TABLE 1: Intel Itanium Processors
	Itanium (Merced)	Itanium 2 (McKinley)	Itanium 2 (Madison)
Clock frequencies	733MHz, 800 MHz	900MHz, 1GHz	1GHz, 1.3GHz, 1.4GHz, 1.5GHz
System bus path width	64 bits wide	128 bits wide	128 bits wide
System bus bandwidth	2.1GBps	6.4GBps	6.4GBps
Integer processing	Four-integer units	Six-integer units	Six-integer units
Caches	L1, 32KB (16KB instruction and 16KB data), two-clock latency	L1, 32KB (16KB instruction and 16KB data), two-clock latency	L1, 32KB (16KB instruction and 16KB data), two-clock latency
	L2, 96KB, 12-clock latency	L2, 256KB, five-clock latency	L2, 256KB, five-clock latency
	L3, 4MB external	L3, 1.5MB on 900MHz, 3MB on 1GHz	L3, 1.5MB on 1GHz or 1.4GHz, 3MB on 1.3GHz, 4MB on 1.4GHZ, 6MB on 1.5GHz
Cache Bandwidth	11.7GBps	32GBps	48GBps
Physical addressing	44-bit	50-bit	50-bit
Virtual addressing	50-bit	64-bit	64-bit
Maximum page size	256MB	4GB	4GB
Memory addressability	16TB	1PB	1PB