Can you provide more information on the efficiency rating and what "90% Efficiency" specifically refers to in real-world usage?

The product has a 90% efficiency rating, which indicates that it converts 90% of the input power into usable output power, minimizing energy loss.

Is this power supply compatible with the latest NVIDIA RTX graphics cards for SLI setups?

Yes, this power supply is NVIDIA SLI supported, which indicates compatibility with SLI setups for NVIDIA graphics cards.

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Main image of MSI MAG 850W Power Supply - Internal - 120 V AC, 230 V AC Input - 5 V DC, 3.3 V DC, 12 V DC, -12 V DC, 5 V SB Output - 850 W - Active PFC - 1 +12V Rails - 1 Fan(s) - NVIDIA SLI Supported - 90% Efficie

Alt view image 2 of 7 - MSI MAG 850W Power Supply - Internal - 120 V AC, 230 V AC Input - 5 V DC, 3.3 V DC, 12 V DC, -12 V DC, 5 V SB Output - 850 W - Active PFC - 1 +12V Rails - 1 Fan(s) - NVIDIA SLI Supported - 90% Efficie

Alt view image 3 of 7 - MSI MAG 850W Power Supply - Internal - 120 V AC, 230 V AC Input - 5 V DC, 3.3 V DC, 12 V DC, -12 V DC, 5 V SB Output - 850 W - Active PFC - 1 +12V Rails - 1 Fan(s) - NVIDIA SLI Supported - 90% Efficie

Alt view image 4 of 7 - MSI MAG 850W Power Supply - Internal - 120 V AC, 230 V AC Input - 5 V DC, 3.3 V DC, 12 V DC, -12 V DC, 5 V SB Output - 850 W - Active PFC - 1 +12V Rails - 1 Fan(s) - NVIDIA SLI Supported - 90% Efficie

Alt view image 5 of 7 - MSI MAG 850W Power Supply - Internal - 120 V AC, 230 V AC Input - 5 V DC, 3.3 V DC, 12 V DC, -12 V DC, 5 V SB Output - 850 W - Active PFC - 1 +12V Rails - 1 Fan(s) - NVIDIA SLI Supported - 90% Efficie

Alt view image 6 of 7 - MSI MAG 850W Power Supply - Internal - 120 V AC, 230 V AC Input - 5 V DC, 3.3 V DC, 12 V DC, -12 V DC, 5 V SB Output - 850 W - Active PFC - 1 +12V Rails - 1 Fan(s) - NVIDIA SLI Supported - 90% Efficie

Alt view image 7 of 7 - MSI MAG 850W Power Supply - Internal - 120 V AC, 230 V AC Input - 5 V DC, 3.3 V DC, 12 V DC, -12 V DC, 5 V SB Output - 850 W - Active PFC - 1 +12V Rails - 1 Fan(s) - NVIDIA SLI Supported - 90% Efficie

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MSI MAG 850W Power Supply - Internal - 120 V AC, 230 V AC Input - 5 V DC, 3.3 V DC, 12 V DC, -12 V DC, 5 V SB Output - 850 W - Active PFC - 1 +12V Rails - 1 Fan(s) - NVIDIA SLI Supported - 90% Efficie

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Internal
120 V AC, 230 V AC Input
5 V DC, 3.3 V DC, 12 V DC, -12 V DC, 5 V SB Output
850 W
Active PFC
1 +12V Rails
1 Fan(s)
NVIDIA SLI Supported
90% Efficiency

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MSI MAG 850W Power Supply Internal - 120 V AC, 230 V AC Input - 5 V DC, 3.3 V DC, 12 V DC, -12 V DC, 5 V SB Output - 850 W - Active PFC - 1 +12V Rails - PCI Express Connector - 1 Fan (s) - NVIDIA SLI Supported - 90% Efficiency

General
Brand	MSI

Details
Type	ATX

Additional Information
First Listed on Newegg	May 13, 2026

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