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Intel BX80644E52660V3 XEON E5-2660V3 2.6GHz Processor — main product image
Intel

Intel BX80644E52660V3 XEON E5-2660V3 2.6GHz Processor

A 10-core Xeon workhorse with 25MB of cache, built for server and workstation workloads that demand reliability.

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Overview

The Intel Xeon E5-2660 V3 is a server-grade processor based on the Haswell-EP microarchitecture, featuring 10 cores and 20 threads with a base clock of 2.60 GHz. Designed for the LGA 2011-3 socket, it sits in Intel's enterprise lineup, targeting multi-threaded workloads such as virtualization, database hosting, rendering, and scientific computing. The generous 25MB L3 cache helps reduce memory latency across demanding workloads, while support for ECC DDR4 memory ensures the data integrity that enterprise environments require.

As a dual-socket capable processor, the E5-2660 V3 can be paired with a second identical CPU in compatible motherboards, effectively doubling the available cores to 20 (40 threads) for workloads that scale across processors. This makes it particularly attractive for building cost-effective virtualization hosts or compute servers. While the Haswell-EP architecture is several generations old, the platform benefits from mature firmware, broad OS support, and wide availability of compatible ECC DDR4 memory and motherboards, making it a practical option for homelab builders and small businesses looking for reliable server-class performance without the cost of current-generation hardware.

Specifications

Processor
Intel Xeon E5-2660 V3
Base Clock Speed
2.60 GHz
Cores / Threads
10 / 20
Socket
LGA 2011-3 (SKT2011-3)
L3 Cache
25MB
Architecture
Haswell-EP
Model Number
BX80644E52660V3

Pros & Cons

👍 Pros

  • 10 cores and 20 threads provide strong parallel processing for virtualization and multi-threaded workloads.
  • 25MB L3 cache helps maintain performance across data-intensive server applications.
  • ECC memory support ensures data integrity critical for server and enterprise environments.
  • Dual-socket capable, allowing two CPUs in supported platforms for doubled processing power.
  • Xeon-class reliability and validation for 24/7 server operation.

👎 Cons

  • The 2.6 GHz base clock is relatively low, which limits single-threaded performance.
  • LGA 2011-3 is an older platform with limited motherboard availability on the new market.
  • No integrated graphics, requiring a discrete GPU or remote management card for display output.
  • The Haswell-EP microarchitecture is several generations behind current Xeon offerings.
  • Power consumption of the E5-2660 V3 (105W TDP) is higher than newer processors with comparable core counts.

Frequently Asked Questions

It uses the LGA 2011-3 (Socket R3) platform, which requires a compatible server or workstation motherboard.
Yes, Xeon E5 processors support ECC (Error-Correcting Code) memory, which is essential for data integrity in server environments.
It has 10 physical cores and supports 20 threads via Intel Hyper-Threading Technology.
Yes, the E5-2660 V3 is designed for dual-socket platforms, allowing two processors to work together in compatible server motherboards.
The BX80644 prefix indicates this is a boxed retail unit, which typically includes a heatsink/fan, though server-grade cooling solutions are generally recommended for sustained workloads.

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