# Intel Xeon E3-1275L v3 Server CPU: Intel Also called intel xeon e3-1275l v3, xeon e3-1275l v3, e3-1275lv3, xeon-e3-1275l-v3 Intel, Server CPU, Haswell Intel Xeon E3 server processor on Haswell, with 4 cores and 8 threads and 8 MB L3 at 45 W TDP on a 22 nm process addressing up to 32 GB and Intel HD Graphics for 4th Generation Intel Processors. ## What you need to know Intel Xeon E3-1275L v3 is a legacy server cpu. Intel Xeon E3-1275L v3 launched in April 1, 2014., It has 4 cores and 8 threads on Haswell, dropping into the FCLGA1150 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**: 12 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 12 years old**: **Legacy.** Launched April 1, 2014. 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? Haswell 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 8 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 45 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 E3-1275L v3 is built on Haswell using a 22 nm process. | Manufacturer | Intel | | --------------------- | --------------------------------- | | Family | Xeon E3 | | Architecture | Haswell | | Generation | Intel Xeon Processor E3 v3 Family | | Manufacturing process | 22 nm | | Segment | Server | ### Cores and threads Intel Xeon E3-1275L v3 has 4 cores and 8 threads. | Cores | 4 | | ------- | - | | Threads | 8 | ### Clock speeds Base clock is 2.7 GHz. Boost reaches 3.9 GHz. | Base frequency | 2.7 GHz | | -------------- | ------- | | Max boost | 3.9 GHz | ### Cache Cache on this sheet is 8 MB L3. | L3 cache | 8 MB | | ----------- | ---- | | Total cache | 8 MB | ### Memory Intel Xeon E3-1275L v3 addresses 32 GB across 2 memory channels. | Supported types | DDR3 | | --------------- | ----- | | Max capacity | 32 GB | | Channels | 2 | ### Package and power Intel Xeon E3-1275L v3 uses the FCLGA1150 socket and a 45 W TDP. | Socket | FCLGA1150 | | ------ | ---------------------- | | TDP | 45 W | | PCIe | Revision 3.0, 16 lanes | ### Integrated graphics Intel Xeon E3-1275L v3 includes Intel HD Graphics for 4th Generation Intel Processors. | Integrated graphics | Intel HD Graphics for 4th Generation Intel Processors | | ------------------- | ----------------------------------------------------- | ### Market Intel Xeon E3-1275L v3 launched April 1, 2014. | Launch date | April 1, 2014 | | ----------- | ------------- | | Model | E3-1275LV3 | ### Features Intel Xeon E3-1275L v3 records 4 instruction sets on this sheet. | Instruction sets | AVX264-bit (x86-64)SSE4.1SSE4.2 | | ---------------- | ---------------------------------------------------------------------------- | | Security | Hardware RNGOS Guard | | Virtualization | Extended Page Tables (EPT)VT-d (DMA Remapping)VT-x (Hardware Virtualization) | ## Compatibility | Socket | FCLGA1150 | | -------- | ------------------------------------------------------------------------------------------------- | | Board | A shared socket is not automatic compatibility. Check the motherboard CPU list and BIOS revision. | | Memory | DDR3, up to 32 GB | | Graphics | Intel HD Graphics for 4th Generation Intel Processors | 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. ## Related These entities connect to this article. Type is shown on every link. [Processors: Hardware](https://feex.it/wiki/hardware/cpu) ## Sources and verification Reviewed by Feex editorial. Last verified August 2026 Status: Partially Verified. [How we research](https://feex.it/wiki/research). - [Feex Hardware Database ](https://foxhole.feex.it/cpu/intel-xeon-e3-1275l-v3)ยท Specification source used for this sheet. CC BY 4.0. ## Was this article useful? A yes or no is enough. Pick a reason if you want, or add a short note. Quick facts The short identity of this page. Specs, sources, and the full story stay in the article. - **Manufacturer**: Intel **Family**: Xeon E3 **Architecture**: Haswell **Socket**: FCLGA1150 **Launch**: 2014 **Status**: Legacy Partially Verified: Last verified August 2026 --- Source: [Canonical Feex Wiki page](https://feex.it/wiki/hardware/cpu/intel-xeon-e3-1275l-v3/) [Developer guide](https://feex.it/wiki/developers/) | [API policy](https://feex.it/developers/api-policy/) | [Agent guidance](https://feex.it/wiki/llms.txt)