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.
Spinal Cysts. A cyst is a fluid-filled sac that can develop in the spine as a result of degeneration and can lead to spinal stenosis or other painful, serious conditions. There are several different types of cysts that may develop within the spinal cord, although synovial cysts are most common. Synovial cysts develop within the facet joints as cartilage wears away and excess fluid is produced within the joint. The excess fluid is retained within synovium of the joint and forms a cyst.