Xeon L5639
Intel
PassMark
4,419
Performance Spectrum - CPU
About PassMark
PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.
Overview
The Xeon L5639 is manufactured by Intel. It was released in 2015-01-01. It is based on the Westmere-EP (2010−2011) architecture. It features 6 cores and 12 threads. Base frequency is 2.133 GHz, with boost up to 2.67 GHz. L3 cache: 12 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1366. Thermal design power (TDP): 60 Watt. Memory support: DDR3. Passmark benchmark score: 4,419 points. Launch price was $800.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. The Xeon L5639 is positioned at rank #595 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Xeon L5639
FPS Benchmarks
Predicted performance for Xeon L5639 across popular games. Tested paired with RTX 4090 to isolate CPU performance.
Path of Exile 2
Counter-Strike 2
League of Legends
Valorant
Technical Analysis
Detailed breakdown of Xeon L5639 specifications and capabilities.
Processing Power
The Xeon L5639 is a 6-core / 12-thread processor based on the Westmere-EP (2010−2011) architecture, manufactured on a 32 nm process node. It reaches a maximum boost clock of 2.67 GHz from a base frequency of 2.133 GHz— higher boost clocks directly translate to better single-threaded performance and responsiveness in gaming. It carries 12 MB (total) of L3 cache, plus 256 kB (per core) of L2 cache and 64 kB (per core) of L1 cache per core. In the PassMark benchmark (a comprehensive multi-threaded test), it scores 4,419, placing it in the Entry Level performance tier as a Legacy generation product.
| Specification | Xeon L5639 |
|---|---|
| Cores / ThreadsPhysical/logical processing units | 6C / 12T |
| Max Boost ClockPeak single-core speed under boost | 2.67 GHz |
| Base ClockGuaranteed minimum operating frequency | 2.133 GHz |
| ArchitectureCPU microarchitecture design | Westmere-EP (2010−2011) |
| Process NodeFabrication technology — smaller = more efficient | 32 nm |
| L3 CacheShared cache — reduces memory latency for all cores | 12 MB (total) |
| L2 CachePer-core fast cache for frequently accessed data | 256 kB (per core) |
| L1 CacheUltra-fast per-core cache | 64 kB (per core) |
| Die SizePhysical silicon area of the processor | 239 mm2 |
| Transistor CountMore transistors = more capabilities | 1,170 million |
| 64-bit Support | Yes |
| PassMark ScoreOverall multi-threaded benchmark score | 4,419 |
Memory & Platform
The Xeon L5639 fits into the LGA1366 socket and supports PCIe 4.0. It supports DDR3 memory.
| Specification | Xeon L5639 |
|---|---|
| TypeDesktop or Laptop processor | server |
| SocketMotherboard socket required | LGA1366 |
| PCIe GenerationPeripheral interconnect speed — affects GPU and SSD bandwidth | PCIe 4.0 |
| RAM TypeSupported memory standard | DDR3 |
| Max CPUs in ConfigMulti-socket support for servers | 2 |
Power & Cooling
The Xeon L5639 has a rated TDP (Thermal Design Power) of 60 Watt — this indicates the amount of heat generated under sustained load and determines what cooling solution is needed.
| Specification | Xeon L5639 |
|---|---|
| TDPThermal Design Power — heat output under sustained workload | 60 Watt |
Value Analysis
It currently holds Rank #595 in the overall cost-benefit ranking — this ranking factors in performance-per-dollar relative to all available processors. Performance ranking position: #1955 out of all indexed processors.
| Specification | Xeon L5639 |
|---|---|
| Launch PriceOriginal retail price at launch | $800 |
| Cost-Benefit RankPosition in overall value ranking | #595 |
| Performance RankPosition in overall performance ranking | #1955 |
| Release DateLaunch date | 2015-01-01 |
| Release Year | 2011 |
| DesignerArchitecture designer (e.g. Intel, AMD) | Intel |
| ManufacturerFabrication foundry (e.g. TSMC) | Intel |
Similar Performance
Processors with benchmark scores closest to the current hardware, grouped by manufacturer.
Intel (12)
AMD (12)
Our Recommendation for Xeon L5639
Suggested pairings based on performance balance
Minimum (Avoid Bottleneck) (12)
Recommended (Balanced) (12)
High-End (Max Performance) (12)
Popular Comparisons
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