SilverStone Extreme 850R SFX Review

SilverStone’s Extreme 850R Platinum is 850W SFX power supply ft. latest ATX 3.0 standards, including SFX12V 4.0 & PCIe 5.0. The Extreme 850R is priced at MSRP US$269.99 and available on Amazon.

SPECS

MODELSST-EX850R-PM
FORM FACTORSFX
CERTIFICATIONPlatinum (Cybenetics)
DIMENSIONS100 x 125 x 63.5mm (L x W x H)
RATING850W continues power output
OPERATING TEMPERATURE 0°C ~ 50°C
SAFETY Over Current Protection
Over Power Protection (130~170%)
Over Voltage Protection
Short Circuit Protection
Over Temperature Protection
COOLING92mm Fluid Dynamic Bearing Fan
NOISE 35~40dBA at 850W Load (Semi-Passive upto 200W)
CONNECTIONS1x 24-PIN
2x 8-PIN EPS
1x 12+4-PIN 12VHPWR
1x 8-PIN PCIe
3x 6-PIN Peripheral / SATA
CABLES1x 24 / 20-PIN (300mm),
2x 8 / 4-PIN EPS (400mm),
1x 12+4-PIN 12VHPWR (400mm),
Dual 8 / 6-PIN PCIe (400, 500mm),
8x SATA,
3x 4-PIN Peripheral (300mm),
1x 4-PIN Floppy (100mm)
C13 Power Cord (not included)
MODULARY

BOX CONTENTS

NOISE

SilverStone’s Extreme 850R is noticable quieter in the 600~800W range vs. the best last-gen SFX power supply: Corsair SF750. More on that soon…

REVIEW

SilverStone currently has the best 850W SFX power supply available with platinum rating, quiet operation and ATX 3.0 compatability.

The 850R 12VHPWR cable is limited to 450W. 1000W is the recommended minimum requirement to deliver full 600W 12VHPWR connection as recommended by SilverStone & CableMod.

850R SFX includes 2x individual 8-PIN ESP cables, we would have preferenced 2x individual 8-PIN PCIe cables out of the box instead. Thankfully, the 2nd EPS connection can be used for PCIe, but requires sourcing an additional compatabile PCIe cable, if your GPU requires 3x 8-PIN’s.

We suggest CableMod’s configurator for custom cables. Its worth noting that the 850R SFX does not use the same cable pinout as the SX1000 for those with existing cables.


COMMENTS