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Intel Xeon E5-2643 v3 6C 3.40GHz LGA2011-3 CPU
Inclusive of VAT Β· Warranty included
INTEL
Product Specification
| Brand | INTEL |
| Model | Xeon E5-2643 v3 |
| Cores | 6 |
| Threads | 12 |
| Base Clock | 3.40GHz |
| Turbo Clock | 3.70GHz |
| Smart Cache | 20MB |
| Socket | LGA2011-3 |
| TDP | 135W |
| Memory Support | DDR4-1866 |
| PCIe Support | PCIe 3.0 |
About This Product
Overview
The Intel Xeon E5-2643 v3 is a server-class CPU designed for systems that use the LGA2011-3 socket. With 6 cores and 12 threads, it is well suited to workloads that benefit from strong multi-threaded processing while still maintaining responsive single-thread performance. Its 3.40GHz base clock and 3.70GHz turbo clock make it a practical choice for environments where consistent compute capability matters, and the 20MB Smart Cache helps support efficient data access during demanding tasks. As part of the Xeon family, this processor is intended for professional platforms that require dependable operation and compatibility with server and workstation hardware built around DDR4 memory and PCIe 3.0 expansion.
Performance & Scalability
With 6 cores and 12 threads, the Xeon E5-2643 v3 provides a balanced mix of parallel processing and clock speed, making it suitable for a range of business and technical workloads. The higher base frequency can be beneficial in applications that rely on strong per-core performance, while Hyper-Threading support helps improve efficiency in multi-tasked environments. PCIe 3.0 support allows the processor to work with compatible expansion devices, and DDR4-1866 memory support helps align the CPU with modern platform requirements. For organizations maintaining or upgrading an existing LGA2011-3 system, this processor can be a straightforward option for restoring or extending platform capability without changing the underlying motherboard architecture.
Storage Flexibility
Although the processor itself does not include storage, its PCIe 3.0 support and platform compatibility can help support systems that use a variety of storage configurations through the motherboard and attached controllers. In server and workstation builds, the CPU plays an important role in handling data movement between memory, storage interfaces, and expansion cards. When paired with compatible hardware, the Xeon E5-2643 v3 can fit into systems that use SSDs, RAID controllers, or other storage-related add-in cards, making it useful in environments where storage performance and expandability are important considerations.
Why Choose This Product?
This processor is a strong fit for buyers looking for a genuine Intel Xeon CPU for an LGA2011-3 platform. It offers a clear specification set that is easy to match against existing hardware requirements, including 6 cores, 12 threads, DDR4-1866 memory support, and a 135W TDP. For IT teams, resellers, and system builders working with compatible servers or workstations, it provides a practical replacement or upgrade path within an established platform. The combination of Xeon reliability, solid clock speeds, and broad platform support makes it a useful component for maintaining professional systems with known compatibility needs.
About this processor
Intel Xeon E5-2643 v3, a 6 core, 12 thread LGA2011-3 processor at 3.40GHz with 3.70GHz turbo and 20MB cache, built for clock speed, refurbished. Tested and stocked in Doha, delivered across Qatar within a day.
The Xeon E5-2643 v3 is the frequency optimised six core of Intel's E5 v3 family, the Haswell generation for the LGA2011-3 socket. Its 3.40GHz base and 3.70GHz turbo are the highest of the generation, with 20MB of cache, DDR4 memory at 1866 MT/s, PCIe 3.0 and a 135W rating. It exists for software that runs on few threads and is licensed per core: databases, trading systems, CAD and simulation.
Buyers in Qatar fit the refurbished 2643 v3 to 13th generation Dell servers, HPE Gen9 servers and Precision or Z series workstations of that platform when a fast clock matters more than core count. ServerDove keeps it in Doha stock for those licence sensitive and latency sensitive builds.
- Cores
- 6C / 12T
- Clock
- 3.40 to 3.70GHz
- Cache
- 20MB
- Socket
- LGA2011-3
- TDP
- 135W
Part numbers and identification
Buyers search for "E5-2643 v3", "2643v3" and "Xeon E5-2643v3 3.4GHz".
| SKU | CPU-INTEL-E5-2643V3 |
| Model | Intel Xeon E5-2643 v3 |
| Family | Xeon E5 v3, Haswell, frequency optimised |
Specification
Twenty megabytes of cache on six cores is generous, and with the high clock it gives each thread more cache and more speed than any other v3 part.
| Cores | 6 |
| Threads | 12 |
| Base clock | 3.40GHz |
| Turbo clock | 3.70GHz |
| Smart Cache | 20MB |
| Socket | LGA2011-3 |
| TDP | 135W |
| Memory support | DDR4-1866, four channels |
| PCIe | PCIe 3.0, 40 lanes |
The 135W rating is the cost of the clock: the same six cores in a mainstream part draw 85W, and the difference is spent on running every core a gigahertz faster. Cooling, not compatibility, is the thing to check before fitting it.
A database licensed per core runs on twelve licences across two of these processors and still has the fastest clocks in the generation. The same logic applies to engineering applications that use one or two threads. For virtualisation or batch work, the eight and fourteen core v3 and v4 parts give more throughput per socket.
Installation
No firmware update is needed on a v3 era server. The 135W rating is above what some 1U chassis support with the standard heatsink, so use the high performance heatsink where the vendor lists one and check the chassis processor wattage limit. Fit two identical 2643 v3 processors for a dual socket system, with DDR4 ECC Registered memory, which runs at 1866 MT/s with this processor.
In the box
- The part as described, with the part number shown
Images are for illustration. The unit supplied is the one described in the specification and may differ cosmetically.
Not included
- The server or system it installs into
- Mounting hardware, screws or caddies unless listed
- Cables unless listed
Frequently Asked Questions
What socket does the Intel Xeon E5-2643 v3 use?
This CPU uses the LGA2011-3 socket and is designed for compatible server and workstation motherboards.
How many cores and threads does this processor have?
The Intel Xeon E5-2643 v3 has 6 cores and 12 threads.
What memory type is supported?
This processor supports DDR4-1866 memory on compatible systems.
Is PCIe 3.0 supported?
Yes, the Xeon E5-2643 v3 supports PCIe 3.0 for compatible expansion devices.
Is this CPU suitable for existing LGA2011-3 systems?
Yes, it is intended for systems that already use the LGA2011-3 platform and meet the processor requirements.
Why buy refurbished?
Enterprise-grade performance at a fraction of the price of new.
Fully tested and verified
Every unit goes through hardware diagnostics before dispatch: POST tests, burn-in, memory checks and power supply verification.
Enterprise performance for less
Refurbished units deliver the same hardware capability as new, at significantly lower upfront cost, freeing budget for CPUs, memory and storage.
Available now
New enterprise hardware carries lead times of weeks or months. Our stock is held in Doha and ready to ship within 24 hours.
Backed by support
Warranty on every unit we sell, with installation and ongoing hardware support available across Qatar.