AMD Athlon XP 2500+ DTR socket: Socket 462

What the Athlon XP 2500+ DTR is

The AMD Athlon XP 2500+ DTR is a 1833 MHz desktop-replacement mobile processor from February 2003. It runs one K7 Barton core at 1833 MHz with no turbo, so 1 core gives 1 thread. Cache is 512 KB of L2 on a 130 nm process. The package is Socket 462 for large notebooks with DDR slots. This page omits a TDP rating because no opened source states the DTR 55 W figure, while desktop Barton 2500+ parts carry 68.3 W in tower bins with different cooling.

DTR bins desktop Barton silicon for notebook chassis with system maker thermal handling. The 2500+ DTR shares its 1833 MHz and 512 KB rating with the desktop Barton 2500+ at 68.3 W from February 2003, which uses a 333 MT/s bus with an 11x multiplier at 1.65 V. Mobile power tables and fan curves replace tower cooling curves, so the same silicon needs a different board. The chip supports MMX, Extended MMX, SSE, 3DNow and Enhanced 3DNow.

Desktop-replacement use explains the Socket 462 mobile package. Large notebooks wanted desktop clocks without a separate desktop board, accepting wall power operation and fan noise. That is why DTR parts match desktop ratings while carrying mobile power management for notebook chassis.

Socket and motherboard compatibility

The 2500+ DTR fits Socket 462 desktop-replacement notebooks with DDR memory and Barton mobile BIOS support. It needs a notebook board with Socket 462 lands, not a Socket 563 microPGA board. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.

Large DDR notebooks are the natural match. The maker qualifies the exact DTR model for the heat pipe, since tower cooling curves do not transfer. Desktop Socket 462 boards may seat the chip yet miss mobile power tables.

Memory, PCIe and cooling

Memory is DDR through the board chipset with notebook SO-DIMM slots. The CPU has no controller.

Front side bus operation follows the Barton mobile platform, while AGP and PCI hang off the chipset. No PCIe lanes originate on the die. Cooling is the notebook heat pipe assembly for the exact chassis, with fan control tied to CPU temperature. Service means cleaning vents and renewing paste, not fitting a tower heatsink.

Upgrade paths

On Socket 462 the mobile steps are DTR 2600+ and 2800+ Barton parts at higher clocks where the maker lists them. Desktop Barton 2500+ parts offer the same clocks in towers. Standard power XP-M 2500+ parts offer mobile bins with different power handling. Beyond Socket 462 a move to Socket 754 needs a new notebook. The DTR chip lifts with the lever, so swaps need no solder work.