AMD Duron 1100 socket: Socket 462

What the Duron 1100 is

The AMD Duron 1100 is an 1100 MHz single-core desktop processor from October 2001. It runs one K7 Morgan core at 1100 MHz with no turbo, so 1 core gives 1 thread. Cache is 64 KB of full-speed L2 with 128 KB of L1 on a 180 nm process. Power is rated near 50 W in a Socket A ceramic PGA package with part number DHD1100AMT1B on a 200 MT/s front side bus with an 11x multiplier at 1.75 V.

Mid Morgan clocks balance speed and heat on old power stages, which is why the 1100 at 1100 MHz suited mainstream value boards that struggle with the hotter 1200. AMD placed the 1100 in October 2001 between the 1000 and 1200 Morgan parts. The chip supports MMX, Enhanced 3DNow and SSE.

A 1.1 GHz clock with SSE and a 50 W envelope suits mainstream DDR Socket A towers with AGP graphics. The single 200 MT/s bus ratio keeps board timing simple. That is why the 1100 shipped in mainstream budget desktops with office software.

Socket and motherboard compatibility

The 1100 fits Socket A mainstream desktops with Morgan support. It needs a 462-pin board with a 200 MT/s bus and a BIOS that lists Duron Morgan 1100. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.

Mainstream DDR towers are the natural match. Boards listing DHD1100AMT1B accept the chip with a 50 W clip cooler. Early SDRAM-only boards may still accept it, but memory type and power tables must match the support list.

Memory, PCIe and cooling

Memory is SDRAM and DDR through the board chipset, matched to the board DIMM sockets. The CPU has no memory controller, so the chipset sets the type and speed. KT266 boards commonly run DDR200 pairs for 200 MT/s Morgan parts.

A 200 MT/s front side bus ties the CPU to the chipset on a 100 MHz clock, while AGP and PCI hang off the chipset. No PCIe lanes originate on the die. Cooling uses the Socket 462 lug clip with a cooler rated for 50 W. Even clip seating protects the exposed die edge.

Upgrade paths

On the same socket, a move to a Duron 1200 such as AMD Duron 1200 keeps the board and memory when the support list names it. The 1200 adds 100 MHz at 55 W, so the cooler must cover the higher current. A Duron 1000 such as AMD Duron 1000 drops 100 MHz at lower power.

A move to Athlon XP Thoroughbred needs 266 MT/s board paths with a BIOS update. The Socket 462 page lists the Spitfire to Barton range for planning.