Modern Standby is an upcoming feature for Windows 10 that vastly improves your PC's sleep and wake functionality. The technology allows your system to wake from sleep more than twice as fast, as well as maintain a network connection during sleep to continue downloading updates and receive emails and notifications - just like your phone. Best of all, it does this with less overall power consumption. The RM Series delivers power at up to 90% efficiency, lowering energy consumption, noise, temperatures, and your power bill. Using industrial-grade electrolytic capacitors, RM Series power supplies offer the unwavering power and long-term reliability you demand from a CORSAIR power supply. The RM Series' cooling fan doesn't spin until you need it, for near-silent operation at low and medium loads. A 135mm rifle bearing fan with a specially calculated fan curve ensures that fan noise is kept to a minimum, even at full load. When at low and medium loads, the fan stops spinning entirely until it's needed, resulting in virtually silent operation.
Modern Standby is an upcoming feature for Windows 10 that vastly improves your PC's sleep and wake functionality. The technology allows your system to wake from sleep more than twice as fast, as well as maintain a network connection during sleep to continue downloading updates and receive emails and notifications - just like your phone. Best of all, it does this with less overall power consumption. The RM Series delivers power at up to 90% efficiency, lowering energy consumption, noise, temperatures, and your power bill. Using industrial-grade electrolytic capacitors, RM Series power supplies offer the unwavering power and long-term reliability you demand from a CORSAIR power supply. The RM Series' cooling fan doesn't spin until you need it, for near-silent operation at low and medium loads. A 135mm rifle bearing fan with a specially calculated fan curve ensures that fan noise is kept to a minimum, even at full load. When at low and medium loads, the fan stops spinning entirely until it's needed, resulting in virtually silent operation.
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last seen 18 Dec 2025
The lowest price we last saw for Corsair RM850 2021 850W 80+ Gold Fully Modular Power Supply was $199.00 (last seen 18 Dec 2025). Prices may have changed since.
The all-time low we recorded was $175.00 on 15 Aug 2023.
Prices last updated 18 Dec 2025.
Corsair RM850 2021 850W 80+ Gold Fully Modular Power Supply
Modern Standby is an upcoming feature for Windows 10 that vastly improves your PC's sleep and wake functionality. The technology allows your system to wake from sleep more than twice as fast, as well as maintain a network connection during sleep to continue downloading updates and receive emails and notifications - just like your phone. Best of all, it does this with less overall power consumption. The RM Series delivers power at up to 90% efficiency, lowering energy consumption, noise, temperatures, and your power bill. Using industrial-grade electrolytic capacitors, RM Series power supplies offer the unwavering power and long-term reliability you demand from a CORSAIR power supply. The RM Series' cooling fan doesn't spin until you need it, for near-silent operation at low and medium loads. A 135mm rifle bearing fan with a specially calculated fan curve ensures that fan noise is kept to a minimum, even at full load. When at low and medium loads, the fan stops spinning entirely until it's needed, resulting in virtually silent operation.
Modern Standby is an upcoming feature for Windows 10 that vastly improves your PC's sleep and wake functionality. The technology allows your system to wake from sleep more than twice as fast, as well as maintain a network connection during sleep to continue downloading updates and receive emails and notifications - just like your phone. Best of all, it does this with less overall power consumption. The RM Series delivers power at up to 90% efficiency, lowering energy consumption, noise, temperatures, and your power bill. Using industrial-grade electrolytic capacitors, RM Series power supplies offer the unwavering power and long-term reliability you demand from a CORSAIR power supply. The RM Series' cooling fan doesn't spin until you need it, for near-silent operation at low and medium loads. A 135mm rifle bearing fan with a specially calculated fan curve ensures that fan noise is kept to a minimum, even at full load. When at low and medium loads, the fan stops spinning entirely until it's needed, resulting in virtually silent operation.
Last updated at 18/12/2025 17:38:48
| General | |
| Device Type | Power supply - internal |
| Specification Compliance | ATX12V 2.4/ EPS12V 2.92 |
| PSU Form Factor | ATX |
| Colour | Black |
| General | |
| Device Type | Power supply - internal |
| Specification Compliance | ATX12V 2.4/ EPS12V 2.92 |
| PSU Form Factor | ATX |
| Colour | Black |
