The Reinforced variant let you build Turbines as big as you need or want, to generate extreme amounts of energy.
The maximum size, up to 256 blocks, can be set by players, mod packs makers or server admins in the config file of Extreme Reactors.
Basic Turbines can use up to 2000 mB/t of vapor to spin their Rotor.
Reinforced Turbines offer superior structural integrity but come at a higher crafting cost and are not as efficient as other variants. However, their superior generation capacity more than compensates for these drawbacks.