E5405 Quad Core Cpu

The Intel Xeon E5405 is a legacy quad-core server processor released in late 2007 as part of the Harpertown (5400) series FlagshiptechCpumedics. Operating at 2.0 GHz with a 12MB L2 cache and a 1333MHz Front Side Bus (FSB), it was a workhorse for mid-range servers during its era AmazonCpu-World.

Product Insights & Specifications

* Architecture: Built on the 45nm process with the LGA771 (Socket 771) interface Cpu-WorldTechpowerup.

* Performance: Features a modest TDP of 80W, requiring consistent cooling for server environments AmazonTechpowerup.

* Lifecycle Status: It reached "End of Life" (EOL) status in late 2010, making new units virtually non-existent in modern retail Cpumedics.

Market Trends (2024–2026)

* Legacy Value: The E5405 is currently valued primarily in the refurbished and surplus markets. It remains popular for low-cost home lab projects (e.g., retro-gaming servers, NAS setups) due to its extremely low cost on the secondary market RedditFacebook.

* Transition to Newer Architecture: Market demand has shifted entirely toward newer Xeon Scalable (e.g., 5th Gen Emerald Rapids) and E5-2600 series processors, which offer significantly better performance-per-watt SemianalysisYoutube.

* Cost vs. Efficiency: While the CPU itself is cheap (often under $10 in used markets), the overall energy cost of running 2007-era hardware in 2026 often outweighs its utility compared to modern low-power alternatives ServethehomeTruenas.

Sourcing & Availability

Direct inventory for the E5405 is scarce on major B2B platforms today. Sourcing usually requires contacting specialized IT refurbishers or hardware wholesalers who handle legacy server components. Better-performing compatible alternatives from the same era include the Xeon X5460 (3.16 GHz), which is more commonly found in current used inventory.