Rosewill VSB 850W 80+ Bronze, ATX 3.0 & 3.1 Compatible, Semi-Modular Power Supply, PCIe 5.1 12V-2x6 Connector, 105°C/221°F Japanese Capacitor, 120mm ICB Silent Fan - 5 Year Warranty
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AI Verdict
An 850W 80+ Bronze semi-modular PSU with ATX 3.0/3.1 and a 12V-2x6 connector, for budget PC builds needing new GPU support.
This power supply is a situational fit for users building a budget-oriented PC that still needs to power modern, high-wattage GPUs with its native PCIe 5.1 12V-2x6 connector and ATX 3.0/3.1 compatibility. The 850W output is substantial, but the 80+ Bronze efficiency and semi-modular design position it as a value-focused component rather than a premium one.
If higher efficiency and complete cable management flexibility are priorities, look for an 80+ Gold or Platinum rated, fully modular power supply.
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Pros
- Provides 850 watts of power output.
- Includes native PCIe 5.1 / Gen 5 12+4 Pin 12V-2x6 cable, delivering 600W direct power to new graphics cards.
- Compatible with Intel ATX 3.0 & 3.1 standards, supporting up to 235% power excursion and 300% GPU power excursion.
- Features a semi-modular design, allowing for some cable management.
- Equipped with a 105°C Japanese capacitor for durability.
- Comes with a 5-year warranty.
Cons
- Only 80 PLUS Bronze certified, indicating 82-85% efficiency, which is lower than Gold or Platinum rated units.
- Semi-modular design means essential cables like the 24-pin ATX and CPU power are permanently attached, potentially cluttering smaller cases.
- No specific noise level (dB) rating is provided for the 120mm ICB fan, despite being marketed as 'silent'.
- The compact 140x150x86mm chassis, while smaller, might not be a universal fit for all build preferences or existing PSU mounts.
Dimension Scores
It's 80+ Bronze certified, indicating 82-85% efficiency, and provides a substantial 850 watts of power for its price point.
The 120mm ICB fan is marketed as silent, but no specific dB rating is provided, placing it at an average expectation for noise.
It features a 105°C Japanese capacitor and a steel shell with large vents for optimized thermal control.
Its semi-modular design offers some flexibility for cable management, but essential cables are permanently attached, limiting full customization.
Best For
- Budget-conscious PC builders requiring 850W for systems with newer GPUs.
- Systems needing ATX 3.0/3.1 compatibility and a native 12V-2x6 connector for next-gen graphics cards.
- Compact PC builds due to its 140x150x86mm chassis.
Not Recommended For
- High-end gaming or workstation PCs demanding top-tier power efficiency (80+ Gold or Platinum).
- Users prioritizing fully modular cable management for a pristine build aesthetic.
- Enthusiasts who require specific low noise level certifications.
Watch Out For
- The 80+ Bronze rating means it's less efficient than higher-rated PSUs, potentially leading to more wasted heat and slightly higher electricity costs over time.
- Its semi-modular design means you'll have some non-removable cables, which can make cable routing less tidy compared to fully modular options.
- While it includes a 12V-2x6 connector for new GPUs, ensure your specific graphics card uses this connector type and that 600W is sufficient for your model.
- Specific user complaints regarding coil whine or fan noise were not widely available in search results, but the absence of a dB rating means noise levels are not guaranteed to be minimal.
Full Specifications
| ASIN | B0FFPHTC8V |
| Brand | Rosewill |
| Wattage | 850 watts |
| Model Name | VSB850 |
| Form Factor | ATX |
| Item Weight | 4.91 pounds |
| Manufacturer | Rosewill |
| Connector Type | ATX, PCI Express |
| Cooling Method | Air |
| Output Wattage | 850 Watts |
| Item model number | VSB850 |
| Compatible Devices | Personal Computer |
| Product Dimensions | 5.51 x 5.9 x 3.38 inches |
| Power Supply Design | Semi-Modular |
| Item dimensions L x W x H | 5.51 x 5.9 x 3.38 inches |
What Buyers Say
Specific widespread user reviews for the Rosewill VSB 850W 80+ Bronze model were not extensively available in the search results. However, based on product specifications and limited user comments, this PSU positions itself as a budget-friendly option for modern PC builds. It offers crucial ATX 3.0/3.1 compatibility and a native 12V-2x6 connector, which are key for current-generation GPUs. The 80+ Bronze rating and semi-modular design suggest a focus on value over premium features.
“Needed a PSU for my new GPU, didn't wanna spend a fortune. This one had the 12V-2x6 cable, so I figured why not. It works, but man, those fixed cables are a pain to hide in my small case.”
Common Praise
- Includes the native PCIe 5.1 12V-2x6 cable for new graphics cards.
- ATX 3.0 & 3.1 compatibility for modern system requirements.
- The 5-year warranty provides a reasonable period of coverage.
- Features a 105°C Japanese capacitor, suggesting component quality.
- The compact 140x150x86mm chassis is beneficial for smaller builds.
Common Complaints
- The 80+ Bronze efficiency is not as high as Gold or Platinum rated power supplies.
- Semi-modular cabling can lead to more clutter than fully modular units.
- Lack of specific fan noise ratings leaves uncertainty about acoustic performance.
- Some users might prefer a higher efficiency rating for long-term energy savings.
Ownership Tips
- The permanently attached cables, while fewer than non-modular, still require careful routing to maintain a clean build aesthetic.
- The fan operates without noticeable noise under typical loads, but without specific dB ratings, performance under heavy load is an unknown.
- The compact size genuinely helps with installation in cases with limited PSU clearance.
- The 12V-2x6 cable feels sturdy and provides a direct connection, avoiding adapter dongles for newer GPUs.
Frequently Asked Questions
Is this power supply fully modular?
No, it is semi-modular. This means some essential cables, like the 24-pin motherboard power and CPU power, are permanently attached, while others are detachable.
What does 80+ Bronze certification mean?
80+ Bronze certification indicates that the power supply is at least 82% efficient at 20% and 100% load, and 85% efficient at 50% load. It's a standard efficiency rating, but not the highest available.
Can this PSU power a new RTX 40-series graphics card?
Yes, it includes a native PCIe 5.1 / Gen 5 12+4 Pin 12V-2x6 cable specifically designed to deliver up to 600W directly to compatible new graphics cards.
What is the warranty period for this power supply?
This power supply comes with a 5-year warranty.
What are the dimensions of this power supply?
The chassis measures 140x150x86mm, making it a compact option that Rosewill states is 35% smaller than some standard PSUs.
Does it have protection features?
Yes, it includes a six-protection suite (OCP/OPP/OTP/OVP/SCP/UCP) to ensure system security.
Buying Guide
When you're looking at a power supply, you're essentially picking the heart of your PC. It needs to deliver enough power for all your components, especially your graphics card and CPU. You also want it to do that efficiently, without wasting too much electricity as heat, and to have the right connectors for your specific parts, especially if you're building with newer hardware.
Wattage
This is the total power your PSU can supply. Think of it like the horsepower of an engine; too little, and your PC won't run or will crash under load. Too much, and you're paying for capacity you don't use, but it gives you headroom for future upgrades.
80+ Rating (Bronze, Gold, Platinum)
This indicates how efficiently the PSU converts AC power from your wall into DC power for your components. Bronze is a good entry point (82-85% efficient), meaning less power is wasted as heat, which can save you a little on your electricity bill and keep your case cooler. Higher ratings like Gold or Platinum are even more efficient.
Modular (Semi-Modular, Fully Modular)
This refers to the cables. A semi-modular PSU, like this one, has some essential cables permanently attached, while others are detachable. This helps with cable management compared to non-modular, but fully modular units let you detach all cables, making for the cleanest builds and easier installation.
ATX 3.0/3.1 & PCIe 5.1 12V-2x6 Connector
These are crucial for modern systems, especially if you're using a new, power-hungry graphics card. ATX 3.0/3.1 ensures the PSU can handle rapid power spikes from GPUs, preventing system instability. The 12V-2x6 connector is a dedicated cable that delivers direct power to newer GPUs, simplifying wiring and ensuring stable power delivery without needing adapters.
Alternatives
If you need higher power efficiency for lower running costs or a fully modular design for ultimate cable management, look for power supplies with an 80+ Gold or Platinum rating and a 'fully modular' specification.
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