CPU Specifications

CPU Specifications

Intel processors:

Processor	Speed (MHz or GHz)	L1 Cache	L2 Cache	L3 Cache	System Bus Speed (MHz)
Pentium	60 to 200 MHz	16K	None	None	66
Pentium MMX	133 to 266 MHz	32K	None	None	66
Pentium Pro	150 to 200 MHz	16K	256K, 512K, 1 MB	None	60, 66
Pentium II	233 to 450 MHz	32K	256K, 512K	None	66, 100
Celeron	850 MHz to 1.8 GHz	32K or Execution Trace Cache	128K or 256K Advanced Transfer Cache	None	Up to 400
Pentium II Xeon	400 or 500 MHz	32K	512K, 1 MB, or 2 MB	None	100
Pentium III	450 MHz to 1.33 GHz	32K	512K unified, non-blocking cache or 256K Advanced Transfer Cache	None	100, 133
Pentium III Xeon	600 MHz or 1 GHz	32K	256K, 1 MB, or 2 MB Advanced Transfer Cache	None	100 or 133
Xeon MP	1.4 GHz to 1.6 GHz	Execution Trace Cache	265K L2 Cache with 512K or 1 MB L3 Cache	1 MB	400
Xeon DP	1.8 GHz to 2.4 GHz	Execution Trace Cache	256K or 512K Advanced Transfer Cache	None	400
Pentium 4	1.4 GHz to 2.8 GHz	Execution Trace Cache	256K or 512K Advanced Transfer Cache	None	400 or 533
Itanium	733 MHz and 800 MHz	32K	96K	2 MB or 4 MB	266
Itanium 2	900 MHz to 1 GHz	32K	256K	1.5 MB or 3 MB	400

Competing chips:

Processor	Speed (MHz)	Compares to	System Bus Speed (MHz)	Socket of Slot
Cyrix M II	300, 333, 350	Pentium II, Celeron	66, 75, 83, 95, 100	Socket 7
Cyrix III	433 to 533	Celeron, Pentium III	66, 100, 133	Socket 370
VIA C3	Up to 1 GHz	Celeron	100 or 133	Socket 370
AMD-K6-2	166 to 475	Pentium II, Celeron	66, 95, 100	Socket 7 or Super Socket 7
AMD-K6-III	350 to 450	Pentium II	100	Super Socket 7
AMD Athlon	Up to 1.9 GHz	Pentium III	200	Slot A or Socket A
AMD Duron	1 GHz to 1.3 GHz	Celeron	200	Socket A
AMD Athlon MP	1.4 GHz to 1.8 GHz	Pentium III	200 to 400+	OPGA

CPU sockets and slots:

Connector	CPU	Number of Pins	Voltage
Socket 4	Pentium 60/66	273 Pins 21x21 PGA grid	5 V
Socket 5	Pentium 75 to 133	320 pins 37x37 SPGA grid	3.3 V
Socket 6	Not Used	235 pins 19x19 PGA grid	3.3 V
Socket 7	Pentium MMX, AMD KS, Cyrix M	321 pins 37x37 SPGA grid	2.5 V to 3.3 V
Super Socket 7	AMD KS-2, AMD KS-III	321 pins 37x37 SPGA grid	2.5 V to 3.3 V
Socket 8	Pentium Pro	387 pins 24x26 SPGA grid	3.3 V
Socket 370 or PGA370 Socket	Pentium III FC-PGA, Celeron PPGA, Cyrix III	370 pins 37x37 SPGA grid	1.5 V or 2 V
Slot 1 or SC242	Pentium II, Celeron, Pentium III	242 pins in 2 rows, rectangular shape	2.8 V and 3.3 V
Slot A	AMD Athlon	242 pins in 2 rows, rectangular shape	1.3 V to 2.05 V
Socket A or Socket 462	AMD Athlon and Duron	462 pins, SPGA grid, rectangular shape	1.1 V to 1.85 V
Slot 2 or SC330	Pentium II Xeon, Pentium III Xeon	330 pins in 2 rows, rectangular shape	1.5 V to 3.5 V
Socket 423	Pentium 4	423 pins 39x39 SPGA grid	1.7 V to 1.75 V
Socket 478	Pentium 4	478 pins in a dense micro PGA (mPGA)	1.7 V to 1.75 V
Socket PAC418	Itanium	418 pins	3.3 V
PAC611	Itanium 2	611 pins	3.3 V
Socket 603	Xeon DP an MP	603 pins	1.5 V and 1.7 V