| Product name | Rosewill PHOTON-550 | Antec Earthwatts Gold Pro Series EA550G Pro | COOLMAX ZU Series ZU-700B |
| Popularity | 80 | 80 | 80 |
| Rating | | |  61 |
| Shopineer score | 78 | 78 |  72 |
| Price | $77.99 |  $72.00 | $72.78 |
| Brand | Rosewill | Antec | COOLMAX |
| Type | ATX12V v2.31 & EPS12V v2.92 | ATX12V V2.4 | ATX 12V v2.31 / EPS12V v2.91 |
| Maximum Power | 550W | 550W | 700W |
| Fans | 1 x Silent 135mm Auto Speed Control fan | 120mm silence fan | 1 |
| PFC | Active | Active | Active |
| Main Connector | 20+4Pin | 24Pin | 20+4Pin |
| +12V Rails | Single | Single | Single |
| PCI-Express Connector | 2 x 6+2-Pin | 2 x 6+2-Pin | 1 x 6-Pin, 1 x 6+2-Pin |
| SATA Power Connector | | 5 | 5 |
| SLI | Yes | | SLI Ready |
| Haswell Support | | | Yes |
| CrossFire | Yes | | CrossFire Ready |
| Modular | Yes | Hybrid Modular | Modular |
| Energy-Efficient | 80 PLUS GOLD Certified | 80 PLUS GOLD Certified | 80 PLUS BRONZE Certified |
| Over Voltage Protection | +3.3V, +5V, +12V | Yes | Yes |
| Input Voltage | 100 - 240 V | 100 - 240 V | 115V ~ 230V |
| Input Frequency Range | 50/60 Hz | 50/60 Hz | |
| Input Current | 8 A | 8A - 4A | |
| Output | +3.3V@20A, +5V@20A, +12V@45.9A, -12V@0.3A, +5VSB@3A | +3.3V@20A, +5V@20A, +12V@42A, -12V@0.5A, +5VSB@3A | +5V@25A, +3.3V@25A, +12V@59A, -12V@0.8A, +5VSB@3A |
| MTBF | 100k hours at 25 degree C, max. load, nominal input | | |
| Approvals | TUV, CE, FCC, ROHS | cTUVus, CB, CE, FCC, T | |
| Dimensions | 3.39 x 5.91 x 6.30 | 3.40 x 5.50 x 5.90 | 6.5 x 5.9 x 3.3 |
| Weight | 6.1 lbs. | 4.27 lbs. | 3.96 lbs. |
| Connectors | Modular Cable:1 x 20+4-Pin Main Connector 1 x 4+4-Pin ATX12V/EPS12V Connector2 x 6+2-Pin PCI-E Connector6 x 5-Pin SATA Connector 3 x 4-Pin Peripheral Connector1 x 4-Pin Floppy Connector | 1 x 24-pin1 x 8(4+4)-pin ATX12V/EPS122 x 8(6+2)-pin PCI-E5 x Mole5 x SATA 1x Floppy | 1 x 20+4-pin Main Connector5 x SATA5 x Peripheral1 x 4+4-pin1 x FDD1 x 6-pin PCI-E1 x 6+2-pin PCI-E |
