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At The Last Second: AMD's Trump Card - The Athlon XP 2600+

Comparison: T-Bred "B" Vs. T-Bred "A" Vs. Palomino, Continued

With the launch of the Thoroughbred core in the "B" version, AMD Athlon reaches the fourth level in its evolution. The first core, the Thunderbird, was introduced about two years ago. AMD made a further step in October 2001 by introducing the Palomino core, which essentially consisted of the SSE command set expansion and an optimization of the cache line. The Thoroughbred core has been around since June 2002, and this one involves a rearrangement of the CPU's internal components, as well as smaller structures (0.13 micron). In order to give you a complete picture, we've included the data for the Barton core, which is expected to be out in Q3. The Barton represents the fifth and last level of development of the Athlon program, based on Socket 462.

ManufacturerAMDAMDAMDAMDIntel
ProcessorAthlon XPThoroughbred "B" CoreAthlon XPThoroughbred Core "A" CoreAthlon XPPalomino CoreAthlonThunderbird CorePentium 4Northwood Core
IntroductionQ3, 2002Q2, 2002October 9, 2001October 9, 2001January 7, 2002
Clock Frequencies1.86 - 2.66 GHz1.46 - 1.80 GHz1.2 - 1.80 GHz0.65 - 1.40 GHz1.6 - 3.06 GHz
Manufacturing Process0,13 µm0,13 µm0,18 µm0,18 µm0,13 µm
Die size84 mm280 mm2128 mm2128 mm2146 mm2
Number of Gates37,5 Million37,5 Million37,5 Million37,5 Million55 Million
PlatformSocket462Socket462Socket462Socket462Socket478
CPU Bus Clock (Front Side Bus)133 MHz266 MHz DDR133 MHz266 MHz DDR133 MHz266 MHz DDR100/133 MHz200/266 MHz DDR100/133 MHz400/533 MHz QDR
L1 Execution Cache Size64 kB64 kB64 kB64 kB12.000 µ-Ops (Trace Cache)
Execution Pre Decode?nonononoyes
L1 Data Cache Size64 kB64 kB64 kB64 kB8 kB (unconfirmed)
Hardware Data Prefetchyesyesyesyesyes
L1 Cache Clockcore clockcore clockcore clockcore clockcore clock
L1 Data Cache Bus Width64 bit64 bit64 bit64 bit256 bit
L2 Cache Size256 kB256 kB256 kB256 kB512 kB
L2 Cache Clockcore clockcore clockcore clockcore clockcore clock
L2 Cache Addressable Range64 GB64 GB64 GB64 GB64 GB
Processor Data Bus Width64 bit64 bit64 bit64 bit64 bit
Platform Support
ChipsetsVIA KT333 to KT400SiS 735 and SiS 745Nvidia nForce, nForce 2AMD 750 and 760VIA 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 760Intel i845, Intel i845D, Intel i845E, i845G, i845EG, i845EPIntel i850 and Intel i850EVIA P4X266, VIA P4X266AVIA P4X333, VIA P4X400SiS 645, SiS 645DX, SiS 648
Type of MemorySDRAMDDR-SDRAMSDRAMDDR-SDRAMSDRAMDDR-SDRAMSDRAMDDR-SDRAMSDRAMDDR-SDRAM, RDRAM
Memory Clock100/133/166/200 MHz100/133/166/200 MHz100/133/166 MHz100/133/166 MHz100/133/166/300/400/533 MHz
Instruction Extensions
MMXyesyesyesyesyes
Enhanced 3DNow!yesyesyesyesno
3DNow! Professionalyesyesyesyesno
SSEyesyesyesyesyes
SSE2nonononoyes
Electrical Specifications
SMP-Supportno ('not officially endorsed or supported')no ('not officially endorsed or supported')no ('not officially endorsed or supported')no ('not officially endorsed or supported')no
Core Voltage1,65 Volt1,65 Volt1,75 Volt1,75 Volt1,5 Volt
Thermal Protection (Thermal Diode)yesyesyesyesyes
Integrated Thermal Protection Logicno, requires logic on motherboardno, requires logic on motherboardno, requires logic on motherboardno, requires logic on motherboardyes