An Athlon XP Primer

AMD's Athlon XP is based on the revamped Athlon Thunderbird core (codename Palomino) using copper interconnects and built on the .18 micron process. The Athlon XP also uses a much better organic packaging, rather than the ceramic/chisel of the previous versions of the Athlon and Duron.

Internally, the Athlon XP has improved 3DNow! Professional which adds Intel's SSE to the AMD arsenal. AMD has also added Data Prefetch capability to the Athlon XP to help speed up data transfers through the CPU itself. There is also 128K of L1 cache with an additional 256K of L2 cache running at full core speed. The Athlon XP also runs with a 1.75V core voltage on a 133 MHz (266 MHz effective DDR) front-side bus. AMD has also made some architectural improvements that help decrease core heat, and allow the Athlon XP to run cooler at higher clock speeds.

Athlon XP Model	Core Speed	Multiplier
Athlon XP 2100+	1.73 GHz (266)	13.0x
Athlon XP 2000+	1.67 GHz (266)	12.5x
Athlon XP 1900+	1.60 GHz (266)	12.0x
Athlon XP 1800+	1.53 GHz (266)	11.5x
Athlon XP 1700+	1.47 GHz (266)	11.0x
Athlon XP 1600+	1.40 GHz (266)	10.5x
Athlon XP 1500+	1.33 GHz (266)	10.0x