AMD Athlon XP-M 2500+ (72W) socket: Socket 462

What the Athlon XP-M 2500+ (72W) is

The AMD Athlon XP-M 2500+ (72W) is a 1867 MHz mobile processor from March 2003. It runs one K7 Barton core at 1867 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 a 72 W figure for this exact XP-M bin, while desktop and Palomino 72 W figures belong to different bins.

The 2500+ (72W) shares clocks and cache with unsuffixed and 35W bins at 1867 MHz, so thermal design separates otherwise identical ratings. All use a 266 MT/s front side bus with a 14x multiplier and PowerNow control. AMD aimed 72 W bins at the largest notebooks with desktop-like cooling, trading battery life for clocks. The chip supports MMX, Extended MMX, SSE, 3DNow and Enhanced 3DNow.

Large chassis with strong fans are mandatory here. A 72 W mobile bin needs a desktop-replacement heat pipe, not a thin notebook cooler. That is why the suffix decides board support despite matching frequency and cache.

Socket and motherboard compatibility

The 2500+ (72W) fits Socket 462 large notebooks with DDR memory and a BIOS that lists the 72W Barton bin. It needs a notebook board with high current power delivery. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.

Largest DDR notebooks are the natural match. Only chassis qualified for 72 W mobile operation sustain the bin. Smaller 35W chassis need the 35W suffix instead.

Memory, PCIe and cooling

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

Front side bus operation ties the CPU to the chipset, while graphics hangs off the chipset. No PCIe lanes originate on the die. Cooling is the large notebook heat pipe with strong fans. Vent service matters at high mobile power.

Upgrade paths

On Socket 462 the 35W bin at the same clocks suits efficient bodies. Higher XP-M 2600+ Barton parts offer more clocks where listed. Beyond Socket 462 a move to Socket 754 needs a new notebook. The chip lifts with the lever, so swaps need no solder work.