Template:mpu Athlon MP 2800+' (OPN AMSN2800DUT4C) based on the last-generation Barton core was a 32-bit x86 multiprocessor developed by AMD and introduced in early 2003 for the server and workstation market. This MPU operated at 2.13 GHz with a FSB transfer rate of 266 MT/s (x16 multiplier), was manufactured on a newer 130 nm process.