Tacticle Cube
From STNE Wiki
This Cube is a stronger, and more armoured, and armed variant of the cube. Though the Fusion cube is ultimately the strong point of the borg, do not under-estimate these killing machines. With high damaging weapon systems, Very high hull, high armour these ships are formidable. Even a task force of 3 iowas cannot stem the power of a Tactical cube. Albeit, these ships do have low shields. But neverless, the hull compenscates.
Suggested Statistics from previous expeditions against borg tactical cubes: 30-60x40 Disruptor 30-60x20 Phaser 7500-15000 Hull 500-1000 Shields 6-9 Armour
Some lower variants have been spotted (Variants for RP battles, and these are almost used as the settings in such battles:)
20x15 Disruptor
20x10 Phaser
7500-15000 hull
500-1000 shields
6-9 Armour
As you can see the low power variant has decreased weapons significantly, however it still has its high hull, shields and armour. although still a hard target, perhaps 2 or 3 Iowas could take this down.