Ultra 7 265K vs Xeon E5-1603

Aggregate performance score

Xeon E5-1603
2012
4 cores / 4 threads, 130 Watt
2.18
Core Ultra 7 265K
2024
20 cores / 20 threads, 125 Watt
37.30
+1611%

Core Ultra 7 265K outperforms Xeon E5-1603 by a whopping 1611% based on our aggregate benchmark results.

Primary details

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

Place in the ranking184086
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data94.74
Market segmentServerDesktop processor
Power efficiency1.5928.24
Architecture codenameno dataArrow Lake-S (2024−2025)
Release date1 January 2012 (12 years ago)24 October 2024 (less than a year ago)
Launch price (MSRP)no data$394

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Xeon E5-1603 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 cores4 (Quad-Core)20 (Icosa-Core)
Threads420
Base clock speed2.8 GHz3.9 GHz
Boost clock speedno data5.5 GHz
Bus rate0 GT/sno data
L1 cacheno data112 KB (per core)
L2 cacheno data3 MB (per core)
L3 cache10 MB30 MB (shared)
Chip lithography32 nm3 nm
Die sizeno data243 mm2
Maximum core temperature64 °Cno data
Number of transistorsno data17,800 million
64 bit support++
Windows 11 compatibility-no data
Unlocked multiplier-+
VID voltage range0.6V - 1.35Vno data

Compatibility

Information on Xeon E5-1603 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 configuration11
SocketFCLGA20111851
Power consumption (TDP)130 Watt125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-1603 and Core Ultra 7 265K. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® AVXno 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

Security technologies

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

TXT++
EDB+no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-1603 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 and Core Ultra 7 265K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3-800, DDR3-1066DDR5 Depends on motherboard
Maximum memory size375 GBno data
Max memory channels4no data
Maximum memory bandwidth31.4 GB/sno data
ECC memory support+-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataArc Xe2 Graphics 64EU

Peripherals

Specifications and connection of peripherals supported by Xeon E5-1603 and Core Ultra 7 265K.

PCIe version3.05.0
PCI Express lanes4020

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.

Xeon E5-1603 2.18
Ultra 7 265K 37.30
+1611%

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Xeon E5-1603 3463
Ultra 7 265K 59242
+1611%

Gaming performance

Pros & cons summary


Performance score 2.18 37.30
Recency 1 January 2012 24 October 2024
Physical cores 4 20
Threads 4 20
Chip lithography 32 nm 3 nm
Power consumption (TDP) 130 Watt 125 Watt

Ultra 7 265K has a 1611% higher aggregate performance score, an age advantage of 12 years, 400% more physical cores and 400% more threads, a 966.7% more advanced lithography process, and 4% lower power consumption.

The Core Ultra 7 265K is our recommended choice as it beats the Xeon E5-1603 in performance tests.

Be aware that Xeon E5-1603 is a server/workstation processor while Core Ultra 7 265K is a desktop one.


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

Vote for your favorite

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Intel Xeon E5-1603
Xeon E5-1603
Intel Core Ultra 7 265K
Core Ultra 7 265K

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Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


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Questions & comments

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