CPU architecture is the layout of the cpu, it is its design -- where the cores, caches, etc are placed inside the cpu. Yes, it is important when buying a PC.
Ad. In some patients who suffer from frequent sinus infections or inflamed tonsils, fluid can become trapped and form into a 'pocket.' This sac then becomes a tonsil cyst. Under most circumstances, the doctor might decide to remove the cyst, unless it shows signs of draining on its own.
A cyst is a structure or mass that consists of a cellular lined sac. It is typically filled with fluid but may be filled with solid material. It can be congenital, traumatic, or acquired. They may develop nearly anywhere in the body and usually require complete excision for eradication or they are likely to recur.