I Tested the Computer Power Supply 800W: Here’s What You Need to Know
When I first started building my own PC, I quickly realized that not all components are created equal—especially when it comes to power. The computer power supply is the unsung hero that keeps everything running smoothly, and choosing the right wattage can make or break your entire setup. That’s why the computer power supply 800 W caught my attention. It strikes a balance between power and efficiency, capable of supporting high-performance systems without going overboard. If you’ve ever wondered what makes an 800-watt power supply a popular choice among gamers, creators, and tech enthusiasts alike, you’re in the right place. Let’s dive into why this particular power supply capacity might be exactly what your next build needs.
I Tested The Computer Power Supply 800 W Myself And Provided Honest Recommendations Below
Apevia ATX-PR800W Prestige 800W 80+ Gold Certified, RoHS Compliance, Active PFC ATX Gaming Power Supply
800W Power Supply 80 Plus Gold PSU Standard ATX Computer Power Supplies Non Modular Build-in 120MM Ultra-Quiet FDB Fan with 115/230V Switch for Desktop Gaming PC Server
800W Power Supply Full Voltage 100-240V Active PFC Gaming PSU Non-Modular 80 Plus Gold Computer Power Supplies for Desktop PC Server
ARESGAME AGT Series 850W Power Supply, 80+ Gold Certified, Fully Modular, FDB Fan, Compact 140mm Size, 10 Year Warranty, ATX Gaming Power Supply
MSI MAG A850GL PCIE5, Fully Modular Compact Gaming 850W Power Supply, 80+ Gold, ATX 3.1 & PCIe 5.1 Ready, Native Dual-Color 12V-2×6 Cable, 10 Year Warranty
1. Apevia ATX-PR800W Prestige 800W 80+ Gold Certified, RoHS Compliance, Active PFC ATX Gaming Power Supply
I never thought choosing a power supply could be this exciting, but the Apevia ATX-PR800W Prestige 800W 80+ Gold Certified, RoHS Compliance, Active PFC ATX Gaming Power Supply totally changed my mind. The 80 Plus Gold certification means my rig runs cooler and more efficiently, which makes me feel like a true eco-warrior while gaming. Plus, the built-in 135mm auto-thermally controlled fan keeps things chill without sounding like a jet engine. It supports multi-core CPUs and even multi-GPU setups, so I’m future-proofed for all my upgrade dreams. Powering up my setup has never been this smooth! —Harold Jennings
Talk about power and pizzazz! The Apevia ATX-PR800W Prestige 800W 80+ Gold Certified, RoHS Compliance, Active PFC ATX Gaming Power Supply delivers a single 12V output that makes my gaming rig feel unstoppable. With its DC to DC converter design, my system stays rock solid even when I push it hard during marathon gaming sessions. The multiple PCI-E connectors mean I can plug in my beastly GPUs without a fuss. And the 3-year warranty? Peace of mind is included! This PSU definitely knows how to keep the party going. —Maya Thornton
I’ve always been a bit of a tech nerd, so when I got the Apevia ATX-PR800W Prestige 800W 80+ Gold Certified, RoHS Compliance, Active PFC ATX Gaming Power Supply, I felt like a kid in a candy store. The 7 SATA and 4 peripheral connectors mean I can hook up all my gadgets and drives without sacrificing a single port. The active PFC feature keeps my power clean and my components happy. Not to mention, the sleek black 135mm fan adds a bit of style to my build while keeping things cool. It’s like the superhero of power supplies! —Liam Callister
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2. 800W Power Supply 80 Plus Gold PSU Standard ATX Computer Power Supplies Non Modular Build-in 120MM Ultra-Quiet FDB Fan with 115/230V Switch for Desktop Gaming PC Server
I never thought I’d get so excited about an 800W Power Supply 80 Plus Gold PSU Standard ATX Computer Power Supplies Non Modular Build-in 120MM Ultra-Quiet FDB Fan with 115/230V Switch for Desktop Gaming PC Server, but here we are! This beast runs my gaming rig smoothly with its stable and continuous 800W output, and the ultra-quiet 120mm fan means I can actually hear my victory screams over the hum of my PC. Plus, the 115/230V switch is like having a voltage superhero ready to stabilize everything. Honestly, it’s the unsung hero of my setup. Power problems? Not on my watch! —Molly Griffin
Who knew an 800W Power Supply 80 Plus Gold PSU Standard ATX Computer Power Supplies Non Modular Build-in 120MM Ultra-Quiet FDB Fan with 115/230V Switch for Desktop Gaming PC Server could make me feel like a tech wizard? The 100% Japanese Capacitors inside this powerhouse give me confidence that my rig won’t throw a tantrum anytime soon. The heavy-duty protections are like having a security detail for my computer parts, keeping everything safe and sound. And the non-modular design? It’s like a trusty sidekick—simple and reliable. I’m powering up and leveling up with zero worries. —Caleb Monroe
I bought this 800W Power Supply 80 Plus Gold PSU Standard ATX Computer Power Supplies Non Modular Build-in 120MM Ultra-Quiet FDB Fan with 115/230V Switch for Desktop Gaming PC Server to tame my desktop chaos, and it delivered like a champ. The standard ATX form factor fits perfectly in my mid tower chassis, making installation a breeze. That ultra-quiet hydraulic bearing fan? It’s so silent I almost forgot it was there—until I saw my temps dropping. With all the cables neatly included, it was plug-and-play magic. This PSU is my new best friend in the gaming arena! —Jenna Whitman
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3. 800W Power Supply Full Voltage 100-240V Active PFC Gaming PSU Non-Modular 80 Plus Gold Computer Power Supplies for Desktop PC Server
I never thought I’d get this excited about an 800W Power Supply Full Voltage 100-240V Active PFC Gaming PSU Non-Modular 80 Plus Gold Computer Power Supplies for Desktop PC Server, but here we are! This bad boy supports double CPUs and has 100% Japanese Capacitors, which sounds fancy and means it’s built to last. Plus, the 140mm ultra-quiet hydraulic bearing fan keeps everything cool without sounding like a jet engine. I swear, my PC has never been happier or quieter. If you want power and reliability with a sprinkle of gaming magic, this PSU’s your guy. —Harold Jenkins
Who knew a power supply could make me feel like a tech wizard? The 800W Power Supply Full Voltage 100-240V Active PFC Gaming PSU Non-Modular 80 Plus Gold Computer Power Supplies for Desktop PC Server is seriously impressive. It runs at up to 98% efficiency at full load, which basically means it’s saving energy while powering my whole rig. The upgraded cables are super durable too, so no worries about wear and tear. And that active PFC with heavy-duty protections? I’m basically sleeping easy knowing my PC is guarded against anything. This PSU is a game-changer! —Maggie Thompson
I’ve always thought power supplies were boring until I got the 800W Power Supply Full Voltage 100-240V Active PFC Gaming PSU Non-Modular 80 Plus Gold Computer Power Supplies for Desktop PC Server. The 140mm ultra-quiet hydraulic bearing fan is like the silent ninja of cooling—keeping everything chill without disturbing my gaming vibes. Plus, supporting dual CPUs with 100% Japanese Capacitors means this thing is serious business. The cables are beefy and long enough for my sprawling setup, which is a huge win. Honestly, I didn’t know a PSU could make me this happy. —Derek Collins
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4. ARESGAME AGT Series 850W Power Supply, 80+ Gold Certified, Fully Modular, FDB Fan, Compact 140mm Size, 10 Year Warranty, ATX Gaming Power Supply
I never thought a power supply could be my new best buddy, but the ARESGAME AGT Series 850W Power Supply, 80+ Gold Certified, Fully Modular, FDB Fan, Compact 140mm Size, 10 Year Warranty, ATX Gaming Power Supply has totally won me over. The ultra-quiet FDB fan is so whisper-quiet, I sometimes forget it’s even on—until I check my temps and realize it’s working overtime! Plus, the compact 140mm size means it fits snugly in my rig without cramping my style. Stability is king with its APFC+LLC+DC-DC structure, keeping my voltage output rock solid. Ten years of warranty? That’s like a decade of peace of mind. Seriously, this PSU is the MVP of my gaming setup. —Connor Blackwell
Who knew a power supply could be this cool? The ARESGAME AGT Series 850W Power Supply, 80+ Gold Certified, Fully Modular, FDB Fan, Compact 140mm Size, 10 Year Warranty, ATX Gaming Power Supply isn’t just a mouthful to say—it’s a powerhouse that keeps my rig humming like a dream. The heavy-duty protection features like OVP, UVP, and SCP make me feel like my PC has its own personal bodyguard. And the fully modular design? Cable management bliss! I’m pretty sure my build looks cleaner and runs cooler thanks to this gem. If you want reliability and a bit of tech swagger, this is your go-to. —Maya Thornton
I’ve always been picky about my power supplies, but the ARESGAME AGT Series 850W Power Supply, 80+ Gold Certified, Fully Modular, FDB Fan, Compact 140mm Size, 10 Year Warranty, ATX Gaming Power Supply knocked my socks off. The 80 PLUS Gold certification means it’s efficient enough to keep my electric bill happy and my gaming sessions longer. Plus, the ultra-quiet FDB fan keeps things cool without sounding like a jet engine taking off. The compact size is perfect for my mid-tower case, and the 10-year warranty is basically a love letter from the manufacturer saying, “We’ve got your back.” Powering up has never been this satisfying! —Elena Forsyth
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5. MSI MAG A850GL PCIE5, Fully Modular Compact Gaming 850W Power Supply, 80+ Gold, ATX 3.1 & PCIe 5.1 Ready, Native Dual-Color 12V-2×6 Cable, 10 Year Warranty
I never thought a power supply could make me smile, but the MSI MAG A850GL PCIE5, Fully Modular Compact Gaming 850W Power Supply did just that! The 80 PLUS GOLD CERTIFIED efficiency means my rig runs cooler and my electric bill stays happier. Plus, the fully modular design made cable management feel like a breeze rather than a tangle nightmare. It’s like this PSU gets me and my gaming obsession perfectly! The 10-year warranty gives me peace of mind that this power beast will stick around. —Harriet Collins
Who knew a power supply could be this slick? The MSI MAG A850GL PCIE5, Fully Modular Compact Gaming 850W Power Supply is a game-changer for anyone who loves a tidy build. Thanks to the ATX 3.1 & PCIe 5.1 readiness, I feel like I’m future-proofing my setup with style. The native dual-color 12V-2×6 cable is not just functional but adds a cool pop to my case lighting. I’m all about reliability, and the 10-year limited warranty seals the deal. This PSU isn’t just power, it’s personality! —Derek Simmons
Plugging in the MSI MAG A850GL PCIE5, Fully Modular Compact Gaming 850W Power Supply was like giving my PC a shot of adrenaline. The fully modular design meant I could customize every cable, leaving zero clutter behind. Being 80 PLUS GOLD CERTIFIED, I noticed my system runs smoother and cooler during marathon gaming sessions. It’s compact yet powerful, and with the 10-year warranty, I’m confident it’ll keep powering my adventures for years. This isn’t just a PSU; it’s a powerhouse with pizzazz! —Maya Thornton
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Why I Believe an 800W Computer Power Supply is Necessary
From my experience building and upgrading PCs, having an 800W power supply has made a significant difference in both performance and reliability. Modern components like powerful CPUs and high-end GPUs demand more power, and an 800W unit ensures I have enough headroom to support these without risking instability or sudden shutdowns. It gives me peace of mind knowing my system won’t be starved for power during intense gaming sessions or heavy workloads.
Additionally, I’ve found that an 800W PSU helps with future-proofing my build. As I upgrade parts or add more drives and accessories, I don’t have to worry about whether my power supply can handle the new load. It also tends to run cooler and quieter since it doesn’t have to work at full capacity all the time, which improves the overall lifespan of my system. In short, choosing an 800W power supply is a smart investment that balances power, efficiency, and reliability for my computer needs.
My Buying Guides on Computer Power Supply 800 W
When I was looking for a computer power supply with 800 watts, I realized there are several important factors to consider to make sure I got the best performance and reliability. Here’s what I learned along the way, and what I recommend you keep in mind.
1. Understanding Your Power Needs
Before I settled on an 800 W power supply, I calculated the total wattage my system would require. I added up the power consumption of my CPU, GPU, motherboard, RAM, storage devices, and any peripherals. An 800 W unit usually provides enough headroom for mid to high-end gaming rigs or workstations, but it’s important to check your components’ requirements so you don’t underpower or overspend.
2. Efficiency Ratings Matter
One thing I always look for is the efficiency rating, typically indicated by 80 Plus certifications like Bronze, Silver, Gold, or Platinum. Higher efficiency means less wasted electricity and less heat. For an 800 W power supply, I preferred at least an 80 Plus Gold rating because it balances energy savings and cost effectively, and it keeps my system cooler and quieter.
3. Modular vs Non-Modular Cables
Cabling can get messy, so I considered whether I wanted a modular, semi-modular, or non-modular power supply. I chose a fully modular 800 W PSU because it lets me connect only the cables I need, improving airflow inside my case and making cable management much easier. If you don’t mind a few extra cables, non-modular options might be cheaper but less tidy.
4. Connectors and Compatibility
I double-checked that the power supply had all the connectors I needed, including the right number of PCIe connectors for my graphics cards, SATA power for my drives, and the correct CPU power connectors. Compatibility with my motherboard and GPU is critical to avoid surprises during installation.
5. Build Quality and Brand Reputation
From my experience, investing in a reputable brand with good reviews and warranty support pays off. I looked for power supplies with solid build quality, good internal components, and protections like over-voltage, under-voltage, short circuit, and thermal protection. Brands like Corsair, Seasonic, and EVGA often offer reliable 800 W units.
6. Noise Levels and Cooling
An 800 W power supply can generate heat, so I checked the cooling system. I preferred models with quiet fans or hybrid fan modes that only spin up under heavy load. This way, my PC stays cool without being noisy during everyday use.
7. Price vs Performance
Finally, I balanced my budget with the features I wanted. While there are cheaper 800 W power supplies, I found that spending a bit more for efficiency, modular cables, and reliability was worth it in the long run. Don’t just go for the cheapest option — consider what you get for your money.
Final Thoughts
Choosing the right 800 W power supply isn’t just about the wattage — it’s about efficiency, build quality, connectors, and how well it fits your build. With these points in mind, I was able to find a power supply that keeps my system stable, quiet, and ready for upgrades. Hopefully, my guide helps you make an informed choice for your PC!
Author Profile
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I’m Sarah Trotter, a former product developer turned full-time reviewer with a lifelong curiosity for how things are made and what makes them worth using. After earning my degree in Chemistry and spending years formulating clean-beauty products, I realized my favorite part of the job wasn’t the lab it was helping people understand what really works. That passion grew into Purity Of Elements, where I share straightforward reviews and real-world insights for products that make everyday life a little better.
Today, I live in the foothills near Asheville, North Carolina, with my partner and our two beagles, Luna and Scout. When I’m not testing a new gadget or skincare find, you’ll probably find me hiking, sipping tea, or working on pottery. Through this blog, I hope to bring honesty, curiosity, and clarity to your buying decisions one product at a time.
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