I can't imagine getting to GPL 52 with only 2 rooms. How long would that take even with 100% power processing up time?
Assuming a shard with 3-second ticks and a sufficient supply of power:
Total power = 52521000 = 2704000
Ticks = 2704000/2 = 1352000 (2 power units per tick, since you have 2 rooms)
That's just under 47 days on a shard with 3-second ticks.