AMD Athlon 1100 socket: Socket 462

What the Athlon 1100 is

The AMD Athlon 1100 is an 1100 MHz single-core desktop processor from August 2000. It runs one K7 Thunderbird B core at 1100 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 60 W in a Socket A ceramic PGA package on a 200 MT/s EV6 bus with an 11x multiplier.

An 11x integer ratio at the top of the 100 MHz B line gives the 1100 clean timing on first boards, which is why it headed 100 MHz-bus towers before C-models spread. AMD sold the 1100 in August 2000 between the 1000B and 1200B. The chip supports MMX and Enhanced 3DNow.

Above-gigahertz clocks on the standard bus suit late-2000 Socket A performance towers with PC133 memory. The 60 W envelope needs a capable clip cooler. That is why the 1100 shipped in performance home systems.

Socket and motherboard compatibility

The 1100 fits Socket A performance desktops with Thunderbird-B 100 MHz support. It needs a 462-pin board with a 200 MT/s bus and a BIOS that lists Athlon 1100. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.

Late-2000 performance towers are the natural match. Boards listing the 1100 accept the chip with a 60 W cooler.

Memory, PCIe and cooling

Memory is SDRAM through the board chipset, matched to the board sockets. The CPU has no memory controller. Performance KT133 boards commonly run PC133 pairs.

A 200 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 60 W cooler.

Upgrade paths

On the same socket, an Athlon 1200 (B) such as AMD Athlon 1200 (B) keeps the B line for 100 MHz more at 66 W when the support list names it. An Athlon 1000 (B) such as AMD Athlon 1000 (B) drops 100 MHz at 54 W.

A move to C-models needs 133 MHz bus paths. The Socket 462 page lists the B and C range for planning.