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Gigabyte GP-PW400 400W Power Supply

Gigabyte GP-PW400 400W Power Supply

Product Id:

Regular Price  2,930
Special Price  2,800

Quick Overview

Gigabyte GP-PW400 400W Power Supply

Additional Information

Model Gigabyte GP-PW400
Type ATX 12V v2.31
Fan Size Yes, 120mm
Input Current 8A
Input Voltage 100-240 Vac
Input Frequency Range 50-60Hz
Over Voltage Protection Yes
Maximum Power 400 Watt
SATA Power Connectors 3
PCIe Connectors 1
EPS Connectors 1
ATX Main Connectors 1
MTBF 100,000 hours
Efficiency 80 Plus White Certified
Dimensions 150 x 140 x 86mm
Part No PW400
Warranty 2 year



Gigabyte GP-PW400


  • 80 PLUS certified
  • 120mm Silent Fan
  • Single +12V rail
  • OPP/UVP/OVP/SCP/OCP/OTP Fully protection


80 Plus certified ensures the better power efficiency. Less power waste reduces the heat and fan noise. PW400 can be up to 84% efficiency. (80 Plus qualification is 80%)



PW400 provides the best solution for the system builds. The mesh braided cable reduces the clutter and improves the airflow in the case.



120mm silent fan optimizes the noise reduction and the thermal performance. The fan speed is adjusted according to the automatic power detection. The Hydraulic Bearing fan provides longer and more stable life time.



Single +12V rail provides the best power output, stability and compatibility for the hardware. And it is the best design for installation.







Model - Gigabyte GP-PW400, Type - ATX 12V v2.31, Maximum Power - 400 Watt, Input Voltage - 100-240 Vac, Input Frequency Range - 50-60Hz, Input Current - 8A, Over Voltage Protection - Yes, Efficiency - 80 Plus White Certified, Fan Size - Yes, 120mm, ATX Main Connectors - 1, EPS Connectors - 1, PCIe Connectors - 1, SATA Power Connectors - 3, 4-Pin Peripheral Connectors - 2, MTBF - 100,000 hours, Dimension( W/H/D) - 150 x 140 x 86mm, Warranty - 2 years, Part No - PW400

Power Supply Units [PSUs] are often overlooked during a PC build despite its crucial part in determining the reliability of the entire system. All your PC components depend on PSU for power. Even if you’re on a tight budget, you don’t want to make any compromises when it comes to the power supply. We’re here to discuss factors you need to consider before purchasing the PSU for your rig.

Factors need to be considered before purchasing a PSU -

Wattage Requirement: There is no point in buying a PSU with way more potential power than you’ll ever use. A PSU calculator web page or software can be handy in finding a rough estimation about the wattage requirement of your build. However, it is not recommended purchasing a PSU just above your system's power needs. A PSU delivers maximum efficiency with 40 to 60 percent load. Besides, the performance of a PSU declines with time. So, you better opt for a PSU capable of taking you through your next few upgrades for multiple years.

Physical Dimensions of the PC Case: You must buy a PSU that fits inside your PC case. Higher-wattage PSUs tend to be a bit longer [compared to typical 5.5 inch PSUs] to house the additional power components they need. This may create issues with cable routing or even with placing other internal components inside the case. So, it is a must to go for a PSU compatible with your PC case.

Type and Number of Connectors: Different PSUs come with different types of power connectors, including 20/24-pin power, 4-pin ATX12V, 4-pin Molex, floppy, SATA, 6-pin PCI-Express graphics and 8-pin PCI-Express graphics. You must get a power supply with connectors your PC components required. If you don’t find required connectors in a PSU within your budget, check what cable adaptors the PSU includes to extenuate the problem.

Modular or Non-Modular: If you have limited space in your case, it’s worth paying extra for a modular power supply. A modular PSU let you plug in the power cables you need and leave the extra ones. This facility will help reducing cable clutter that can hinder airflow and heat up the atmosphere inside the case.

Power Efficiency: PSUs convert voltages from wall outlets to lower levels as required by the PC. The power supply wastes some power as heat during the conversion. A PSU with higher efficiency means it can power the PC with minimum loss of electricity. Anything 80% and above is good. With a more efficient PSU, you can end up saving money as it will require less electricity to power your PC. The "80 Plus" Certification shows that the power supply has been tested to have 80% efficiency at every load. There are higher tiers of 80 Plus that show even higher efficiency such as 80+ Bronze or Silver. As the efficiency of the PSU gradually drops during the lifespan of the PSU, it is recommended to opt for a PSU with the maximum efficiency possible as long as it agrees with your budget.

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