i9-14900KF vs Xeon E5-2666 V3

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Aggregate performance score

Xeon E5-2666 V3
2014
10 cores / 20 threads, 135 Watt
8.92
Core i9-14900KF
2023
24 cores / 32 threads, 125 Watt
37.39
+319%

Core i9-14900KF outperforms Xeon E5-2666 V3 by a whopping 319% based on our aggregate benchmark results.

Primary details

Comparing Xeon E5-2666 V3 and Core i9-14900KF processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking86682
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data66.51
Market segmentServerDesktop processor
Power efficiency6.2528.29
Architecture codenameHaswell-EP (2014−2015)Raptor Lake-R (2023−2024)
Release date13 November 2014 (10 years ago)17 October 2023 (1 year ago)
Launch price (MSRP)no data$564

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Xeon E5-2666 V3 and Core i9-14900KF 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 cores10 (Deca-Core)24 (Tetracosa-Core)
Threads2032
Base clock speed2.9 GHz3.2 GHz
Boost clock speed3.5 GHz5.8 GHz
L1 cache64K (per core)80 KB (per core)
L2 cache256K (per core)2 MB (per core)
L3 cache25 MB (shared)36 MB (shared)
Chip lithography22 nmIntel 7 nm
Die size356 mm2257 mm2
Maximum core temperatureno data100 °C
Number of transistors2,600 millionno data
64 bit support++
Windows 11 compatibilityno data+
Unlocked multiplier-+

Compatibility

Information on Xeon E5-2666 V3 and Core i9-14900KF 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 configuration21
Socket2011-3FCLGA1700
Power consumption (TDP)135 Watt125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-2666 V3 and Core i9-14900KF. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI++
AVX++
vPro+no data
Enhanced SpeedStep (EIST)++
Speed Shiftno data+
Turbo Boost Technologyno data2.0
Hyper-Threading Technologyno data+
TSX++
Idle Statesno data+
Thermal Monitoring-+
Turbo Boost Max 3.0no data+
Deep Learning Boost-+

Security technologies

Xeon E5-2666 V3 and Core i9-14900KF technologies aimed at improving security, for example, by protecting against hacks.

TXT++
EDBno data+
Secure Keyno data+
OS Guardno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-2666 V3 and Core i9-14900KF are enumerated here.

VT-d++
VT-x++
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-2666 V3 and Core i9-14900KF. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3, DDR4 2133 MHz Quad-channelDDR5-5600, DDR4-3200
Maximum memory sizeno data192 GB
Max memory channelsno data2
Maximum memory bandwidthno data89.6 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataN/A

Peripherals

Specifications and connection of peripherals supported by Xeon E5-2666 V3 and Core i9-14900KF.

PCIe version3.05.0 and 4.0
PCI Express lanes4016

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 E5-2666 V3 8.92
i9-14900KF 37.39
+319%

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 E5-2666 V3 14167
i9-14900KF 59389
+319%

Gaming performance

Pros & cons summary


Performance score 8.92 37.39
Recency 13 November 2014 17 October 2023
Physical cores 10 24
Threads 20 32
Power consumption (TDP) 135 Watt 125 Watt

i9-14900KF has a 319.2% higher aggregate performance score, an age advantage of 8 years, 140% more physical cores and 60% more threads, and 8% lower power consumption.

The Core i9-14900KF is our recommended choice as it beats the Xeon E5-2666 V3 in performance tests.

Be aware that Xeon E5-2666 V3 is a server/workstation processor while Core i9-14900KF is a desktop one.


Should you still have questions on choice between Xeon E5-2666 V3 and Core i9-14900KF, ask them in Comments section, and we shall answer.

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Intel Xeon E5-2666 V3
Xeon E5-2666 V3
Intel Core i9-14900KF
Core i9-14900KF

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Community ratings

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Questions & comments

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