AMD Athlon XP 2000+ socket: Socket 462

What the Athlon XP 2000+ is

The AMD Athlon XP 2000+ is a 1667 MHz single-core desktop processor from September 2003. It runs one K7 Thorton core at 1667 MHz with no turbo, so 1 core gives 1 thread. Cache is 256 KB of L2 with 64 KB of L1 instruction and 64 KB of L1 data cache on a 130 nm process. Power is rated at 60.3 W in a Socket 462 package with part numbers AXDC2000DLT3C and AXDC2000DUT3C. A duplicate cpu_list row repeats the same spec, so one page covers both entries.

Thorton reuses the Barton die with half the L3 disabled, which is why Thorton parts carry 256 KB like Thoroughbred while using Model 10 like Barton. The 2000+ uses a 266 MT/s front side bus with a 12.5x multiplier at 1.50 V or 1.60 V depending on the bin. AMD placed it as the entry Thorton in September 2003 with the 2200+ and 2400+ above it. The chip supports MMX, SSE and Enhanced 3DNow.

Model 10 with 256 KB separates Thorton from Barton with 512 KB at the same clocks. The 2000+ Thorton at 1667 MHz shares frequency with Thoroughbred 2000+ parts, yet the Model 10 stepping changes BIOS expectations. That is why board lists name Thorton separately, even though the rating matches older cores.

Socket and motherboard compatibility

The Athlon XP 2000+ Thorton fits Socket 462 DDR boards with a 266 MT/s bus and Thorton BIOS support. It needs DDR slots and Model 10 microcode, not just any Socket 462 board with Thoroughbred-only firmware. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.

Value DDR towers with 266 MT/s chipsets are the natural match. Boards listing Thorton 2000+ accept the chip with a cooler rated for 60.3 W. Older 200 MT/s boards need a BIOS and voltage check for Model 10 operation.

Memory, PCIe and cooling

Memory is DDR through the board chipset in a single channel. Boards take modules matched to the 266 MT/s bus, with the chipset setting timing. The CPU has no memory controller.

A 266 MT/s front side bus ties the CPU to the chipset, while AGP 4x and PCI slots hang off the chipset. No PCIe lanes originate on the die. Cooling clips to the socket lug with centered pressure on the exposed die. A 60.3 W rated heatsink with fresh paste suits office towers.

Upgrade paths

On Socket 462 the steps are the Athlon XP 2200+ Thorton at 1800 MHz and the 2400+ at 2000 MHz with the same 256 KB cache. Barton 2500+ parts at 1833 MHz offer 512 KB as a cache lift where listed. Beyond Socket 462 a move to Socket 754 needs a new board with DDR slots for Athlon 64 parts. The 2000+ lifts with the lever, so swaps need no solder work.