Intel Xeon 5080 socket: Socket 771

What the Xeon 5080 is

The Intel Xeon 5080 is a 3.73 GHz dual-core server processor from May 2006. It runs two NetBurst cores at 3.73 GHz with Hyper-Threading on both cores, so 2 cores give 4 threads. Cache is 4 MB of L2 as two 2 MB dies on a 65 nm process. Power is rated at 130 W on Socket 771.

The 5080 topped the Dempsey 5000 line on a 1066 MT/s bus with a 14x multiplier at about 851 dollars launch price. It exists because flagship servers wanted the fastest NetBurst dual core with threads before Woodcrest Core parts arrived.

Socket and motherboard compatibility

The 5080 fits dual-socket Socket 771 server boards with a BIOS that lists 1066 MT/s flagship Dempsey parts. It suits flagship racks qualified for 130 W dual cores. Check the server maker CPU list for the exact board and stepping. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.

Memory, PCIe and cooling

Memory is DDR2 FB-DIMMs through the server board chipset.

A 1066 MT/s front side bus ties the CPU to the server chipset. PCIe slots hang off the chipset.

Cooling uses vendor qualified server heatsinks for the 130 W envelope in racks with directed airflow.

Upgrade paths

On Socket 771 the upgrade is Woodcrest such as the 5160 at 3 GHz with 4 MB of cache at 80 W, or the Intel Xeon 5060 at 3.2 GHz for a lower cost Dempsey. Beyond Socket 771 a move to a newer Xeon platform needs new boards and memory.