Will this PSU fit into a compact or small form factor PC case?

Yes, this PSU is designed with a compact build, featuring a chassis size of 140×150×86mm for flexible small-form-factor integration.

What is the warranty period for this power supply unit?

The warranty period for this power supply unit is 5 years.

Is this power supply unit compatible with my ATX 3.0 motherboard?

Yes, this power supply unit is compatible with ATX 3.0.

How does this PSU ensure the safety of my computer system?

The PSU ensures the safety of your computer system through its six-protection suite, which includes OCP (Over Current Protection), OPP (Over Power Protection), OTP (Over Temperature Protection), OVP (Over Voltage Protection), SCP (Short Circuit Protection), and UCP (Under Current Protection).

Can this power supply handle high-end, power-hungry graphic cards?

Yes, this power supply supports high-end, power-hungry graphics cards as it features a dedicated PCIe 5.1 cable delivering 600W direct power to new graphics cards.

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Main image of 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 - VSB850

Alt view image 2 of 12 - 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 - VSB850

Alt view image 3 of 12 - 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 - VSB850

Alt view image 4 of 12 - 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 - VSB850

Alt view image 5 of 12 - 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 - VSB850

Alt view image 6 of 12 - 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 - VSB850

Alt view image 7 of 12 - 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 - VSB850

Alt view image 8 of 12 - 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 - VSB850

Alt view image 9 of 12 - 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 - VSB850

Alt view image 10 of 12 - 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 - VSB850

Alt view image 11 of 12 - 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 - VSB850

Alt view image 12 of 12 - 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 - VSB850

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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 - VSB850

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Options: ATX 3.1 80+ Bronze (850W)

ATX 3.1 80+ Bronze (650W)
ATX 3.1 80+ Bronze (750W)
ATX 3.1 80+ Bronze (850W)

Intel ATX 3.0 & 3.1 Ready.
Semi Modular 80 PLUS® Bronze Certified.
Native PCIe 5.1 / Gen 5 12+4 Pin 12V-2x6 Cable.
Up to 235% Power Excursion & 300% GPU Power Excursion.
Optimized Thermal Control: Steel shell with large vents and ICB fan enhance cooling performance.
Next-Gen GPU Support: Dedicated PCIe 5.1 cable delivers 600W direct power to new graphics cards.
Compact Build Ready: 140×150×86mm chassis (35% smaller) enables flexible small-form-factor integration.
Safety Shield: Six-protection suite (OCP/OPP/OTP/OVP/SCP/UCP) ensures complete system security.

🔥Don't forget your OS, we have Windows 11 OEM, Download and USB versions available

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Overview

Specs

Reviews (9)

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General
Brand	Rosewill
Model	VSB850

Details
Type	ATX 3.1 Compatible
Maximum Power	850 W
Fans	1 x 120 mm
PFC	Active
Main Connector	20+4Pin
+12V Rails	Single
SATA Power Connector	6
CrossFire	CrossFire Ready
Max PSU Length	140 mm
Modular	Semi-Modular
Hold-up Time	16ms min.
Efficiency	Up to 85%
Energy-Efficient	80 PLUS BRONZE Certified
Over Voltage Protection	Yes
Overload Protection	Yes
Output	+3.3V@18A, +5V@18A, [email protected], [email protected], +5VSB@3A
Connectors	1 x 20+4-Pin Main Connector 2 x 4+4-Pin ATX12V / EPS12V Connector 2 x 6+2-Pin PCI-E Connector 1 x 12+4-Pin 12V-2x6 Connector 6 x 15-Pin SATA Connector 3 x 4-Pin Peripheral Connector

Additional Information
First Listed on Newegg	May 30, 2025

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Limited Warranty period (parts): 1 year
Limited Warranty period (labor): 1 year
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Best Sellers

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 - VSB850

Learn more about the Rosewill VSB850

Customer Reviews of the Rosewill VSB850

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info

Item#: N82E16817182466

Best Sellers

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 - VSB850

Learn more about the Rosewill VSB850

Customer Reviews of the Rosewill VSB850

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info