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Comparing The Cores: Palomino Vs. Thoroughbred Vs. Northwood

Athlon XP 2100+: AMD Turns Up The Heat
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Manufacturer AMD AMD Intel
Processor Athlon XP Palomino Core Athlon XP Thoroughbred Core Pentium 4 Northwood Core
Introduction October 9, 2001 Q2, 2002 January 7, 2002
Clock Frequencies 1.2 - 1.80 GHz 1.86 - 2.xx GHz 1.6 - 2.xx GHz
Manufacturing Process 0,18 µm 0,13 µm 0,13 µm
Die size 128 mm2 80 mm2 146 mm2
Number of Gates 37,5 Million 37,5 Million 55 Million
Platform Socket462 Socket462 Socket478
CPU Bus Clock
(Front Side Bus)
133 MHz / 266 MHz DDR 133 MHz / 266 MHz DDR 100 MHz / 400 MHz QDR
L1 Execution Cache Size 64 kB 64 kB 12.000 µ-Ops (Trace Cache)
Execution Pre Decode? no no yes
L1 Data Cache Size 64 kB 64 kB 8 kB (unconfirmed)
Hardware Data Prefetch yes yes yes
L1 Cache Clock core clock core clock core clock
L1 Data Cache Bus Width 64 bit 64 bit 256 bit
L2 Cache Size 256 kB 256 kB 512 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 KT133 to KT333A
SiS 735 and SiS 745
ALi Magik 1
Nvidia nForce
AMD 750 and 760
VIA KT133A to KT333A
SiS 735 and SiS 745
ALi Magik 1
Nvidia nForce
AMD 750 and 760
Intel 845, Intel 845D and Intel 845E
Intel 850 and Intel 850E
VIA P4X266
VIA P4X266A
SiS 645
Type of Memory SDRAM, DDR-SDRAM SDRAM, DDR-SDRAM SDRAM, DDR-SDRAM, RDRAM
Memory Clock 100/133/166 MHz 100/133/166 MHz 100/133/166/300/400/533 MHz
Instruction Extensions
MMX yes yes yes
Enhanced 3DNow! yes yes no
3DNow! Professional yes yes no
SSE yes yes yes
SSE2 no no yes
Electrical Specifications
SMP-Support no ('not officially endorsed or supported') no ('not officially endorsed or supported') no
Core Voltage 1,75 Volt 1,5 Volt 1,5 Volt
Thermal Protection
(Thermal Diode)
yes yes yes
Integrated Thermal Protection Logic no, requires logic on motherboard no, requires logic on motherboard yes
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