| Mammoth 8 Bar | Fluence SPYDER 2i | HLG 550 V2 | Gavita 1650 E | |
| Diodes | LM301B | - | LM301B | - |
| LED pcs | 1728 | - | 1152 | - |
| Dimensions | 47"x42"x4.5" | 43"x47"x4.3" | 26"X20"x3" | 40"x40"x2" |
| Wattage | 640 | 630 | 480 | 646 |
| PPF µmol/s | 1720 | 1700 | 1178 | 1650 |
| PPF/Watt | 2.7 | 2.7 | 2.5 | 2.6 |
| PPF/$ | 1.78 | 1.13 | 1.12 | 1.18 |
| MSRP | $969 | $1,500 | $1,049 | $1,399 |
| Savings vs. | - | $531 | $80 | $430 |