Xeon
The first Xeon-branded processor was the Pentium II Xeon (code-named "Drake"). It was released in 1998, replacing the Pentium Pro in Intel's server lineup. The Pentium II Xeon was a ""Deschutes"" Pentium II (and shared the same product code: 80523) with a full-speed 512 kB, 1 MB, or 2 MB L2 cache. The L2 cache was implemented with custom 512 kB SRAMs developed by Intel. The number of SRAMs depended on the amount of cache. A 512 kB configuration required one SRAM, a 1 MB configuration: two SRAMs, and a 2 MB configuration: four SRAMs on both sides of the PCB. Each SRAM was a 12.90 mm by 17.23 mm (222.21 mm²) die fabricated in a 0.35 µm four-layer metal CMOS process and packaged in a cavity-down wire-bonded land grid array (LGA). The additional cache required a larger module and thus the Pentium II Xeon used a larger slot, Slot 2. It was supported by the 440GX dual-processor workstation chipset and the 450NX quad- or octo-processor chipset.
List of CPU power dissipation figures
Released in 2007, the Phenom was AMD's highest-end line of processors until the launch of the Phenom II. They were AMD's first processors to be based on the K10 microarchitecture, so they introduced a plethora of new features, including 2 MB of L3 Cache, a faster HyperTransport link, a 128-bit FPU, an integrated memory controller that supports DDR2-1066 (PC2-8500) memory and were manufactured at a 65 nm process for the first time. AMD claims the Phenom X4 to be the first "true" quad-core processor, because it uses a monolithic die design rather than the multi-chip-module design used by the Core 2 Quad and quad-core Core 2 Extreme processors. Suffixes: B=Business class, e=energy efficient, Black Edition=unlocked clock multiplier.