AMD Athlon 1133 socket: Socket 462

What the Athlon 1133 is

The AMD Athlon 1133 is an 1133 MHz single-core desktop processor from October 2000. It runs one K7 Thunderbird C core at 1133 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 63 W in a Socket A ceramic PGA package on a 266 MT/s EV6 bus with an 8.5x multiplier on a 133 MHz clock.

An 8.5x half-ratio on the faster bus gives the 1133 a steady step over the 1000C, which is why it headed DDR performance towers in late 2000. AMD sold the 1133 in October 2000 with the 1000C and 1200C. The chip supports MMX and Enhanced 3DNow.

Above-gigahertz clocks on a 266 MT/s bus suit Socket A DDR towers with AGP graphics. The 63 W envelope needs a capable clip cooler. That is why the 1133 shipped in performance home systems.

Socket and motherboard compatibility

The 1133 fits Socket A DDR desktops with Thunderbird-C support. It needs a 462-pin board with a 266 MT/s bus and a BIOS that lists Athlon 1133. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.

DDR performance towers are the natural match. Boards listing the 1133 accept the chip with a 63 W cooler. Boards with 100 MHz-only tables cannot feed the 8.5x 133 MHz ratio.

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 boards commonly run DDR200 pairs for 1133 parts.

A 266 MT/s EV6 bus ties the CPU to the chipset, while AGP and PCI hang off the chipset. No PCIe lanes originate on the die. Cooling uses the Socket 462 lug clip with a 63 W cooler.

Upgrade paths

On the same socket, an Athlon 1200 (C) such as AMD Athlon 1200 (C) keeps the C line for 67 MHz more at 66 W. An Athlon 1000 (C) such as AMD Athlon 1000 (C) drops 133 MHz at 54 W.

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