation

    The power supply excels in load regulation, with the 12V rail experiencing a voltage variation of less than 100 mV across the entire load range. The 5V and 3.3V rails also exhibit exceptional performance remaining remarkably flat throughout the load range.

THE BAD

  • Efficiency Certifications

    While it is marketed as 80PLUS Gold and Cybenetics Gold, we were unable to find the corresponding data reports. However, our testing indicates that it would likely meet the efficiency standards required for 80PLUS Gold certification.

THE REST

  • Overall

    Despite the discrepancies surrounding its efficiency certifications, the LEADEX III Gold 1000W performs impressively in load regulations and demonstrates strong resilience to power excursions, making it an acceptable choice based on our testing.

LINKS
Where to buy*
Newegg

*This website uses affiliate links. Purchases made through these links may provide compensation to Linus Media Group.

Hardware
HardwareNotes

The LEADEX III Gold 1000W is an ATX form factor power supply. In the Box, it includes minimal accessories, including cables, mounting bolts, and user documentation. The cables are flat and flexible, with a 12V-2x6 cable rated for up to 600W, in line with ATX 3.1 standards. 

The unit features a 140 mm Fluid Dynamic Bearing fan. On the Super Flower website they specify that the Operating Temperature is up to 50°C, though we cannot verify this through testing.

In the Box

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Front of the box.

Construction

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Power input side of the PSU.

Case Format
Cable Form
Colour
Colour Theme
Case Width
Case Height
Case Length
Case Effective Length
Mass
Fan & Cooling
Top of the PSU displaying the fan.

Top of the PSU displaying the fan.

Cooling Method
Fan Diameter
Specifications
Bottom of the PSU displaying the specifications.

Bottom of the PSU displaying the specifications.

ATX Version
80PLUS Rating
Cybenetics ETA
Cybenetics Lambda
Input Frequency Range
Input Voltage Range
Operating Temperature Range
Storage Temperature Range
Cables
1xMotherboard
24-pin Motherboard:
2xCPU / PCIe
4+4-pin CPU:
4xCPU / PCIe
6+2-pin PCIe:
1x12VHPWR / 12V-2x6
12V-2x6 (600W):
1xPeripheral / SATA
Molex:
Molex:
Molex:
Molex:
2xPeripheral / SATA
SATA (Right Angle):
SATA (Right Angle):
SATA (Right Angle):
SATA (Right Angle):
Power Ratings
+12 V+5 V+3.3 V+5 Vsb-12 V
CURRENT83.3 A20 A20 A3 A0.5 A
WATTAGE999.6 W100 W15 W6 W
1000 W

Please note that the above ratings are manufacturer advertised specifications.

Features & Software
Features & SoftwareNotes

This power supply offers a hybrid fan mode, which includes the ECO mode (ECO Intelligent Thermal Control System) designed for silent operation. The fan will not start until the power supply measures approximately 60°C and will stop once the temperature has decreased to the 45-48°C range. This mode can be toggled with a physical switch on the rear of the unit. 

The LEADEX III Gold 1000W is equipped with standard protections and is backed by a 10-year warranty.

Modes
Protections
Over Current Protection (OCP)
Over Power Protection (OPP)
Short Circuit Protection (SCP)
Over Temperature Protection (OTP)
Over Voltage Protection (OVP)
Under Voltage Protection (UVP)
Performance
PerformanceNotes

In terms of performance, the LEADEX III Gold 1000W demonstrated excellent results. The 12V rail showed a voltage drop of just 0.094 V across the full 1000 W output, which is within ATX specifications and better than many other power supplies tested. 

The 12V rail also maintained a peak-to-peak ripple of 39 mV under full load, meeting ATX ripple standards. The 5V and 3.3V rails also performed well, with ripple readings of 27 mV and 37 mV, respectively, and both remained flat across the load range. 

During excursion testing, the power supply successfully kept voltages within ATX specifications, demonstrating consistent performance even under the strain of newer, high-power GPUs.

Voltage Ripple
Load Regulation
Power Excursion

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Productivity & Efficiency
Productivity & EfficiencyNotes

Despite discrepancies in its 80PLUS and Cybenetics certifications, the LEADEX III Gold 1000W meets the basic efficiency criteria for 80PLUS Gold based on our testing. 

The power supply showed good resilience to brownouts, enduring 18 ms at full load for both 115V and 230V. Its Over Power Protection (OPP) engaged at a maximum of 144% of its rated load, with the 12V rail capable of 120A, or 144% of its rating. While this is on the higher end, it is within normal parameters and unlikely to cause issues.

Efficiency
Brownout
Brownout/Hold-Up Duration 115 V 60 Hz 20°C
Over Current Protection (OCP)
Test Configuration
Video Overview
Test Bench
AC Source
Automated Test Software
DC Load Mainframe
Dual Channel Loads
Chroma 63610-80-20
Environmental Chamber
Microphone
Multimeter
ON/OFF Controller
Chroma 80613
Power Meter
SC/OVP Tester
Chroma 80612
Thermocouple Scanner
Noise Analyzer
Single Channel Loads
Chroma 63640-80-80

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