Best Power Supply For I9 9900k: How To Find The Right One

Best Power Supply For I9 9900k

Before buying a power supply for your new I9 9900k, you need to understand the basic difference between the standard I7 and I9 CPU. There are many details that you need to consider when buying an i9 9900k power supply, such as the type of processor and motherboard.

Quick table with our top 3 picks:

Product
Intel BX80684I99900KF Intel Core i9-9900KF Desktop Processor 8 Cores up to 5.0 GHz Turbo Unlocked Without Processor Graphics LGA1151 300 Series 95W
EVGA 500 W1, 80+ WHITE 500W Power Supply( 100-W1-0500-KR)
CORSAIR RM Series (2021), White, RM850, 850 Watt, 80 Plus Gold Certified, Fully Modular Power Supply
Intel BX80684I99900KF Intel Core i9-9900KF Desktop Processor 8 Cores up to 5.0 GHz Turbo Unlocked Without Processor Graphics LGA1151 300 Series 95W
EVGA 500 W1, 80+ WHITE 500W Power Supply( 100-W1-0500-KR)
CORSAIR RM Series (2021), White, RM850, 850 Watt, 80 Plus Gold Certified, Fully Modular Power Supply
Product
Intel BX80684I99900KF Intel Core i9-9900KF Desktop Processor 8 Cores up to 5.0 GHz Turbo Unlocked Without Processor Graphics LGA1151 300 Series 95W
Intel BX80684I99900KF Intel Core i9-9900KF Desktop Processor 8 Cores up to 5.0 GHz Turbo Unlocked Without Processor Graphics LGA1151 300 Series 95W
Product
EVGA 500 W1, 80+ WHITE 500W Power Supply( 100-W1-0500-KR)
EVGA 500 W1, 80+ WHITE 500W Power Supply( 100-W1-0500-KR)
Product
CORSAIR RM Series (2021), White, RM850, 850 Watt, 80 Plus Gold Certified, Fully Modular Power Supply
CORSAIR RM Series (2021), White, RM850, 850 Watt, 80 Plus Gold Certified, Fully Modular Power Supply

Top 10 Best Power Supply For I9 9900k Reviewed

SaleBestseller No. 1
Intel BX80684I99900KF Intel Core i9-9900KF Desktop Processor 8 Cores up to 5.0 GHz Turbo Unlocked Without Processor Graphics LGA1151 300 Series 95W
  • 8 Cores/ 16 Threads
  • 3.60 GHz up to 5.00 GHz Max Turbo Frequency/ 16 MB Cache
  • Compatible only with Motherboards based on Intel 300 Series Chipsets
  • Discrete GPU – No Processor Graphics
  • Intel Optane Memory Supported; Maximum temperature allowed at the processor: 100°C
SaleBestseller No. 2
Intel Core i9-12900K Desktop Processor 16 (8P+8E) Cores up to 5.2 GHz Unlocked LGA1700 600 Series Chipset 125W
  • The processor features Socket LGA-1700 socket for installation on the PCB
  • 30 MB of L3 cache memory provides excellent hit rate in short access time enabling improved system performance
  • 10 nm enables improved performance per watt and micro architecture makes it power-efficient
  • Intel 7 Architecture enables improved performance per watt and micro architecture makes it power-efficient
SaleBestseller No. 3
EVGA 220-G5-0750-X1 Super Nova 750 G5, 80 Plus Gold 750W, Fully Modular, ECO Mode with Fdb Fan, 10 Year Warranty, Compact 150mm Size, Power Supply
  • 80 plus Gold certified, with 91% efficiency or higher under typical loads
  • Fully modular to reduce clutter and improve airflow
  • 100% Japanese capacitors, active clamp +DC-DC converter design to improve 3.3V./ 5V. Stability
  • Fluid Dynamic Bearing fan and EVGA eco mode for ultra-quiet operation and increased lifespan
  • NVIDIA SLI & AMD Crossfire Ready
SaleBestseller No. 4
EVGA SuperNOVA 120-GP-0850-X1, 850 G+, 80 Plus Gold 850W, Fully Modular, FDB Fan, 10 Year Warranty, Includes Power ON Self Tester, Power Supply
  • EVGA 850 G+ "The New Gold Standard for Performance and Value" JonnyGURU quoted “We were promised Gold but this one did Platinum
  • 80 PLUS Gold certified, with 90 percent (115VAC)/92 percent (220VAC~240VAC) efficiency or higher under typical loads
  • Fan Size/Bearing: 135mm fluid Dynamic Bearing
  • Heavy duty protections, including OVP, UVP, OCP, OPP, SCP, and OTP
  • 10 year
SaleBestseller No. 5
Intel Core i9-10900K Desktop Processor 10 Cores up to 5.3 GHz Unlocked  LGA1200 (Intel 400 Series Chipset) 125W
  • 10 Cores / 20 Threads
  • Socket type LGA 1200
  • Up to 5. 3 GHz unlocked
  • Compatible with Intel 400 series chipset based motherboards
  • Intel Turbo Boost Max Technology 3. 0 support
Bestseller No. 6
Noctua NH-D15 chromax.Black, Dual-Tower CPU Cooler (140mm, Black)
  • Proven premium heatsink (more than 300 awards and recommendations from international hardware websites), now available in an all-black design that goes great with many colour schemes and RGB LEDs
  • Extra-wide 140mm dual-tower design with 6 heatpipes and dual fans provides maximum quiet cooling efficiency on a par with many all-in-one watercoolers, ideal for overclockers and silent-enthusiasts!
  • Dual-fan design with renowned, award-winning NF-A15 140mm fans with Low-Noise Adaptors and PWM for automatic speed control: Full cooling performance under load, whisper quiet at idle!
  • Includes high-end NT-H1 thermal paste and SecuFirm2 mounting system for easy installation on Intel LGA1700 (LGA17xx family) LGA1200, LGA115x, LGA2011, LGA2066 and AMD AM4 & AM5
  • Renowned Noctua quality backed up by 6-year manufacturer’s warranty, deluxe choice for Intel Core i9, i7, i5, i3 (e.g. 12900K, 12700K, 12600K) and AMD Ryzen (e.g. 5800X3D, 5700X, 5600, 5500)
Bestseller No. 7
Corsair CX-M Series, CX450M, Modular Power Supply, 80 Plus Bronze
  • Low-noise operation lets you focus more on the task at hand, whether it’s gaming or work. A rifle bearing fan ensures longer life than conventional bearings with less noise.
  • Semi-modular cabling with single EPS12V connectors lets you connect only the cables you need for a clean build with easy cable management.
  • Japanese capacitors deliver consistent and reliable power, rated up to 105°C.
  • 80 PLUS Bronze certification guarantees more efficient power use and lower operating temperatures.
  • Robust DC-DC conversion for +3.3V and +5V provides clean, consistent power to all components and peripherals.
Bestseller No. 8
be quiet! Dark Rock Pro 4, BK022, 250W TDP, CPU Cooler
  • AMD compatibility: AM4
  • Intel compatibility: 1700 / 1200 / 2066 / 1150 / 1151 / 1155 / 2011(-3) Square ILM
  • Two virtually inaudible silent Wings PWM fans
  • Funnel-shaped frame of the front fan for high air pressure
  • Achieves only 24.3Db(a) at maximum fan speed
SaleBestseller No. 9
EVGA 500 W1, 80+ WHITE 500W Power Supply( 100-W1-0500-KR)
  • EVGA 500 Watt; Unbeatable value
  • 80 plus white certified, with 80 percentage efficiency or higher under typical loads
  • Heavy duty protections, including OVP (Over voltage protection); UVP (Under voltage protection, OCP (Over current protection), OPP (Over power protection), and SCP (Short circuit protection)
  • Compatibility of the EVGA 500 W1, 80 white 500 W, Power supply 100 W1 0500 KR (100 W1 0500 KR)
SaleBestseller No. 10
EVGA SuperNOVA 1000 G+, 80 Plus Gold 1000W, Fully Modular, FDB Fan, 10 Year Warranty, Includes Power ON Self Tester, Power Supply 120-GP-1000-X1
  • EVGA 1000 G+ - "The New Gold Standard for Performance and Value" - JonnyGURU quoted “We were promised Gold but this one did Platinum”
  • 80 PLUS Gold certified, with 90% (115VAC)/92% (220VAC~240VAC) efficiency or higher under typical loads
  • Fan Size/Bearing: 135mm fluid Dynamic Bearing
  • Heavy-duty protections, including OVP, UVP, OCP, OPP, SCP, and OTP
  • 10 year

Buying Guide For The Best Power Supply For I9 9900k

  1. Power Supply Type

The best power supply for I9 9900k is a nonmodular one. The reason behind this is that it makes more sense to buy a single unit of power supply. If you have a special case, then you need to buy the power supplies separately. This can be quite costly when you have multiple cases or if your computer does not fit in the case.

  1. PSU Output Power

It is important to know how much of the maximum output power will be used by your processor and other components. The maximum output power for I9 9900k is 100Watts, which means that there should be enough wattage for your system as a whole and nothing more than that. If you want to overclock your processor, then you also need to take into account the current draw from the motherboard and other components while overclocking.

  1. Cable Lengths

You should avoid buying an i9 9900k power supply with too short cables as it will make things difficult if you want to use another component with the same cable length later on in life. It may be inconvenient when investing in different components at different times, so choose wisely while buying an i9 9900k power supply with long cables so that there are no problems later on in life when you want something else connected to the same cable length as well as being able to use all of its connectors at once.

  1. Efficiency Rating And Noise Level

The efficiency rating of the power supply is important because it determines how much of the power generated by the power supply will be wasted as heat. The noise level also determines how much it will interfere with your system and therefore can be quite annoying. You need to look for a PSU that has a high-efficiency rating and low noise level in order to make your life easier.

  1. Efficiency Rating And Noise Level

The efficiency rating of the power supply is important because it determines how much of the power generated by the power supply will be wasted as heat. The noise level also determines how much it will interfere with your system and therefore can be quite annoying. You need to look for a PSU that has a high-efficiency rating and low noise level in order to make your life easier.

  1. Cable Lengths

You should avoid buying an i9 9900k power supply with too short cables as it will make things difficult if you want to use another component with the same cable length later on in life. It may be inconvenient when investing in different components at different times, so choose wisely while buying an i9 9900k power supply with long cables so that there are no problems later on in life when you want something else connected to the same cable length as well as being able to use all of its connectors at once.

Conclusion 

After reading through this guide, you should now have a good idea of what to look for when buying the right i9 9900k power supply. Start by looking at the size of the power supply and then take a look at what it can do and what it’s capable of. This will help you decide which one is best suited to your computer build as well as how much room you need for your build.

Staci Duke is a professional writer with years of experience in the field. Specializing in SEO copywriting, she has written for a variety of clients in a wide range of industries.

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