In our initial conversations with Zalman representatives about the Reserator 1, FrostyTech was informed that one of the original design intentions of the Reserator 1 cooling system was that the units be stackable. This is why there are four screw posts integrated into the fin structure of the large cooling tower. These posts would on later revisions be left untapped, as it became unfeasible for consumers to purchase two Reserator units for stacking.

The cap saw a few design changes, including the addition of this small badge.

At the next event that FrostyTech met up with Zalman to view the companies products, it was clear that many small changes had occurred with the Reserator 1's overall design. The stacking idea had been retired, and the four screw posts left as is. The threads on the cooling tower cap were coarser to make installation quicker (less turning) and less problematic (no chance of crossed threads), an emblem was embedded in the side of the cap and laser etching used to mark the product specs up top.

Version two of the Reserator 1 water cooling system. Quite a few small adjustments had been made since the original prototype unit was unveiled.

The hoses for the reserator system were replaced with a blue material of slightly larger diameter and better kink-resistance. The water block design was also modified slightly.

A new pass-through extruded aluminum GPU block briefly saw use with the Reserator 1, but would later be retired in favour of better performing designs.

The first attempt at a flow meter for the Reserator 1.

Among the assortment of minor changes done to the Zalman Reserator 1 cooling system, a flow meter was also added. The flowmeter shown above would later be revised once again as some of the compression fittings used were prone to leaks if not installed correctly by the end user.