DC只有早期的OEM或者散装产品中有----CPU-WORLD的解释；

P不知道什么意思，只知道P后面的X代表66的前端总线，Y代表100MHZ，什么都没有没有代表盒装产品---也就是说，B开头的一般都没有这个字母；

结尾的字母和ECC有关，E表示支持ECC的盒装产品，PE表示散装或者OEM的Deschutes核心支持ECC的产品。EC表示散装或者OEM的Klamath核心支持ECC的产品。

Pentium II (SECC package) identification

1	2		3	4	5	6
B	80523	P		333	512	E
							6. ECC support
							Blank		No ECC support
							E		ECC is supported (boxed version of the Pentium II CPU)
							EC		ECC is supported (OEM/Bulk Pentium II with Klamath core)
							PE		ECC is supported (OEM/Bulk Pentium II with Deschutes core)
							5. Size of L2 cache (KB)
							256		256 KB
							512		512 KB
							4. Frequency
							200		200 MHz
							233		233 MHz
							266		266 MHz
							300		300 MHz
							350		350 MHz
							400		400 MHz
							450		450 MHz
							3. Bus frequency
							Blank		Boxed Pentium II processors don't have bus frequency identifier
							X		66 Mhz bus
							Y		100 MHz bus
							2. Processor core
							80522		Klamath core (0.35 micron)
							80523		Deschutes core (0.25 micron)
							1. OEM/Retail version
							Blank		OEM/bulk version
							B		Boxed version
							DC		OEM/bulk version. "DC" was used only for early Pentium II CPUs.