AMD Sempron 2400+ socket: Socket 462

What the Sempron 2400+ is

The AMD Sempron 2400+ is a 1667 MHz single-core desktop processor from July 2004. It runs one K7 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 62 W in a Socket 462 package.

The 2400+ sits in the Thoroughbred-B desktop group, model 8, with part number SDA2400DUT3D. It uses a 333 MT/s front side bus from a 166 MHz clock with a 10x multiplier at 1.60 V. AMD placed it between the 1583 MHz 2300+ and the 1750 MHz 2500+, giving budget towers a mid range option with identical cache and power. Instructions include MMX, SSE and Enhanced 3DNow.

A Thorton variant with part number SDC2400DUT3D shares the same 1667 MHz, 256 KB and 62 W rating from July to August 2004. The two core names for one model number reflect different die bases binned to the same rating. This page covers the Thoroughbred-B SDA2400DUT3D, since it matches the July 2004 desktop listing used for the batch.

Socket and motherboard compatibility

The Sempron 2400+ fits Socket 462 DDR boards with 333 MT/s support and a BIOS that lists Thoroughbred Sempron parts. It needs DDR slots and 1.60 V handling, not a Socket 754 board with an on-chip controller. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.

Boards with VIA K series or nForce2 chipsets and DDR slots are the natural match. A board that runs a 2200+ or 2300+ at 62 W normally accepts the 2400+ with no cooler change, since power and bus stay flat. Older 266 MT/s boards need a BIOS update for 333 MT/s Thoroughbred operation. Socket 370 and Socket 754 packages do not seat, and force risks bent pins.

Memory, PCIe and cooling

Memory is DDR through the board chipset in a single channel. Two or three DIMM sockets take modules matched to the 333 MT/s bus, with the chipset setting timing and limits. The CPU has no memory controller, so board design decides the usable capacity.

Expansion comes from the chipset rather than the CPU. A 333 MT/s front side bus links the processor to the chipset, while AGP 4x handles graphics and PCI slots take other cards. No PCIe lanes originate on the die. Cooling uses the socket lug clip centered on the exposed core with a flat base of at least 46 mm by 46 mm. Fresh paste and a 62 W rated heatsink keep temperatures stable in a tower with normal airflow. AMD caps cooler mass at 300 grams to protect the die edge.

Upgrade paths

On Socket 462 the direct upgrade is the Sempron 2600+ at 1833 MHz with the same 256 KB cache and 62 W rating, or the Sempron 2800+ at 2000 MHz as the top Thoroughbred-B step. A Barton based Sempron 3000+ at 2000 MHz with 512 KB offers more cache on boards with Barton BIOS support. Beyond Socket 462 a move to Socket 754 needs a new board, with Paris and Palermo Sempron parts as the DDR successors. The 2400+ removes with the socket lever, so board replacement is unnecessary for Socket 462 upgrades.