On October 12, 2011, AMD revealed Excavator to be the code name for the fourth-generation Bulldozer-derived core.
[5] An Excavator-based APU and CPU variant named Toronto for server and enterprise markets was also produced.
[11] Excavator is designed using High Density (aka "Thin") Libraries normally used for GPUs to reduce electric energy consumption and die size, delivering a 30 percent increase in efficient energy use.
[12] Excavator can process up to 15% more instructions per clock compared to AMD's previous core Steamroller.
[13] AMD's Fusion Controller Hub has been discontinued since the release of the Carrizo series of CPUs as it has been integrated into the same die as the rest of the CPU.