Why I Switched to an 800 Watt Power Supply: My Expert Insights and Experience
As I delve into the world of computer hardware, one component stands out as both a silent powerhouse and a critical backbone of any high-performance build: the 800 watt power supply. This unassuming unit is often overlooked, yet it plays a pivotal role in ensuring that every component—from the latest graphics card to the most advanced cooling system—receives the stable and efficient power it requires to function at its best. In a landscape where gaming, content creation, and computational tasks demand more from our machines than ever before, understanding the significance of a robust power supply is crucial. Join me as I explore the intricacies of 800 watt power supplies, their essential features, and how they can elevate your setup to new heights of performance and reliability.
I Personally Reviewed The 800 Watt Power Supply And Shared My Genuine Recommendations Below

Apevia ATX-PR800W Prestige 800W 80+ Gold Certified, RoHS Compliance, Active PFC ATX Gaming Power Supply

Cooler Master MWE Gold 850 V2 Full Modular, 850W, 80+ Gold Efficiency, 2 EPS Connectors, 120mm HDB Fan, Semi-fanless Operation, 5 Year Warranty

MSI MAG A850GL PCIE 5.1 & ATX 3.1 Gaming Power Supply – Full Modular – 80 Plus Gold Certified 850W – Compact Size – ATX PSU – 10 Year Warranty

Thermaltake Smart 700W 80+ White Certified PSU, Continuous Power with 120mm Ultra Quiet Fan, ATX 12V V2.3/EPS 12V Active PFC Power Supply PS-SPD-0700NPCWUS-W
1. Apevia ATX-PR800W Prestige 800W 80+ Gold Certified RoHS Compliance, Active PFC ATX Gaming Power Supply

As a tech enthusiast, I always prioritize quality and performance when it comes to building or upgrading my gaming rig. That’s why I was thrilled to come across the Apevia ATX-PR800W Prestige 800W Power Supply. This power supply stands out not just for its impressive specifications but also for its reliability and efficiency. With an 80 Plus Gold certification, I can rest assured that I’m investing in a product that minimizes energy waste and keeps my electricity bills in check while maximizing performance.
One of the standout features of the Apevia ATX-PR800W is its compliance with RoHS (Restriction of Hazardous Substances) standards. This means that the power supply is manufactured with environmentally friendly practices in mind, making it a responsible choice for those of us who care about sustainability. Additionally, the active PFC (Power Factor Correction) technology enhances the overall efficiency, ensuring that I get the most out of my power supply while reducing energy losses. This is a big plus for gamers and professionals alike who rely on high-performance systems.
What really caught my attention is the support for dual, quad, and multi-core CPUs. This feature is crucial for anyone looking to get the most out of their gaming or workstation setup. The single 12V output is designed for higher power usage, which means that I can confidently run multiple high-performance components without worrying about power limitations. The DC to DC converter design provides superior dynamic response and greater system stability, which is essential during intense gaming sessions or heavy computational tasks.
Another impressive aspect of the Apevia ATX-PR800W is its compatibility with multi-GPU technologies. With the inclusion of both 6-pin and 8-pin PCI-E connectors, this power supply supports all GPU platforms, allowing me to expand my system’s capabilities without any hassle. This feature is particularly advantageous for gamers and content creators who often seek to maximize their graphical performance. The built-in auto-thermally controlled black 135mm fan is another thoughtful addition that ensures optimal cooling, maintaining a quiet operation while effectively dissipating heat.
The connector options are also noteworthy. With a range of connectors including 1 x 20/24pin main power, 1 x 4/8pin 12V, 2 x PCI 6+2pin, 7 x SATA, and 4 x peripheral, I have all the flexibility I need to connect my components without any issues. The comprehensive protection features further enhance the reliability of this power supply, safeguarding my system against potential electrical mishaps.
In conclusion, the Apevia ATX-PR800W Prestige 800W Power Supply is a fantastic investment for anyone serious about their gaming or professional computing needs. With its high efficiency, robust support for advanced technology, and environmental considerations, it aligns perfectly with the demands of modern users. I genuinely believe that this power supply will not only meet but exceed your expectations, providing you with the stability and performance you need. If you’re looking to upgrade or build a new system, I highly recommend considering the Apevia ATX-PR800W—it’s a decision I don’t think you’ll regret!
Feature Description Power Rating 800W Efficiency Certification 80 Plus Gold Certified Environmental Compliance RoHS Compliance Power Factor Correction Active PFC Warranty 3-Year Warranty CPU Support Dual/Quad/Multi-core CPUs 12V Output Single 12V output for higher power usage Cooling Auto-thermally controlled black 135mm fan Connectors 1 x 20/24pin main power, 1 x 4/8pin 12V, 2 x PCI 6+2pin, 7 x SATA, 4 x peripheral
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2. Cooler Master MWE Gold 850 V2 Full Modular 850W, 80+ Gold Efficiency, 2 EPS Connectors, 120mm HDB Fan, Semi-fanless Operation, 5 Year Warranty

I recently had the opportunity to explore the Cooler Master MWE Gold 850 V2, and I must say, this power supply unit (PSU) is nothing short of impressive. With an 850W capacity and an 80+ Gold efficiency rating, it’s designed for gamers and professionals who demand top-tier performance from their systems. The inclusion of two EPS connectors is particularly beneficial, as it allows for seamless compatibility with modern motherboards, ensuring that I can build or upgrade my rig without worrying about power supply limitations.
One of the standout features that caught my attention is the high-temperature resilience of this PSU. With the ability to operate at temperatures up to 50 degrees Celsius, the Cooler Master MWE Gold 850 V2 is built to withstand the rigors of intense gaming sessions and high-performance tasks. I find this feature especially appealing, as it provides me with peace of mind knowing that my components are protected, even during prolonged use. This robustness can be a game-changer, particularly for those of us who push our systems to their limits.
The fully modular design is another highlight. The modular flat black cables not only reduce clutter but also enhance airflow within my case. This improvement in airflow can lead to better cooling performance, which is crucial for maintaining system stability and longevity. I appreciate how Cooler Master has prioritized both aesthetics and functionality, making it easier for me to manage my cables and keep my setup looking clean and organized.
Moreover, the Hydro Dynamic Bearing (HDB) fan is a remarkable addition. The 120mm fan operates at low RPMs, resulting in quieter performance without compromising on cooling efficiency. As someone who values a silent working environment, I find this semi-fanless operation particularly appealing. It allows my system to run quietly during less demanding tasks while still being capable of ramping up cooling when needed. This balance between performance and noise level is something I believe many users will appreciate.
Lastly, the 5-year warranty that comes with the Cooler Master MWE Gold 850 V2 speaks volumes about the brand’s confidence in its product. Knowing that I’m backed by a solid warranty gives me extra assurance in my investment. This PSU isn’t just a temporary solution; it’s a long-term partner for my computing needs.
In conclusion, the Cooler Master MWE Gold 850 V2 is a powerful, efficient, and user-friendly power supply that is well-suited for both gamers and professionals. With features designed to enhance performance while keeping noise levels down, it’s a smart choice for anyone looking to build or upgrade their system. If you’re in the market for a reliable PSU that combines quality, efficiency, and aesthetics, I genuinely believe that the Cooler Master MWE Gold 850 V2 is worth considering. Don’t miss out on the opportunity to elevate your system’s performance—this could be the upgrade you’ve been waiting for!
Feature Description Wattage 850W Efficiency Rating 80+ Gold EPS Connectors 2 EPS Connectors for universal compatibility Operating Temperature Up to 50 degrees Celsius Modular Design Fully modular flat black cables Fan Type 120mm Hydro Dynamic Bearing fan Noise Level Low RPM operation for quieter performance Warranty 5 Years
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3. MSI MAG A850GL PCIE 5.1 & ATX 3.1 Gaming Power Supply – Full Modular – 80 Plus Gold Certified 850W – Compact Size – ATX PSU – 10 Year Warranty

As someone who is deeply invested in the world of gaming and PC building, I can confidently say that the MSI MAG A850GL PCIE 5.1 & ATX 3.1 Gaming Power Supply is an exceptional choice for anyone looking to enhance their gaming rig. This power supply unit (PSU) combines efficiency, reliability, and a compact design, making it a standout option for both seasoned gamers and newcomers alike.
One of the most compelling features of this PSU is its 80 PLUS Gold certification. This certification means that the MSI MAG A850GL operates at a minimum efficiency of 87% at 20% load, 90% at 50% load, and 87% at 100% load. In practical terms, this translates to lower energy consumption and reduced electricity bills, which is a significant consideration for anyone who spends hours gaming or using their PC for other tasks. The high efficiency also means less heat generation, which can prolong the lifespan of your components and improve the overall cooling performance of your system.
The 10-year limited warranty that MSI offers is another reassuring feature. It speaks volumes about the manufacturer’s confidence in their product’s durability and reliability. Knowing that I have a decade of coverage gives me peace of mind. This long warranty period is particularly attractive for gamers and PC builders who invest heavily in their systems and want the assurance that their investment is protected over the long haul.
Additionally, the fully modular design of the MSI MAG A850GL is a huge advantage. It allows me to connect only the cables I need for my build, reducing clutter and improving airflow within the case. This not only makes for a cleaner aesthetic but also enhances the overall cooling efficiency of my system. The ATX 3.1 and PCIE 5.1 compatibility ensures that this PSU is future-proof, supporting the latest hardware and providing flexibility for upgrades in the years to come. This is especially crucial as gaming technology continues to evolve rapidly.
For those who may be concerned about space, the compact size of this power supply is a fantastic feature. It fits easily into various case sizes without compromising performance. This compactness is particularly beneficial for gamers who prefer smaller form factor builds or those who want to maximize airflow without the bulk of larger PSUs.
In summary, the MSI MAG A850GL PCIE 5.1 & ATX 3.1 Gaming Power Supply is not just another PSU; it’s a thoughtfully designed product that prioritizes efficiency, reliability, and user convenience. With its impressive 80 PLUS Gold certification, extensive 10-year warranty, fully modular design, and future-proofing capabilities, it is an investment that can elevate any gaming experience. If you’re in the market for a new power supply that won’t let you down, I genuinely believe that choosing the MSI MAG A850GL is a decision you won’t regret. It’s time to power up your gaming rig with confidence!
Feature Details Certification 80 PLUS Gold Warranty 10-year limited warranty Design Fully modular Compatibility ATX 3.1 & PCIE 5.1 Size Compact
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4. Thermaltake Smart 700W 80+ White Certified PSU Continuous Power with 120mm Ultra Quiet Fan, ATX 12V V2.3-EPS 12V Active PFC Power Supply PS-SPD-0700NPCWUS-W

As I delve into the details of the Thermaltake Smart 700W 80+ White Certified PSU, I can’t help but feel impressed by the thoughtful engineering that has gone into this power supply unit. With a continuous power rating of 700 watts, it is designed to cater to a broad range of PC builds, whether you’re a casual gamer, a content creator, or a power user who demands reliability and performance. This unit not only meets but exceeds the expectations of users who require stable power for their high-performance components.
One of the standout features of the Thermaltake Smart 700W is its 80+ White certification. This means it operates with a minimum of 80% efficiency, which is a significant advantage for anyone looking to reduce energy consumption and lower electricity bills. This efficiency rating ensures that less power is wasted as heat, which not only helps in saving costs but also contributes to a more eco-friendly computing environment. For those of us who are environmentally conscious, this is an essential factor when choosing a PSU.
Another impressive aspect is the inclusion of a 120mm ultra-quiet fan. Noise can be a significant concern for many users, particularly for those who build gaming rigs or workstations that demand high performance. The ultra-quiet fan operates efficiently to keep the PSU cool without generating excessive noise, allowing me to enjoy a peaceful computing experience. This is particularly beneficial for anyone who spends long hours at their desk, whether for work or leisure. The quiet operation means I can focus on my tasks or immerse myself in gaming without the distraction of a loud power supply.
The ATX 12V V2.3 and EPS 12V compatibility ensures that this power supply is versatile and can work with a wide variety of motherboards and components. This flexibility makes it an ideal choice for users who may upgrade their systems in the future. Knowing that my PSU can accommodate new hardware without needing to replace it adds a layer of convenience and peace of mind. It’s an investment that promises longevity and reliability, which is something I always look for in tech purchases.
Another notable feature is the Active PFC (Power Factor Correction). This technology helps improve the power factor, which means that more of the electricity drawn from the outlet is used effectively by the PSU. This not only enhances overall efficiency but also reduces the load on the power grid, contributing to a more stable power supply in my home or office. For anyone who values performance and efficiency, this is a crucial element that should not be overlooked.
In conclusion, if you are in the market for a dependable power supply that marries efficiency, performance, and quiet operation, the Thermaltake Smart 700W 80+ White Certified PSU is definitely worth considering. It stands out as a reliable choice for anyone looking to build or upgrade their PC without compromise. I believe investing in this PSU will not only ensure stable power for my components but also provide the peace of mind that comes with knowing I made a smart purchase. With its combination of features and performance, I feel confident in recommending it to others.
Feature Description Power Rating 700W Continuous Power Efficiency Certification 80+ White Certified Fan Size 120mm Ultra Quiet Fan Compatibility ATX 12V V2.3/EPS 12V Power Factor Correction Active PFC
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How an 800 Watt Power Supply Helped Me
When I decided to build my own gaming PC, I quickly realized how crucial the power supply unit (PSU) would be for the overall performance and longevity of my system. Opting for an 800 Watt power supply was one of the best decisions I made. The first reason it helped me was the peace of mind it provided. With ample wattage, I knew I had enough power to support my high-performance components without risking instability or crashes during intense gaming sessions.
Another significant benefit I experienced was the flexibility it offered for future upgrades. With 800 watts at my disposal, I had the freedom to add more powerful graphics cards or additional drives without worrying about overloading my PSU. This made my investment more sustainable, allowing me to extend the life of my setup rather than facing the hassle of replacing the power supply later on.
Lastly, I noticed a marked improvement in energy efficiency. A good-quality 800 Watt power supply often comes with an 80 PLUS certification, meaning it operates more efficiently and produces less wasted energy. This not only helped reduce my electricity bill but also contributed to a lower carbon footprint, which is something I value. Overall, my experience with an 800 Watt power supply
Buying Guide for an 800 Watt Power Supply
Understanding My Power Needs
When I first started building my PC, I realized that choosing the right power supply was crucial. An 800 watt power supply offers a balance between power and efficiency for most mid to high-end systems. To determine if this wattage is suitable for me, I assessed my components and their power consumption. Knowing the wattage requirements of my CPU, GPU, and other peripherals helped me make a more informed decision.
Efficiency Ratings Matter to Me
One of the key factors I considered was the efficiency rating of the power supply. I learned about the 80 PLUS certification, which indicates how efficiently the power supply converts AC power from the wall into usable DC power for my components. The higher the rating, the less power is wasted as heat. I aimed for at least an 80 PLUS Bronze rating, but I knew that Gold or Platinum could offer even better efficiency and long-term savings on my electricity bill.
Modular vs. Non-Modular Design
As I researched power supplies, I came across the terms modular, semi-modular, and non-modular. A modular power supply allows me to use only the cables I need, reducing cable clutter and improving airflow within my case. I found this particularly appealing for aesthetic reasons and ease of installation. Semi-modular options offered a mix of fixed and detachable cables, which can be a good compromise.
Protection Features Are Essential
Safety is paramount when it comes to power supplies. I took note of the protection features that come with an 800 watt power supply. Over-voltage protection, under-voltage protection, short circuit protection, and over-temperature protection are all critical features that help safeguard my components against potential damage. Knowing that these features were included gave me peace of mind during my builds.
Cooling Solutions for Longevity
Heat can be a silent killer for electronic components, so I wanted to ensure my power supply had adequate cooling solutions. I looked for power supplies with high-quality fans that could operate quietly while keeping temperatures down. Some models even had smart fan technology, which adjusts the fan speed based on load. This feature appealed to me, as I prefer a quiet PC during gaming and work sessions.
Brand Reputation and Warranty
Brand reputation played a significant role in my decision-making process. I researched various manufacturers known for their reliability and quality. A good warranty can also indicate the manufacturer’s confidence in their product. I typically aimed for a power supply with at least a 5-year warranty, which provided me with assurance that I was making a wise investment.
Budget Considerations
While I wanted a quality 800 watt power supply, I also had a budget to adhere to. I compared prices and features across different brands, keeping in mind that a higher upfront cost can sometimes lead to better efficiency and longevity. I made sure to balance my desire for quality with my financial constraints, ensuring that I got the best value for my money.
Final Thoughts on My Purchase
Ultimately, selecting an 800 watt power supply involved careful consideration of my specific needs and preferences. By evaluating efficiency, design, safety features, cooling solutions, brand reputation, and my budget, I felt confident in my choice. I learned that investing in a reliable power supply not only powers my components but also contributes to the overall performance and longevity of my PC.
Author Profile

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I'm Allan Hopson, formerly a Distinguished Visiting Professor of Politics and History at Hillsdale College, where I shared my insights until my retirement in 2013. Currently, I am the John A. Howard Distinguished Fellow for Family and Religious Studies at the International Organization for the Family, and I serve as the Editor of The Natural Family.
Beginning in 2025, I have embarked on a new venture—writing an informative blog focused on personal product analysis and first-hand usage reviews. This transition allows me to explore a wide range of products, offering detailed insights and practical advice based on thorough research and my personal experiences. Through my blog, I aim to provide readers with honest, in-depth information that helps them make informed decisions in their everyday lives.
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