AMD Athlon Thoroughbred core

Identification of microprocessors with Thoroughbred core:

• By part number: part numbers start with one of the prefixes: "AMSN", "AXDA", "AXLD", "AXM" or "SDA" and end with "3B", "3C" or "3D".
  An example: AXMS1400GWS3B
• By CPU ID: First two digits of CPU identification number are "68".

	Thoroughbred A	Thoroughbred B
Description	Original die shrink of Palomino core	Redesigned Thoroughbred core
Die size	80 mm2	84 mm2
Stepping1	Ends with 'A'	Ends with 'B'
CPUID	680	681
Athlon XP core voltage	Usually 1.65 V	Usually 1.6V

¹ - Core stepping is displayed below the part number:

<part number>
<core stepping> <datecode><batch code>

Athlon Thoroughbred core features
Introduction	April 17, 2002
New features	0.13 micron manufacturing process Lower power consumption Increased bus speed to 333 MHz (166 Mhz DDR)
Other names	T-bred Model 8
Previous generation	Palomino
Previous generation	Barton, Thorton

Microprocessor families	Athlon MP	Athlon XP	Mobile Athlon XP-M	Sempron
Manufacturing technology	0.13 micron
Frequency (MHz rated)	2000 - 2600	1600 - 2700	1200 - 2600	2200 - 2800
Fastest processor	AMSN2600DKT3C - 2600 MHz (rated)	AXDA2600DKV3C - 2600 MHz (rated), 266 MHz FSB AXDA2700DKV3D - 2700 MHz (rated), 333 MHz FSB	AXMD1900FVQ3B - 1900 MHz (rated), 200 MHz FSB AXMA2600FKT3C - 2600 MHz (rated), 266 MHz FSB	SDA2800DUT3D (SDA2800BOX) - 2800 MHz (rated)
Front-side bus frequency (MHz)	266 (133 MHz DDR)	266 (133 MHz DDR) 333 (166 MHz DDR)	200 (100 MHz DDR) 266 (133 MHz DDR)	333 (166 MHz DDR)
L2 cache	on-die 256 KB running at the processor speed