Ultra 7 265 vs Xeon E5-2643 v3

Primary details

Comparing Xeon E5-2643 v3 and Core Ultra 7 265 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1047	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Server	Desktop processor
Power efficiency	4.61	no data
Architecture codename	Haswell-EP (2014−2015)	Arrow Lake-S (2024−2025)
Release date	8 September 2014 (10 years ago)	January 2025

Detailed specifications

Xeon E5-2643 v3 and Core Ultra 7 265 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	6 (Hexa-Core)	20 (Icosa-Core)
Threads	12	20
Base clock speed	3.4 GHz	2.4 GHz
Boost clock speed	3.7 GHz	5.3 GHz
Bus rate	9.6 GT/s	no data
L1 cache	64K (per core)	112 KB (per core)
L2 cache	256K (per core)	3 MB (per core)
L3 cache	20 MB (shared)	30 MB (shared)
Chip lithography	22 nm	3 nm
Die size	356 mm2	243 mm2
Maximum core temperature	77 °C	no data
Number of transistors	2,600 million	17,800 million
64 bit support	+	+
Windows 11 compatibility	-	no data

Compatibility

Information on Xeon E5-2643 v3 and Core Ultra 7 265 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	1851
Power consumption (TDP)	135 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-2643 v3 and Core Ultra 7 265. You'll probably need this information if you require some particular technology.

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

Security technologies

Xeon E5-2643 v3 and Core Ultra 7 265 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	no data
Secure Key	+	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-2643 v3 and Core Ultra 7 265 are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-2643 v3 and Core Ultra 7 265. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-1600, DDR4-1866, DDR4-2133	DDR5
Maximum memory size	768 GB	no data
Max memory channels	4	no data
Maximum memory bandwidth	68 GB/s	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

Arc Xe2 Graphics 64EU

Peripherals

Specifications and connection of peripherals supported by Xeon E5-2643 v3 and Core Ultra 7 265.

PCIe version	3.0	5.0
PCI Express lanes	40	20

Pros & cons summary

---

Physical cores	6	20
Threads	12	20
Chip lithography	22 nm	3 nm
Power consumption (TDP)	135 Watt	65 Watt

---

Should you still have questions on choice between Xeon E5-2643 v3 and Core Ultra 7 265, 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.

---