Duel of the Titans: Opteron vs. Xeon

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All Chipsets For AMD Opteron Compared

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Manufacturer	AMD	AMD	AMD
Processor	Opteron w/Hammer Core	Athlon XP w/Barton Core	Athlon XP w/Thoroughbred "B" Core
Introduction	April 22, 2003	March 10, 2003	Q3, 2002
Clock Frequencies	1.8 - 3.xx GHz	2.16 - 2.xx GHz	1.86 - 2.66 GHz
Process technology	0.13 µm	0.13 µm	0.13 µm
Die size	193 mm²	101 mm²	84 mm²
Number of Gates	Row 5 - Cell 1	54.3 Million	37.5 Million
Platform	Socket940	Socket462	Socket462
CPU Bus Clock (Front Side Bus)	-	166 MHz / 333 MHz DDR	133/166 MHz / 266/333 MHz DDR
L1 Execution Cache Size	64 kB	64 kB	64 kB
Execution Pre Decode?	no	no	no
L1 Data Cache Size	64 kB	64 kB	64 kB
Hardware Data Prefetch	yes	yes	yes
L1 Cache Clock	core clock	core clock	core clock
L1 Data Cache Bus Width	64 bit	64 bit	64 bit
L2 Cache Size	1024 kB	512 kB	256 kB
L2 Cache Clock	core clock	core clock	core clock
L2 Cache Addressable Range	64 GB	64 GB	64 GB
Processor Data Bus Width	64 bit	64 bit	64 bit
Platform Support
Chipsets	AMD 8131	VIA KT333 to KT400SiS 735 and SiS 745Nvidia nForce, nForce 2AMD 750 and 760	VIA KT333 to KT400SiS 735 and SiS 745Nvidia nForce, nForce 2AMD 750 and 760
Type of Memory	DDR-SDRAM (Dual)	DDR-SDRAM	SDRAM, DDR-SDRAM
Memory Clock	166 MHz	133/166/200 MHz	100/133/166/200 MHz
Instruction Extensions
MMX	yes	yes	yes
Enhanced 3DNow!	yes	yes	yes
3DNow! Professional	yes	yes	yes
SSE	yes	yes	yes
SSE2	yes	no	no
Electrical Specifications
SMP-Support	yes	no ('not officially endorsed or supported')	no ('not officially endorsed or supported')
Core Voltage	1.65 Volt	1.65 Volt	1.65 Volt
Thermal Protection (Thermal Diode)	yes	yes	yes
Integrated Thermal Protection Logic	yes	no, requires logic on motherboard	no, requires logic on motherboard

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Manufacturer	AMD	AMD	AMD
Processor	Athlon XP w/Thoroughbred Core "A" Core	Athlon XPw/Palomino Core	Athlonw/Thunderbird Core
Introduction	Q2, 2002	October 9, 2001	October 9, 2001
Clock Frequencies	1.46 - 1.80 GHz	1.2 - 1.80 GHz	0.65 - 1.40 GHz
Process technology	0.13 µm	0.18 µm	0.18 µm
Die size	80 mm²	128 mm²	128 mm²
Number of Gates	37.5 Million	37.5 Million	37.5 Million
Platform	Socket462	Socket462	Socket462
CPU Bus Clock (Front Side Bus)	133 MHz / 266 MHz DDR	133 MHz / 266 MHz DDR	100/133 MHz ; 266 MHz DDR
L1 Execution Cache Size	64 kB	64 kB	64 kB
Execution Pre Decode?	no	no	no
L1 Data Cache Size	64 kB	64 kB	64 kB
Hardware Data Prefetch	yes	yes	yes
L1 Cache Clock	core clock	core clock	core clock
L1 Data Cache Bus Width	64 bit	64 bit	64 bit
L2 Cache Size	256 kB	256 kB	256 kB
L2 Cache Clock	core clock	core clock	core clock
L2 Cache Addressable Range	64 GB	64 GB	64 GB
Processor Data Bus Width	64 bit	64 bit	64 bit
Platform Support
Chipsets	VIA KT133A to KT400SiS 735 and SiS 745ALi Magik 1Nvidia nForce, nForce 2AMD 750 and 760	VIA KT133 to KT400SiS 735 and SiS 745ALi Magik 1Nvidia nForce, nForce 2AMD 750 and 760	VIA KT133 to KT400SiS 735 and SiS 745ALi Magik 1Nvidia nForce, nForce 2AMD 750 and 760
Type of Memory	SDRAM, DDR-SDRAM	SDRAM, DDR-SDRAM	SDRAM, DDR-SDRAM
Memory Clock	100/133/166/200 MHz	100/133/166 MHz	100/133/166 MHz
Instruction Extensions
MMX	yes	yes	yes
Enhanced 3DNow!	yes	yes	yes
3DNow! Professional	yes	yes	yes
SSE	yes	yes	yes
SSE2	no	no	no
Electrical Specifications
SMP-Support	no ('not officially endorsed or supported')	no ('not officially endorsed or supported')	no ('not officially endorsed or supported')
Core Voltage	1.65 Volt	1.75 Volt	1.75 Volt
Thermal Protection (Thermal Diode)	yes	yes	no
Integrated Thermal Protection Logic	no, requires logic on motherboard	no, requires logic on motherboard	no