AMD Duron 1000 socket: Socket 462

What the Duron 1000 is

The AMD Duron 1000 is a 1000 MHz single-core desktop processor from August 2001. It runs one K7 Morgan core at 1000 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 with 25 million transistors. Power is rated near 46 W in a Socket A ceramic PGA package with part number DHD1000AMT1B on a 200 MT/s front side bus with a 10x multiplier at 1.75 V.

Morgan builds on Palomino Athlon XP concepts with SSE, larger translation buffers, hardware prefetch and a thermal diode, which is why the 1000 at 1000 MHz handles SSE software that Spitfire 950 parts skip despite close clocks. AMD placed the 1000 in August 2001 with other Morgan value parts such as the 900 MHz Duron 900. The chip supports MMX, Enhanced 3DNow, SSE and PowerNow concepts on desktop boards.

A 1 GHz clock with SSE and a modest envelope suits DDR Socket A value towers with AGP graphics. The 1.75 V core needs a solid clip cooler with case airflow. That is why the 1000 shipped in budget DDR desktops with discrete entry graphics.

Socket and motherboard compatibility

The 1000 fits Socket A DDR desktops with Morgan support. It needs a 462-pin board with a 200 MT/s bus and a BIOS that lists Duron Morgan parts. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.

DDR towers with KT266 paths are the natural match. Boards listing DHD1000AMT1B accept the chip with a 46 W cooler. Spitfire-only boards with no Morgan microcode or no 1.75 V path may refuse it, so the support list revision matters.

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 46 W. Level pressure on the exposed die prevents edge chipping.

Upgrade paths

On the same socket, a move to a Duron 1100 such as AMD Duron 1100 keeps the board and memory when the support list names it. The 1100 adds 100 MHz at 50 W, so the cooler must cover the higher envelope. A Duron 950 such as AMD Duron 950 drops 50 MHz at lower power and is a step down.

A move to Athlon XP needs a board with 266 MT/s support and a stronger power stage. The Socket 462 page lists the Spitfire to Barton range for planning.