AMD Athlon 1000 (C) socket: Socket 462

What the Athlon 1000 (C) is

The AMD Athlon 1000 (C) is a 1000 MHz single-core desktop processor from October 2000. It runs one K7 Thunderbird C core at 1000 MHz with no turbo, so 1 core gives 1 thread. Cache is 256 KB of full-speed on-die L2 with 128 KB of L1 on a 180 nm process. Power is rated at 54 W in a Socket A ceramic PGA package on a 266 MT/s EV6 bus with a 7.5x multiplier on a 133 MHz clock.

The 133 MHz clock with a 7.5x ratio reaches the same gigahertz mark as the B-model 10x revision while lifting memory throughput, which is why C-models suit 266 MT/s boards with DDR paths. AMD sold the 1000C in October 2000 with the 1133 and 1200C. The chip supports MMX and Enhanced 3DNow.

Gigahertz clocks on the faster bus suit Socket A towers with DDR memory and AGP graphics. The 7.5x half-ratio needs an exact BIOS string. That is why the 1000C shipped in DDR-equipped performance systems.

Socket and motherboard compatibility

The 1000 (C) fits Socket A DDR desktops with Thunderbird-C 133 MHz support. It needs a 462-pin board with a 266 MT/s bus and a BIOS that lists Athlon 1000C. 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 the 1000C accept the chip with a 54 W cooler. Boards set only for 100 MHz B-models still run it downshifted, but the 133 MHz tables must exist.

Memory, PCIe and cooling

Memory is SDRAM and DDR through the board chipset, matched to the board sockets. The CPU has no memory controller. DDR KT266 boards commonly run DDR200 pairs for 1000C parts.

A 266 MT/s EV6 bus ties the CPU to the chipset on a 133 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 54 W cooler.

Upgrade paths

On the same socket, an Athlon 1133 such as AMD Athlon 1133 keeps the C line for 133 MHz more at 63 W when the support list names it. An Athlon 1000 (B) such as AMD Athlon 1000 (B) is the 100 MHz twin at matching clocks and power.

A move to Athlon XP needs 266 MT/s Palomino strings. The Socket 462 page lists the B and C range for planning.