There are many type fluorescent tubes from different manufactures. Below we just take several comparison samples.

Generally speaking, compared with old generation of T8 halogen fluorescent tube, the SparTube can save about 50% enegay and issues similar intensity of illumination.
Compared with new tri-band fluorescent T8 tubes, depending on the real power of SparTube (it could be specified by customers), SpartTube can save about 30% energy and issues less or equivalent illumination.

There are many types of fluorescent tubes in market. Above assertions are just offered as references without guarantee.