Duel of the Titans: Opteron vs. Xeon

All Chipsets For AMD Opteron Compared

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ManufacturerAMDAMDAMD
ProcessorOpteron w/Hammer CoreAthlon XP w/Barton CoreAthlon XP w/Thoroughbred "B" Core
IntroductionApril 22, 2003March 10, 2003Q3, 2002
Clock Frequencies1.8 - 3.xx GHz2.16 - 2.xx GHz1.86 - 2.66 GHz
Process technology0.13 µm0.13 µm0.13 µm
Die size193 mm²101 mm²84 mm²
Number of GatesRow 5 - Cell 1 54.3 Million37.5 Million
PlatformSocket940Socket462Socket462
CPU Bus Clock (Front Side Bus)-166 MHz / 333 MHz DDR133/166 MHz / 266/333 MHz DDR
L1 Execution Cache Size64 kB64 kB64 kB
Execution Pre Decode?nonono
L1 Data Cache Size64 kB64 kB64 kB
Hardware Data Prefetchyesyesyes
L1 Cache Clockcore clockcore clockcore clock
L1 Data Cache Bus Width64 bit64 bit64 bit
L2 Cache Size1024 kB512 kB256 kB
L2 Cache Clockcore clockcore clockcore clock
L2 Cache Addressable Range64 GB64 GB64 GB
Processor Data Bus Width64 bit64 bit64 bit
Platform Support
ChipsetsAMD 8131VIA KT333 to KT400SiS 735 and SiS 745Nvidia nForce, nForce 2AMD 750 and 760VIA KT333 to KT400SiS 735 and SiS 745Nvidia nForce, nForce 2AMD 750 and 760
Type of MemoryDDR-SDRAM (Dual)DDR-SDRAMSDRAM, DDR-SDRAM
Memory Clock166 MHz133/166/200 MHz100/133/166/200 MHz
Instruction Extensions
MMXyesyesyes
Enhanced 3DNow!yesyesyes
3DNow! Professionalyesyesyes
SSEyesyesyes
SSE2yesnono
Electrical Specifications
SMP-Supportyesno ('not officially endorsed or supported')no ('not officially endorsed or supported')
Core Voltage1.65 Volt1.65 Volt1.65 Volt
Thermal Protection (Thermal Diode)yesyesyes
Integrated Thermal Protection Logicyesno, requires logic on motherboardno, requires logic on motherboard
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ManufacturerAMDAMDAMD
ProcessorAthlon XP w/Thoroughbred Core "A" CoreAthlon XPw/Palomino CoreAthlonw/Thunderbird Core
IntroductionQ2, 2002October 9, 2001October 9, 2001
Clock Frequencies1.46 - 1.80 GHz1.2 - 1.80 GHz0.65 - 1.40 GHz
Process technology0.13 µm0.18 µm0.18 µm
Die size80 mm²128 mm²128 mm²
Number of Gates37.5 Million37.5 Million37.5 Million
PlatformSocket462Socket462Socket462
CPU Bus Clock (Front Side Bus)133 MHz / 266 MHz DDR133 MHz / 266 MHz DDR100/133 MHz ; 266 MHz DDR
L1 Execution Cache Size64 kB64 kB64 kB
Execution Pre Decode?nonono
L1 Data Cache Size64 kB64 kB64 kB
Hardware Data Prefetchyesyesyes
L1 Cache Clockcore clockcore clockcore clock
L1 Data Cache Bus Width64 bit64 bit64 bit
L2 Cache Size256 kB256 kB256 kB
L2 Cache Clockcore clockcore clockcore clock
L2 Cache Addressable Range64 GB64 GB64 GB
Processor Data Bus Width64 bit64 bit64 bit
Platform Support
ChipsetsVIA KT133A to KT400SiS 735 and SiS 745ALi Magik 1Nvidia nForce, nForce 2AMD 750 and 760VIA KT133 to KT400SiS 735 and SiS 745ALi Magik 1Nvidia nForce, nForce 2AMD 750 and 760VIA KT133 to KT400SiS 735 and SiS 745ALi Magik 1Nvidia nForce, nForce 2AMD 750 and 760
Type of MemorySDRAM, DDR-SDRAMSDRAM, DDR-SDRAMSDRAM, DDR-SDRAM
Memory Clock100/133/166/200 MHz100/133/166 MHz100/133/166 MHz
Instruction Extensions
MMXyesyesyes
Enhanced 3DNow!yesyesyes
3DNow! Professionalyesyesyes
SSEyesyesyes
SSE2nonono
Electrical Specifications
SMP-Supportno ('not officially endorsed or supported')no ('not officially endorsed or supported')no ('not officially endorsed or supported')
Core Voltage1.65 Volt1.75 Volt1.75 Volt
Thermal Protection (Thermal Diode)yesyesno
Integrated Thermal Protection Logicno, requires logic on motherboardno, requires logic on motherboardno