The Intel Xeon E5 family sits inside a huge number of the rack and tower servers still running in UK comms rooms, from 12th-generation PowerEdge and ProLiant Gen8 through to 13th-generation PowerEdge and ProLiant Gen9. That installed base is what makes E5 processors such a practical buy. Adding a second CPU, replacing a failed one or stepping up to a higher core count is often the cheapest way to get several more years from a server you already own. This range spans original E5 and v2 parts for the LGA2011 socket alongside v3 and v4 parts for LGA2011-3, from 70W low-power chips to 18-core flagships.
Intel Xeon E5 family at a glance
Typical deployments
Virtualisation hosts
Core count and memory reach matter more than clock speed. A pair of 18-core E5-2697 v4 processors gives a dual-socket host 36 cores and 72 threads, and the 16-core E5-2698 v3 is a sensible choice on boards that stay on v3 firmware. Populate both sockets: on most dual-socket servers half the DIMM slots belong to the second CPU. Our guide to sizing servers for VMware and Hyper-V goes into more detail.
SQL and per-core licensed software
Windows Server, SQL Server and plenty of other enterprise software are licensed per core, so a dense chip can cost more in licences than it saves in hardware. Favour fewer, faster cores. The E5-2697 v3 at 2.60GHz and the E5-2690 v4 both keep 14 cores at 2.60GHz rather than spreading the load across 16 or 18 slower ones. Put the money saved into memory for the buffer pool.
CAD and engineering workstations
The E5-1600 series is single-socket only and turns up in workstations such as the HP Z440 and Dell Precision T5810. Clock speed is the priority here, because modelling and many engineering applications lean on one or two threads. The E5-1660 v4 runs 8 cores at 3.20GHz. The popular E5-1650 was sold in versions from v1 to v4, so confirm which generation your board takes before ordering.
Always-on file, backup and lab servers
When a machine runs around the clock and idles most of the day, power draw counts for more than peak throughput. The low-power E5-2650L is an 8-core, 70W part for original E5 platforms such as the PowerEdge R620 and R720 or ProLiant DL360p and DL380p Gen8. For more headroom on the same LGA2011 boards, the 12-core E5-2695 v2 is a common final upgrade.
Compute, build and render nodes
Batch jobs, CI build agents and render queues scale with threads and care little about single-core speed. The E5-2683 v3 trades clock speed (2.00GHz) for 14 cores at 120W, and the Xeon E5-2670 v3 12 core is a lower-cost way to fill a rack of identical nodes. Buy enough matching processors for the whole pool so every node behaves the same under the scheduler.
Lifecycle spares
Keeping a fleet of Gen9 or 13th-generation servers running until its replacement arrives is a common reason to buy E5 parts now. Hold a spare matched by sSpec to the processors already in service, so a failed CPU can be swapped for an identical one and the pair stays supported. One spare per model across a small estate is usually enough.
Compatibility checks before you order
Why buy from Compuwyze
- 12-month return-to-base warranty on processors and other individual components
- Orders for individual parts placed before 2pm aim to ship the same day, with UK delivery normally the next working day once shipped
- Free UK delivery on orders over £50
- Returns accepted within 30 days, with return shipping paid by the customer
- International delivery via FedEx economy or priority, usually 2 to 5 days
- Prefer a complete system? Build one in our server configurator: configured servers carry a 3-year return-to-base warranty and we aim to ship them within 2 business days
Intel Xeon E5 FAQs
Which socket does an Intel Xeon E5 processor use?
It depends on the generation. Original E5 and v2 processors in the 1600 and 2600 series use LGA2011, while v3 and v4 use LGA2011-3. The sockets look alike but are keyed differently, so a chip from one group will not seat in a board built for the other. The version suffix in the model name is the quickest way to tell them apart.
Can I mix two different E5 processors in a dual-socket server?
No. Server manufacturers support only identical pairs, meaning the same model and ideally the same sSpec. A mismatched pair may fail to boot or run with errors. If you are adding a second CPU, check the sSpec printed on the one already fitted and order the same part.
Is there an Intel Xeon E5 v5 family?
No. v4 was the last E5 generation. Intel replaced both the E5 and E7 lines with Xeon Scalable, which uses a different socket and platform. If you are planning a new deployment rather than upgrading an existing server, look at our Intel Xeon Scalable processors instead.
Is a Xeon E5 better than a Core i7, and is it any good for gaming?
For heavily threaded work, an E5 offers things the desktop Core i7 chips of the same era did not: higher core counts, registered ECC memory and dual-socket operation. For gaming it is a poor fit. Games favour high clock speeds and aggressive boost, where a modern desktop processor will be much quicker, and most E5 boards are server or workstation designs without consumer features.
Can I run Windows 11 on a Xeon E5?
Xeon E5 processors are not on Microsoft's supported processor list for Windows 11, so it is not an officially supported setup. For servers, Windows Server, VMware ESXi, Hyper-V and the major Linux distributions are the usual choices. On an E5 workstation, check the support position of the operating system you need before you commit.
When did the Intel Xeon E5 come out?
The first E5-2600 processors launched in 2012, followed by v2 in 2013, v3 in 2014 and v4 in 2016. Older parts such as the E5-2665 belong to that first generation and suit 12th-generation PowerEdge and ProLiant Gen8 servers, while v3 and v4 chips are the ones to look at for Gen9 and 13th-generation machines.