Xeon E3-1265L v3 vs E5-2637 v2

Primary details

Comparing Xeon E5-2637 v2 and Xeon E3-1265L v3 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1396	1433
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.59	0.83
Market segment	Server	Server
Power efficiency	2.96	8.23
Architecture codename	Ivy Bridge-EP (2013)	Haswell-WS (2013−2014)
Release date	1 September 2013 (11 years ago)	2 June 2013 (11 years ago)
Launch price (MSRP)	$1,090	$710

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon E3-1265L v3 has 41% better value for money than Xeon E5-2637 v2.

Detailed specifications

Xeon E5-2637 v2 and Xeon E3-1265L v3 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	4 (Quad-Core)	4 (Quad-Core)
Threads	8	8
Base clock speed	3.5 GHz	2.5 GHz
Boost clock speed	3.8 GHz	3.7 GHz
Bus rate	8 GT/s	5 GT/s
L1 cache	64 KB (per core)	64 KB (per core)
L2 cache	256 KB (per core)	256 KB (per core)
L3 cache	10 MB (shared)	8192 KB (shared)
Chip lithography	22 nm	22 nm
Die size	160 mm2	160 mm2
Maximum core temperature	76 °C	no data
Number of transistors	1,400 million	1,400 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Xeon E5-2637 v2 and Xeon E3-1265L v3 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	2	1
Socket	FCLGA2011	FCLGA1150
Power consumption (TDP)	130 Watt	45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-2637 v2 and Xeon E3-1265L v3. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
AVX	+	+
vPro	no data	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	-	+
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	-	+
SIPP	-	+
Demand Based Switching	+	no data
PAE	46 Bit	no data
FDI	no data	+
Fast Memory Access	no data	+

Security technologies

Xeon E5-2637 v2 and Xeon E3-1265L v3 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	+	+
Identity Protection	-	+
OS Guard	+	+
Anti-Theft	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-2637 v2 and Xeon E3-1265L v3 are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-2637 v2 and Xeon E3-1265L v3. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3, DDR4
Maximum memory size	768 GB	32 GB
Max memory channels	4	2
Maximum memory bandwidth	59.7 GB/s	25.6 GB/s
ECC memory support	+	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	Intel® HD Graphics for 4th Generation Intel® Processors
Quick Sync Video	-	+
Clear Video HD	no data	+
Graphics max frequency	no data	1.2 GHz
InTru 3D	no data	+

Graphics interfaces

Available interfaces and connections of Xeon E5-2637 v2 and Xeon E3-1265L v3 integrated GPUs.

Number of displays supported

no data

3

Peripherals

Specifications and connection of peripherals supported by Xeon E5-2637 v2 and Xeon E3-1265L v3.

PCIe version	3.0	3.0
PCI Express lanes	40	16

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

---

Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

---

Pros & cons summary

---

Performance score	4.22	4.06
Recency	1 September 2013	2 June 2013
Power consumption (TDP)	130 Watt	45 Watt

---

Should you still have questions on choice between Xeon E5-2637 v2 and Xeon E3-1265L v3, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.

---