Ultra 7 265K vs Xeon E5-1603 v4

Primary details

Comparing Xeon E5-1603 v4 and Core Ultra 7 265K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1638	83
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	90.90
Market segment	Server	Desktop processor
Series	Intel Xeon E5	no data
Power efficiency	2.02	28.40
Architecture codename	Broadwell (2015−2019)	Arrow Lake-S (2024−2025)
Release date	20 June 2016 (8 years ago)	24 October 2024 (recently)
Launch price (MSRP)	no data	$394

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Xeon E5-1603 v4 and Core Ultra 7 265K 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)	20 (Icosa-Core)
Threads	4	20
Base clock speed	2.8 GHz	3.9 GHz
Boost clock speed	2.8 GHz	5.5 GHz
Bus type	DMI 2.0	no data
Bus rate	5 GT/s	no data
Multiplier	28	no data
L1 cache	no data	112 KB (per core)
L2 cache	1 MB	3 MB (per core)
L3 cache	10 MB	30 MB (shared)
Chip lithography	14 nm	3 nm
Die size	246.24 mm2	243 mm2
Maximum core temperature	69 °C	no data
Number of transistors	3200 Million	17,800 million
64 bit support	+	+
Windows 11 compatibility	-	no data
Unlocked multiplier	-	+

Compatibility

Information on Xeon E5-1603 v4 and Core Ultra 7 265K 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	1 (Uniprocessor)	1
Socket	FCLGA2011-3	1851
Power consumption (TDP)	140 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-1603 v4 and Core Ultra 7 265K. 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	-	no data
Hyper-Threading Technology	-	no data
TSX	+	+
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	-	no data
SIPP	-	+
Demand Based Switching	+	no data
PAE	46 Bit	no data
Turbo Boost Max 3.0	-	no data

Security technologies

Xeon E5-1603 v4 and Core Ultra 7 265K technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-1603 v4 and Core Ultra 7 265K are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-1603 v4 and Core Ultra 7 265K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-1600, DDR4-1866, DDR4-2133	DDR5 Depends on motherboard
Maximum memory size	1.5 TB	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 E5-1603 v4 and Core Ultra 7 265K.

PCIe version	3.0	5.0
PCI Express lanes	40	20

Synthetic benchmark performance

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

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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.

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Pros & cons summary

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Performance score	3.04	38.22
Recency	20 June 2016	24 October 2024
Physical cores	4	20
Threads	4	20
Chip lithography	14 nm	3 nm
Power consumption (TDP)	140 Watt	125 Watt

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Should you still have questions on choice between Xeon E5-1603 v4 and Core Ultra 7 265K, ask them in Comments section, and we shall answer.

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