Xeon E3-1265L v3

Details and Benchmarks for Intel Xeon E3-1265L v3

Sysbuilds Alpha Stage!

Please take all results with a big grain of salt. Sysbuilds is in alpha stage at the moment which can lead to wrong data, strange counting errors, silly results and more. This site is under active development.

Benchmark Results

Combined benchmark scores based on multiple data points, giving a quick overview of this processor's performance.

Overall Score

Overall score for Xeon E3-1265L v3 based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

5,260 Rank: 647
Rank Name Score Visual
643 Xeon E3-1231 v3 5,268
+0.2%
644 Core i7-6770HQ 5,264
+0.1%
645 Xeon Silver 4215 5,262
+0%
646 Core i5-6600T 5,261
+0%
647 Xeon E3-1265L v3 5,260
648 Intel Core i7-3770K 5,259
+-0%
649 Core i7-9850H 5,258
+-0%
650 Core i5-9400F 5,257
-0.1%
651 Core i7-7700HQ 5,256
-0.1%
652 Core i5-7287U 5,256
-0.1%

View full ranking →

Multicore Score

Multicore performance score for Xeon E3-1265L v3 based on multi-threaded benchmark results.

5,022 Rank: 625
Rank Name Score Visual
621 Xeon Silver 4114 5,023
+0%
622 Core i7-8650U 5,023
+0%
623 Celeron N2820 5,023
+0%
624 Ryzen 3 PRO 5475U 5,023
+0%
625 Xeon E3-1265L v3 5,022
626 Ryzen 3 PRO 4350GE 5,022
+0%
627 Ryzen 3 PRO 2200GE 5,020
+-0%
628 Ryzen 3 PRO 4350G 5,019
-0.1%
629 Core i7-9750H 5,018
-0.1%
630 Core i5-6585R 5,018
-0.1%

View full ranking →

Singlecore Score

Single-core performance score for Xeon E3-1265L v3 based on single-threaded benchmark results.

5,419 Rank: 623
Rank Name Score Visual
619 Core i5-8265U 5,420
+0%
620 Ryzen 7 4800H 5,420
+0%
621 Core i3-7100T 5,419
+0%
622 Core i3-6300T 5,419
+0%
623 Xeon E3-1265L v3 5,419
624 Core i5-10500T 5,418
+-0%
625 Xeon W-2133 5,416
-0.1%
626 Ryzen 3 PRO 2200G 5,416
-0.1%
627 Ryzen 3 3200G 5,416
-0.1%
628 Xeon E3-1285L v4 5,416
-0.1%

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Workload Scores

Performance scores grouped by workload type, normalized and aggregated from multiple raw benchmark results.

Number Crunching

Aggregated score for Xeon E3-1265L v3 based on integer math, floating point math, and prime number computation benchmarks.

4,661 Rank: 787
Rank Name Score Visual
783 Xeon E3-1225 v6 4,662
+0%
784 Xeon D-1622 4,662
+0%
785 Core i7-3940XM 4,662
+0%
786 Xeon E3-1220 v3 4,661
+0%
787 Xeon E3-1265L v3 4,661
788 Xeon E3-1220 v5 4,660
+-0%
789 Xeon E5-1603 v4 4,660
+-0%
790 Core i7-8650U 4,660
+-0%
791 Core i5-4690 4,660
+-0%
792 Core i7-5700HQ 4,660
+-0%

View full ranking →

Data Processing

Aggregated score for Xeon E3-1265L v3 based on data encryption, data compression, and string sorting benchmarks.

4,655 Rank: 787
Rank Name Score Visual
783 Xeon E3-1245 4,656
+0%
784 Xeon E-2124G 4,655
+0%
785 Core i5-7600K 4,655
+0%
786 Atom C3758 4,655
+0%
787 Xeon E3-1265L v3 4,655
788 Core i7-4960HQ 4,653
+-0%
789 Core i7-4900MQ 4,653
+-0%
790 Core i7-4810MQ 4,652
-0.1%
791 Core i7-3720QM 4,650
-0.1%
792 Core i7-4870HQ 4,650
-0.1%

View full ranking →

Physics & Compute

Aggregated score for Xeon E3-1265L v3 based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

4,690 Rank: 752
Rank Name Score Visual
748 Core i5-4570R 4,694
+0.1%
749 Core i5-6402P 4,693
+0.1%
750 Xeon E3-1225 v3 4,692
+0%
751 Core i5-4690 4,691
+0%
752 Xeon E3-1265L v3 4,690
753 Ryzen 5 7520U 4,690
+0%
754 Core i3-8100T 4,689
+-0%
755 Core i5-7440EQ 4,688
+-0%
756 Xeon E3-1220 v3 4,688
+-0%
757 Core i7-4910MQ 4,688
+-0%

View full ranking →

Xeon E3-1265L v3 Details

The Intel Xeon E3-1265L v3 stands as a capable server and workstation processor from the Haswell-WS generation, released in June 2013. While it's now over a decade old, its performance still holds up in specific workloads, particularly when compared to lower-tier modern CPUs. At the time of its launch, it offered a compelling blend of performance and enterprise features, such as ECC memory support and virtualization technologies, making it a solid choice for business environments. As of March 2026, this processor is no longer relevant for high-end computing, but it remains a viable option for legacy systems or budget-friendly workstations requiring integrated graphics and reliable single-threaded performance.

The Xeon E3-1265L v3 is built on Intel's 22 nm process and features a 4-core, 4-thread design with a base frequency of 2.5 GHz and a turbo boost up to 3.7 GHz. It leverages Intel's Hyper-Threading technology to effectively double the thread count, allowing it to handle multitasking efficiently. The processor includes 8 MB of L3 cache, which helps improve data access speed for intensive applications. It operates at a TDP of 45 W, making it relatively energy-efficient for its class, and uses the FCLGA1155 socket. It supports dual-channel DDR3 memory at speeds up to 1600 MHz, with a maximum capacity of 32 GB and a memory bandwidth of 25.6 GB/s.

Integrated into the Xeon E3-1265L v3 is the Intel HD Graphics 2500, which runs at a base frequency of 650 MHz and can boost to 1100 MHz. This GPU supports up to three displays and is sufficient for basic multimedia and office use. The processor supports a range of advanced instruction sets, including AVX, AVX2, SSE, and AES-NI, enabling it to perform well in encryption, media encoding, and scientific computing. It also supports hardware virtualization through VT-x and VT-d, along with features like Intel vPro and TXT, making it suitable for secure, managed environments.

In benchmark testing, the Xeon E3-1265L v3 achieves an Overall Score of 5260, ranking #647 out of 2060 processors, with a Singlecore Score of 5419 (#621) and a Multicore Score of 5022 (#625). Its single-core performance places it just behind several modern mid-range mobile and desktop CPUs, such as the Core i5-8265U and Ryzen 7 4800H. However, its multicore performance is slightly lower than some current mainstream processors, such as the Ryzen 3 PRO 5475U and Core i7-8650U, indicating that while it remains competitive in single-threaded tasks, it falls behind in multi-threaded workloads. Its passmark scores reflect a similar trend, with strong performance in data processing and physics computing but not enough to challenge the top-tier CPUs.

When compared to its closest competitors, the Xeon E3-1265L v3 is outperformed by several modern processors in the multicore domain, such as the Core i7-9850H and Core i5-9400F, which have higher base and turbo frequencies and more advanced architectures. However, its single-core performance is still competitive with many mid-tier mobile processors. This makes it a suitable choice for applications that rely heavily on single-threaded performance, such as legacy software, certain database operations, or light virtualization. The processor's age, however, limits its relevance in modern computing, where advancements in architecture and memory bandwidth have significantly improved overall system performance.

In conclusion, the Intel Xeon E3-1265L v3 is best suited for legacy server and workstation environments where integrated graphics, ECC memory support, and virtualization features are critical. While it no longer competes with modern CPUs in terms of raw performance, its efficiency and feature set make it a reliable option for specific use cases. As of March 2026, users seeking high-end performance should consider newer processors, but those maintaining older systems may find the E3-1265L v3 a practical and cost-effective solution.
Frequently Compared

Intel Xeon D-1539 14 views

AMD Ryzen 7 2700X 2 views

AMD Ryzen 3 PRO 2200GE 1 view

AMD Ryzen 9 PRO 3900 1 view

AMD Ryzen 5 PRO 3500U 1 view

Intel Xeon Silver 4214 1 view

Intel Xeon Silver 4208 1 view

Intel Xeon Silver 4116T 1 view

Intel Xeon Silver 4114 1 view

Intel Xeon Silver 4110 1 view

Intel Xeon E3-1265L v3

Main Specifications

Designer: Intel
Name: Xeon E3-1265L v3
Model Number: i5-3470
Cores: 4
Threads: 4
Base Frequency: 3200 MHz
Clock Multiplier: 25x (locked)
Core Name: Haswell-WS
Socket: FCLGA1155
Package: FC-LGA12C
Target Segment: Workstation
Max CPUs: 1
TDP: 77 W

Cache Specifications

L1 Cache: 62.464 KiB
L2 Cache: 0.244 MiB
L3 Cache: 7.629 MiB

Memory Specifications

Supported Memory Type: DDR3 1333/1600
Memory Channels: 2
Maximum Memory: 0 GB
Maximum Bandwidth: 25.6 GB/s
ECC Support: No

PCI-Express Specifications

PCIe Revision: 3.0
PCIe Lanes: 40
PCIe Configuration: up to 1x16, 2x8, 1x8 & 2x4

Integrated Graphics

GPU: HD Graphics 2500
GPU Designer: Intel
GPU Max Frequency: 1100 MHz

Physical Specifications

Process: 22 nm
Die Area: 160 mm²
Manufacturer: Intel
Word Size: 64-bit

CPU Features

MMX SSE SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 AVX AVX2 BMI1 BMI2 FMA3 AES F16C x86-64 HT EIST TXT vPro VT-x VT-d EPT Secure Key SMEP SIPP IPT TSX Flex Memory FMA
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