| Product name | SeaSonic PRIME Ultra Series SSR-850TR | Cisco Systems, Inc. PWR-C2-250WAC= | SeaSonic PRIME Ultra Series SSR-750TR |
| Popularity | 80 | 80 | 80 |
| Rating | | | |
| Shopineer score | 78 | 78 | 78 |
| Price | $230.99 |  $210.00 | $188.99 |
| Brand | SeaSonic | Cisco Systems, Inc. | SeaSonic |
| Type | ATX12V / EPS12V | | ATX12V / EPS12V |
| Maximum Power | 850W | | 750W |
| Fans | 135mm Fluid Dynamic Bearing Fan w/ Hybrid Fan ControlFan Control | | 135mm Fluid Dynamic Bearing Fan w/ Hybrid Fan Control |
| PFC | Active | | Active |
| Main Connector | 20+4Pin | | 20+4Pin |
| +12V Rails | Single | | Single |
| PCI-Express Connector | 6 x 6+2-Pin | | 4 x 6+2-Pin |
| SATA Power Connector | 10 | | 10 |
| SLI | | | |
| Haswell Support | | | |
| CrossFire | | | |
| Modular | Full Modular | | Full Modular |
| Energy-Efficient | 80 PLUS TITANIUM Certified | | 80 PLUS TITANIUM Certified |
| Over Voltage Protection | Yes | | Yes |
| Input Voltage | 100 - 240 V | | 100 - 240 V |
| Input Frequency Range | 50/60 Hz | | 50/60 Hz |
| Input Current | 11 - 5.5 A | | 9.5 - 4.5 A |
| Output | +3.3V@20A, +5V@20A, +12V@70A, -12V@0.3A, +5VSB@3A | | +3.3V@20A, +5V@20A, +12V@62A, -12V@0.3A, +5VSB@3A |
| MTBF | 150,000 Hours MTBF at 25 degree centigrade, excl. fan: 150,000 h | | 150,000 hours MTBF @ 25 degree C, excl. fan |
| Approvals | Safety and EMC: cTUVus, TUV, CB, CCC, BSMI, EAC Environmental Compliance: Energy Star, RoHS, WEEE, ErP Lot 6, REACH | | Safety and EMC: cTUVus, TUV, CB, CCC, BSMI, EACEnvironmental Compliance: Energy Star, RoHS, WEEE, ErP Lot 6, REACH |
| Dimensions | 3.39 x 5.91 x 6.70 | | 3.39 x 5.91 x 6.69 |
| Weight | 9.2 lbs. | | 8.1 lbs. |
| Connectors | 1 x Main Power 24/20 pins2 x CPU 4/8 Pin6 x PCI-E 6/8 Pin10 x SATA5 x Peripheral1 x FDD | | 1 x Main Power (20/24 pins)2 x CPU (4/8 pins) 4 x PCIe (6/8 Pins)10 x SATA5 x Peripheral1 x Floppy |
