Intel Xeon E3-1225 v5

Server CPUIntel

Also called intel xeon e3-1225 v5, xeon e3-1225 v5, e3-1225v5, xeon-e3-1225-v5

IntelServer CPUSkylake

Intel Xeon E3 server processor on Skylake, with 4 cores and 4 threads and 8 MB L3 at 80 W TDP on a 14 nm process addressing up to 64 GB and Intel HD Graphics P530.

What you need to know

Intel Xeon E3-1225 v5 is a legacy server cpu.

Intel Xeon E3-1225 v5 launched in October 1, 2015., It has 4 cores and 4 threads on Skylake, dropping into the FCLGA1151 socket. Treat the spec table as the facts. Age alone does not tell you to throw it out.

Still good?: Only if the workload is light
Product age: 10 years old
Upgrade pressure: Moderate

Feex says

Server parts care about cores, memory channels, and the platform. Gaming charts are the wrong ruler.

What this hardware means today

Age and usefulness are not the same number. This page keeps them separate.

Performance today: Average. Average for the class when RAM, storage, and the GPU keep up.
Product age 10 years old: Legacy. Launched October 1, 2015. Newer platforms exist. That does not make this chip unusable by itself.
Support status: Supported. Current Windows and current applications still run on this class of CPU. Platform BIOS support depends on the motherboard or laptop vendor.
Upgrade pressure: Moderate. Upgrade pressure comes from platform features and specific CPU-bound work, not from the chip being unusable.

Where does it sit?

Skylake sits on Intel's recent Core timeline. Later desktop branding moved toward Core Ultra.

11th Gen

12th Gen

13th Gen

14th Gen

Core Ultra

Performance context

These are qualitative readings, not a fake 8.7 out of 10. Workload still wins.

Gaming: Poor fit

Not the job. Use a desktop or workstation part if games are the point.

Productivity: Average

4 cores cover office, browser, and compile work in this class.

Multithreaded workloads: Average

4 threads. Heavy encodes still scale further on higher-core parts.

General use: Good

Everyday Windows use is not where most people notice this SKU first.

Efficiency: Good

Rated 80 W base power. That is a platform number, not a promise about your cooler.

Should you upgrade?

Probably not based on CPU performance alone.

Upgrade makes more sense if

Your workload is strongly CPU limited
You need a newer platform for memory, I/O, or chipset features
You need substantially more multicore performance
You need newer connectivity that your current board cannot offer

Upgrade makes less sense if

The GPU is the real bottleneck
Current applications are already responsive
The CPU rarely limits your workload

Specifications

Figures below follow the Feex Hardware Database record for this SKU. Fields without a recorded value are omitted.

Processor

Intel Xeon E3-1225 v5 is built on Skylake using a 14 nm process.

Intel Xeon E3-1225 v5 specifications: Processor
Manufacturer	Intel
Family	Xeon E3
Architecture	Skylake
Generation	Intel Xeon Processor E3 v5 Family
Manufacturing process	14 nm
Segment	Server

Cores and threads

Intel Xeon E3-1225 v5 has 4 cores and 4 threads.

Intel Xeon E3-1225 v5 specifications: Cores and threads
Cores	4
Threads	4

Clock speeds

Base clock is 3.3 GHz. Boost reaches 3.7 GHz.

Intel Xeon E3-1225 v5 specifications: Clock speeds
Base frequency	3.3 GHz
Max boost	3.7 GHz

Cache

Cache on this sheet is 8 MB L3.

Intel Xeon E3-1225 v5 specifications: Cache
L3 cache	8 MB
Total cache	8 MB

Memory

Intel Xeon E3-1225 v5 addresses 64 GB across 2 memory channels.

Intel Xeon E3-1225 v5 specifications: Memory
Supported types	DDR4
Max capacity	64 GB
Channels	2

Package and power

Intel Xeon E3-1225 v5 uses the FCLGA1151 socket and a 80 W TDP.

Intel Xeon E3-1225 v5 specifications: Package and power
Socket	FCLGA1151
TDP	80 W
PCIe	Revision 3.0, 16 lanes

Integrated graphics

Intel Xeon E3-1225 v5 includes Intel HD Graphics P530.

Intel Xeon E3-1225 v5 specifications: Integrated graphics
Integrated graphics	Intel HD Graphics P530

Market

Intel Xeon E3-1225 v5 launched October 1, 2015.

Intel Xeon E3-1225 v5 specifications: Market
Launch date	October 1, 2015
Model	E3-1225V5

Features

Intel Xeon E3-1225 v5 records 4 instruction sets on this sheet.

Intel Xeon E3-1225 v5 specifications: Features
Instruction sets	AVX264-bit (x86-64)SSE4.1SSE4.2
Security	Boot GuardHardware RNGOS Guard
Virtualization	Extended Page Tables (EPT)VT-d (DMA Remapping)VT-x (Hardware Virtualization)

Compatibility

Compatibility
Socket	FCLGA1151
Board	A shared socket is not automatic compatibility. Check the motherboard CPU list and BIOS revision.
Memory	DDR4, up to 64 GB
Graphics	Intel HD Graphics P530

A shared socket is not automatic compatibility. Boards often need a BIOS update before a newer chip in the same socket will post.

Cooler clearance, VRM quality, and power limits matter as much as the socket name.

Read the memory list on the board. The CPU can list more standards than one motherboard will accept.

No post after a CPU swap

Clear CMOS only after you confirm the board list includes this SKU and the BIOS is new enough. A supported name on a box is not the same as a flashed board.

Sources and verification

Reviewed by Feex editorial. Last verified August 2026 Status: Partially Verified. How we research.

Feex Hardware Database · Specification source used for this sheet. CC BY 4.0.

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