AMD Athlon XP 2600+ DTR socket: Socket 462

What the Athlon XP 2600+ DTR is

The AMD Athlon XP 2600+ DTR is a 1917 MHz desktop-replacement mobile processor from November 2004. It runs one K7 Barton core at 1917 MHz with no turbo, so 1 core gives 1 thread. Cache is 512 KB of L2 with 64 KB of L1 instruction and 64 KB of L1 data cache on a 130 nm process. The package is Socket 462 for large notebooks with DDR slots.

DTR marks the chip as a desktop-replacement mobile part in a Socket A package, distinct from low power microPGA parts on Socket 563. The 2600+ DTR uses a 333 MT/s front side bus with an 11.5x multiplier, matching the desktop Barton 2600+ at 1917 MHz with 512 KB. Desktop Barton 2600+ parts carry a 68.3 W rating at 1.65 V from September 2003, while the DTR mobile bin targets notebook chassis with power handling set by the system maker. This page omits a TDP rating because no opened source states the DTR 55 W figure, and the desktop 68.3 W figure belongs to a different bin.

Barton matters here because the extra cache over Thoroughbred changes responsiveness on DDR boards. The 512 KB L2 doubles the 256 KB on Thoroughbred Sempron and Athlon XP parts at nearby clocks. That cache lift is why Barton DTR parts suited desktop-replacement notebooks that ran office and media tasks from wall power.

Socket and motherboard compatibility

The 2600+ DTR fits Socket 462 desktop-replacement notebooks with DDR memory and a BIOS that lists Barton mobile parts. It needs a notebook board with Socket 462 lands and mobile power delivery, not a Socket 563 microPGA board or a Socket 754 K8 board. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.

Board support is notebook specific. The system maker qualifies the exact DTR model for the thermal design of the chassis, since large notebooks carry different heat pipe assemblies. A desktop Socket 462 tower board may seat the chip electrically, yet the notebook BIOS and power tables decide real compatibility. Forcing the part into Socket 563 or Socket 754 can damage the package.

Memory, PCIe and cooling

Memory is DDR through the board chipset in a single channel. Notebook boards fix the SO-DIMM count and ceiling capacity, with speed tied to the 333 MT/s bus. The CPU has no memory controller, so the mobile chipset sets timing.

No PCIe lanes come from the die. The front side bus at 333 MT/s links the CPU to the mobile chipset, while AGP handles graphics and PCI handles other devices on boards of this era. Cooling is the notebook vendor heat pipe assembly for the exact chassis, not a desktop tower cooler. Paste condition and fan control decide stability, since dust and dried paste raise temperatures faster in thin notebook bodies than in towers.

Upgrade paths

On Socket 462 the mobile step is the Athlon XP 2800+ DTR at 2083 MHz with 512 KB, which shares the Barton base and 333 MT/s bus for a direct chassis qualified swap. Desktop Barton 2600+ parts at 1917 MHz offer the same clocks in tower boards with desktop cooling. Standard power Athlon XP-M 2800+ parts at 2.133 GHz suit Socket 462 notebooks with the right BIOS as a higher clock option. Beyond Socket 462 a move to Socket 754 needs a new notebook for Mobile Athlon 64 parts such as the 1.6 GHz 2700+ at 35 W. The DTR chip lifts with the socket lever, so no solder work is needed inside the same chassis.