Top 8 Best PSU under $100 in 2021 – 80+ Bronze, Semi-Modular, Thermaltake / Corsair / EVGA

By | May 8, 2021

A PSU is the most critical component of a pc build, as it provides power to all components.

Failure to provide power properly could lead to system degradation or even damage but it is rare these days.

It is always recommended to get a good psu from a reputed brand instead of a cheap one. And for $100 you can get a quite powerful psu that is around 700W-850W and is modular in design.

A 700W psu can easily power a mid or high end pc build with powerful graphics card like RTX2080.

PSUs are responsible for converting main AC to low-voltage regulated DC power for the components in a computer build. Their capacity is measured through wattage or watts. The higher the power consumption used for the components to run at full capacity, the higher the wattage they require.

It is important to know that CPUs and GPUs are the primary components that use up energy from your PSU. If you're going for a high-end gaming build, you most likely have to purchase a higher wattage PSU to support them.

Our Top Picks for Best PSU under $100

Here are our top picks for some of the best psus under $100 that you can get. Most of them are 80+ Bronze certified.

1. Thermaltake Smart 700w - 700 watts, Non-Modular, 80+ White Certified, 120mm Ultra Quiet Fan, ATX 12V V2.3/EPS12V, Active PFC Power Supply Check Price
2. Corsair CX Series CX750M - 750 watts, CX-M Semi-Modular, 80+ Bronze Certified, ATX12V/EPS12V, Active PFC Power Supply, 135mm Fan Check Price
3. Aresgame AGK850 - 850 watts, Fully-Modular ATX Power Supply, 80+ Gold Certified, Ultra Quiet 120mm Fan, Honeycomb Ventilation Design Check Price
4. Gamemax RGB850 Rainbow - 850 watts, ATX12V, Fully-Modular, 90+ Gold Certified, Low Noise RGB 140mm Fan, Smart Thermal Control RPM, Active PFC Power Supply Check Price
5. Aresgame AGV750 - 750 watts, Semi-Modular ATX Power Supply, 80+ Bronze Certified, Ultra Quiet 120mm Fan, Honeycomb Ventilation Design Check Price
6. Rosewill Hive-750S - 750 watts, Modular, 80+ Bronze Certified, Silent 135mm Fan, Auto Fan Speed Control, ATX12V, Crossfire and SLI Support Check Price
7. Cooler Master MasterWatt 750w - 750 watts, Semi-Modular ATX Power Supply, 80+ Bronze Certified, Dustproof Silencio FP 120mm Fan, 16 AWG PCI-e Cables Check Price
8. EVGA 750 BQ - 750 watts, Semi-Modular, 80+ Bronze Certified, Teflon Nano-Steel Bearing 140mm Fan, NVIDIA SLI Ready, Power-On Self Tester Check Price

1. Thermaltake Smart 700W 80+ White Certified Power Supply

Thermaltake has a wide range of PSUs. They have PSUs varying from under 400 watts to over 900 watts and above. They showcase these PSUs through an array of different series and that includes the Smart Series.

The Thermaltake Smart 700W or Smart SPD-0700P PSU is the only PSU in Thermaltake's 700W category that comes in a white colorway. It's made with only the highest quality components to assure users of stable and reliable performance.

Thermaltake Smart 700W 80+ White Certified Power Supply

Thermaltake Smart 700W 80+ White Certified Power Supply

Features

  • Dimensions (H x W x L): 86mm x 150mm x 140mm
  • 700 watts
  • Non-Modular
  • 80+ White Standard Certified PSU
  • Haswell Ready
  • 120mm Ultra Quiet Fan
  • ATX12V V2.3/EPS12V
  • Active PFC Power Supply
  • Multiple Connectors

Review

This 700 watt PSU is non-modular. Non-modular PSUs have all their cables permanently attached to the power supply. It is great for builds with tight spaces and little clearance.

The Thermaltake Smart 700W PSU has been tested and proven to run with an efficiency rating of up to 86%. The PSU is also directly compatible with Intel Haswell processors.

It comes with a 120mm Fan that delivers little to no noise at all. The ultra-quiet fan provides excellent airflow by drawing air from the bottom or side of the case and blowing it into the PSU.

With the Active PFC feature, this PSU is capable of delivering a wide range of input voltage from 100V to 240V. It mainly increases energy efficiency, therefore, reducing electricity costs.

The PSU comes with multiple connectors including 2 PCI-E cables, 6 SATA cables, and an ATX 12V cable. Thermaltake is confident with this PSU's performance, giving it a 5-year warranty.

2. Corsair CX Series 750 Watt Modular Power Supply (CX750M)

Corsair Gaming, Inc. has made a variety of PSUs ranging from 550 watts to over 1000 watts in capacity. Corsair currently has 3 PSUs in the 750 watts category, and they mainly differ in 80+ certifications.

The Corsair CX750M is their 750-watt entry from the CX Series, and it has a matte black finish. It promises performance, reliability, and convenience for your PC build.

Corsair CX Series 750 Watt Modular Power Supply (CX750M)

Corsair CX Series 750 Watt Modular Power Supply (CX750M)

Features

  • Dimensions (H x W x L): 86mm x 150mm x 160mm
  • 750 watts
  • CX-M Semi-Modular
  • ATX12V/EPS12V
  • Active PFC Power Supply
  • 135mm Fan
  • 80+ Bronze Certified
  • ATX PSU Form Factor
  • Multiple Connectors

Review

The Corsair CX570M is a 750 watt PSU and has semi-modular features. Compared to non-modular PSUs, a semi-modular PSU like this one allows PC builders to attach or detach cables like the PCIe, SATA, and Molex.

With its modular cabling system, cables can be organized to minimize space allocation in the case and maximize airflow. Cables in the package include an ATX connector, 2 EPS connectors, 4 PCI-E connectors, 4 4-pin Peripheral connectors, 6 SATA connectors, and 1 Floppy connector.

This PSU is 80+ Bronze Certified. It delivers up to 85% energy efficiency which means that it generates less heat. If there's less heat generated, the 135mm fan doesn't have to run as much as it has to, which results in quieter and more efficient performance.

3. Aresgame 850W Fully Modular Power Supply (AGK850)

Based in El Monte, California, Aresgame is a tech brand that mainly produces quality PSUs at a low cost. It competes with the heavily saturated PSU market by proving that all its PSUs are 80+ certified.

The AGK850 is an 850-watt entry by Aresgame added to their versatile line of PSUs. It's designed to deliver stability and durability for any type of PC build.

Aresgame 850W 80+ Gold Modular PSU (AGK850)

Aresgame 850W 80+ Gold Modular PSU (AGK850)

Features

  • Dimensions (H x W x L): 85mm x 140mm x 150mm
  • 850 watts
  • Fully Modular
  • Ultra Quiet 120mm Fan
  • 80+ Gold Certified
  • Honeycomb Ventilation Design
  • High-end VGA Card Support
  • Convenient Cable Design

Review

The AGK850 is 80+ Gold Certified. It delivers up to 90% efficiency or even higher under typical loads. It offers reliable output voltages and has a VAC Input ranging from 100V to 240V providing stable power delivery and overall efficiency.

The PSU has an 850-watt capacity with fully modular cables and additional zip ties for cable management. The cables are removable, therefore, giving you the option to install the only ones that you will need. The cables included are measured at a length of 500mm which fits well on high-end cases.

With the honeycomb design and the 120mm fan, this PSU delivers better heat dissipation and improved airflow. It also supports up to 2x8 (6+2) PCI-E Ports, easily powering up the latest GPUs in the market.

4. Gamemax 850W Fully Modular Power Supply (RGB850 Rainbow)

GameMax is a brand developed from its predecessor Sohoo Technology based in Guangdong, China. They have been producing quality PC components, including PSUs for over 10 years.

The RGB850 Rainbow PSU boasts value and performance at an affordable price.

GAMEMAX 850W Fully Modular Power Supply (RGB-850)

GAMEMAX 850W Fully Modular Power Supply (RGB-850)

Features

  • Dimensions (H x W x L): 68mm x 150mm x 170mm
  • 850 watts
  • Fully Modular
  • 80+ Gold Certified
  • ATX12V V2.3/EPS12V
  • Ultra Quiet ARGB 140mm Fan
  • Smart Thermal Control RPM
  • Active PFC Power Supply
  • Honeycomb Ventilation Design
  • High-Level Capacitor
  • Easy Cable Management

Review

The RGB850 Rainbow PSU has a capacity of 850-watts. It can support the latest CPU and GPU in the market today and even two GPUs if the wattage allocation is properly calculated.

It is 80+ Gold Certified. Efficiency rating is proven to be at 90% under typical loads, saving more energy while maximizing performance.

The PSU comes with fully modular cables which save space and promote better airflow for your PC build. The honeycomb ventilation design also promotes better heat dissipation.

Its most distinguishing feature is its fully customizable ARGB 140mm fan. You can play with over 25 smart RGB light modes and effects with the press of a button.

The fan has Smart Thermal Control RPM. This feature adjusts the fan's speed as the load is lowered. It maintains the temperature, lowers noise, and reduces power consumption.

5. Aresgame 750W Semi Modular Power Supply (AGV750)

Get one win all. The AGV750 is one of Aresgame's entries for their wide variety of 750-watt PSUs. The price to performance ratio on this hardware is excellent for your quality budget builds.

The PSU is most recommended for gaming as it has proven to deliver stable power output through long periods of use.

Aresgame 750W Semi Modular Power Supply (AGV750)

Aresgame 750W Semi Modular Power Supply (AGV750)

Features

  • Dimensions (H x W x L): 85mm x 140mm x 150mm
  • 750 watts
  • 80+ Bronze Certified
  • Semi-Modular ATX Power Supply
  • Ultra Quiet 120mm Fan
  • Honeycomb Ventilation Design
  • High-end VGA Support
  • Convenient Cable Design

Review

The AGV750, with its 750-watt capacity, is 80+ Bronze Certified. It delivers up to 85% efficiency or higher under typical loads. It provides constant power to handle full loads and overclocking while maintaining cool temperatures.

Inside the package are multiple connectors including SATA, Molex, and PCI-e. The PSU supports high-end VGA cards out in the market today.

Cables are at least 500mm in length and semi-modular with a sleek all-black finish. The CPU and MOBO power are attached to the PSU while other cables are detachable. It can save space for the case promoting better airflow output.

An ultra-quiet 120mm fan is also included in the package. Along with its honeycomb ventilation design, this PSU yields excellent heat dissipation and overall improved performance.

6. Rosewill Hive-750W 80 Plus Bronze Power Supply

Established in 2004, Rosewill is a tech brand originally developed by Newegg. Rosewill manufactures quality tech products and computer components. Their main headquarters is located in California, USA.

The Rosewill Hive Series of PSUs are of very great value. The Hive-750S, in particular, is built to the highest quality standard and delivers excellent performance for PC enthusiasts.

Rosewill Hive-750W 80 Plus Bronze Power Supply

Rosewill Hive-750W 80 Plus Bronze Power Supply

Features

  • Dimensions (H x W x L): 85mm x 150mm x 160mm
  • 750 watts
  • 80+ Bronze Certified
  • Fully Modular
  • Silent 135mm Fan
  • Auto Fan Speed Control
  • ATX12V V2.3/EPS 12V
  • Extra-long Cables
  • Crossfire and SLI Support
  • Active PFC Power Supply

Review

The Rosewill Hive-750S has a 750-watt power capacity. The PSU is 80+ Bronze certified which delivers up to 87% efficiency at normal loading conditions.

Cables are measured at a length of over 550mm to support full tower cases and they are fully modular. The cables are also in mesh sleeves for better cable management and optimized airflow.

The PSU also features a 135mm Fan. The fan promotes intelligent thermal operation for better airflow. It has auto fan speed control which aims to provide you with low temperatures and low noise levels.

Crossfire and SLI are multi-GPU solutions. This PSU can support both. It even allows the installation of two GPUs if necessary.

The Active PFC feature automatically adjusts input voltage with a range of 100V to 240V. This gives way for a more efficient overall performance. The PSU ensures reliability with a 3-year warranty by Rosewill.

7. Cooler Master MasterWatt 750 Watt Semi-Modular Power Supply

Cooler Master is one of the leading PC tech brands in 2021. It has garnered multiple awards for its products, including its own line of PSUs.

The Cooler Master MasterWatt 750 received a few awards and some recognition from international sites. The PSU was first introduced in 2018 and it's built with only the highest quality standards.

Cooler Master MasterWatt 750 Watt Semi-Modular Power Supply

Cooler Master MasterWatt 750 Watt Semi-Modular Power Supply

Features

  • Dimensions (H x W x L): 86mm x 150mm x 140mm
  • 750 watts
  • Semi-Modular
  • 80+ Bronze Certified
  • ATX 12V v2.4
  • Active PFC Power Supply
  • Dustproof and Silent 120mm Fan
  • Dual Forward and DC-to-DC Circuit Design
  • Conductive 16 AWG PCI-e Cables
  • Operating Temperature: 0-40°C

Review

The MasterWatt 750 from Cooler Master packs some notable features. It has a 750-watt power capacity and an active PFC which automatically adjusts input voltage from 100V to 240V.

The PSU is 80+ Bronze Certified, enabling an average of up to 85% efficiency at typical loads. Moreover, its cables are semi-modular. The package includes 16 Conductive AWG PCI-E cables that provide less resistance resulting in even more performance efficiency.

This PSU is also equipped with a low noise 120mm Silencio FP fan. The fan features an LDB bearing design giving it a boost in durability and making it almost completely dustproof.

With the dual forward and DC-to-DC design, this PSU converts DC input to a DC output at a different voltage level for stability purposes. This results in reduced noise levels of the PSU and improved overall performance.

8. EVGA 750 BQ Semi Modular Power Supply

EVGA's BQ Series offers great quality PSUs at an affordable price range. The 750 BQ by EVGA boasts value and efficient performance in one PSU.

This PSU comes with a 5-year warranty and unparalleled customer support. EVGA ensures that PC enthusiasts are given stability and reliability from their line of products.

EVGA 750 BQ Semi Modular Power Supply

EVGA 750 BQ Semi Modular Power Supply

Features

  • Dimensions (H x W x L): 85mm x 150mm x 165mm
  • 750 watts
  • 80+ Bronze Certified
  • Semi-Modular
  • Teflon Nano-Steel Bearing 140mm Fan
  • Single +12V Rail Design
  • NVIDIA SLI Ready
  • Operating Temperature: 0-40°C
  • Power-On Self Tester

Review

The EVGA 750 BQ has a 750-watt power capacity. The PSU is 80+ Bronze Certified with an efficiency rating averaging at 85% under typical loads.

The cables are semi-modular. This allows unnecessary cables to be removed from the PSU reducing case clutter and maximizing case airflow.

Included in the package is a Teflon Nano-Steel Bearing 140mm fan. This type of design enables the fan to run at high RPMs while maintaining low noise levels all throughout.

EVGA is a widely known manufacturer of NVIDIA graphics cards. Their own line of PSUs is also known to be NVIDIA SLI ready. It can support the latest NVIDIA GPUs, giving you the ultimate gaming experience possible.

Conclusion

A good power supply unit is an important component for a good overall PC build. For budget PC builds, it is best to allocate a portion of the budget to a trusted PSU to ensure safety and long life of components

A larger power supply like your 1000-watt PSU has more wattage allocation, but it doesn't necessarily mean it's more powerful. Your CPU and GPU will never take up more power than it actually needs.

A smaller size PSU can be more cost-efficient depending on the type of rig you're building. If you go for a high wattage psu in low budget, the rating will be probably bronze and not gold. If you want both high wattage with gold rating, then you need to spend more.

We have just compiled a list of the 8 best PSUs under $100 that we recommend in 2021. Narrowing down the choices is in your hands now.

Links and Resources

For more information about the products, check out their official site at the following links:

#1. Thermaltake Smart 700W 80+ White Certified Power Supply
#2. Corsair CX Series 750 Watt Modular Power Supply (CX750M)
#3. Aresgame 850W Fully Modular Power Supply (AGK850)
#4. Gamemax 850W Fully Modular Power Supply (RGB850 Rainbow)
#5. Aresgame 750W Semi Modular Power Supply (AGV750)
#6. Rosewill Hive-750W 80 Plus Bronze Power Supply
#7. Cooler Master MasterWatt 750 Watt Semi-Modular Power Supply
#8. EVGA 750 BQ Semi Modular Power Supply

Category: PSUs
About Silver Moon

A Tech Enthusiast, Blogger, Linux Fan and a Software Developer. Writes about Computer hardware, Linux and Open Source software and coding in Python, Php and Javascript. He can be reached at [email protected].

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