Explore Intel Xeon E5-2666 v4 @ 2.80GHz technical reviews, specifications and benchmark results, with practical context for server workloads and platform planning.
Last updated: 2026-10-20Intel Xeon E5-2666 v4 @ 2.80GHz is a Server processor with 12 cores and 24 threads. It runs at 2.8 GHz and boosts up to 3.4 GHz. It records a PassMark CPU Mark of 17958 and a single-thread rating of 2052. Its stated TDP is 145 W.
A summary based on specifications and results.
Intel Xeon E5-2666 v4 @ 2.80GHz is a Server processor with 12 cores and 24 threads. It runs at 2.8 GHz and boosts up to 3.4 GHz. It records a PassMark CPU Mark of 17958 and a single-thread rating of 2052. Its stated TDP is 145 W.
Specification context
The Intel Xeon E5-2666 v4 @ 2.80GHz is a Server released in 2024. Recorded specifications include 12 cores and 24 threads, up to 3.40 GHz turbo, a 145 W reference TDP, a 17,958 CPU Mark. Use these figures to understand its position, then compare the results with your software and the complete platform.
The 17,958 CPU Mark is a broad overall-performance measure, while the 2,052 single-thread result adds context for less-parallel work. Compare the nearby alternatives on this page and do not treat one score as a verdict for every application.
It uses socket LGA2011-V3. A matching socket is only the first check; confirm the official motherboard CPU-support list, BIOS revision and board power limits.
The 145 W TDP helps size the cooling class, but it is not the same as peak wall-power consumption.
FAQ
The main recorded details are 12 cores and 24 threads, up to 3.40 GHz turbo, a 145 W reference TDP, a 17,958 CPU Mark. The tables on this page show socket, memory, cache and graphics data when available.
The product name or CPU Mark alone cannot answer that. Check single-thread performance, core count, the target graphics card, gaming resolution and results from the games you play.
Start with LGA2011-V3 motherboards, then confirm the official CPU-support list and required BIOS revision for the exact board before buying.
The recorded reference TDP is 145 W. Real consumption can be lower or higher depending on power limits, motherboard, workload and cooling.
This guidance interprets recorded specifications and results; it does not claim hands-on device testing. Results can vary with motherboard, power, memory and cooling.
Multi-axis comparison
A direct comparison with nearby processors from the same brand and a similar core count.
A higher CPU Mark indicates stronger overall performance.
Measures speed in tasks that depend on one CPU thread.
Estimated as CPU Mark divided by TDP.
Bars are relative to the processors shown here, not a global ranking of every CPU.
Snapshot from 2026-10-20
| Brand | Intel |
|---|---|
| Category | Server |
| Release year | 2024 |
| Socket | LGA2011-V3 |
| Cores / threads | 12 / 24 |
| Base clock | 2.80 GHz |
| Max turbo | 3.40 GHz |
| TDP | 145 W |
| Integrated graphics | — |
| Memory type | — |
|---|---|
| Official speed | — |
| Maximum capacity | — |
