Xeon Gold 6526Y vs E5-2666 V3

VS

Aggregate performance score

Xeon E5-2666 V3
2014
10 cores / 20 threads, 135 Watt
8.92
Xeon Gold 6526Y
2023
16 cores / 32 threads, 195 Watt
28.97
+225%

Xeon Gold 6526Y outperforms Xeon E5-2666 V3 by a whopping 225% based on our aggregate benchmark results.

Primary details

Comparing Xeon E5-2666 V3 and Xeon Gold 6526Y processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking866155
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data56.09
Market segmentServerServer
Power efficiency6.2514.06
Architecture codenameHaswell-EP (2014−2015)Emerald Rapids (2023)
Release date13 November 2014 (10 years ago)14 December 2023 (1 year ago)
Launch price (MSRP)no data$1,517

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Xeon E5-2666 V3 and Xeon Gold 6526Y 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)16 (Hexadeca-Core)
Threads2032
Base clock speed2.9 GHz2.8 GHz
Boost clock speed3.5 GHz3.9 GHz
L1 cache64K (per core)80 KB (per core)
L2 cache256K (per core)2 MB (per core)
L3 cache25 MB (shared)37.5 MB (shared)
Chip lithography22 nmIntel 7 nm
Die size356 mm22x 763 mm2
Maximum case temperature (TCase)no data82 °C
Number of transistors2,600 millionno data
64 bit support++

Compatibility

Information on Xeon E5-2666 V3 and Xeon Gold 6526Y 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 configuration22
Socket2011-3FCLGA4677
Power consumption (TDP)135 Watt195 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-2666 V3 and Xeon Gold 6526Y. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataIntel® AMX, Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512
AES-NI++
AVX++
vPro++
Enhanced SpeedStep (EIST)++
Speed Shiftno data+
Turbo Boost Technologyno data2.0
Hyper-Threading Technologyno data+
TSX++
Deep Learning Boost-+

Security technologies

Xeon E5-2666 V3 and Xeon Gold 6526Y technologies aimed at improving security, for example, by protecting against hacks.

TXT++
EDBno data+
SGXno dataYes with Intel® SPS
OS Guardno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-2666 V3 and Xeon Gold 6526Y 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 Xeon Gold 6526Y. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3, DDR4 2133 MHz Quad-channelDDR5-5200
Maximum memory sizeno data4 TB
Max memory channelsno data8
ECC memory support-+

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 Xeon Gold 6526Y.

PCIe version3.05.0
PCI Express lanes4080

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
Xeon Gold 6526Y 28.97
+225%

  • Passmark

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
Xeon Gold 6526Y 46025
+225%

Gaming performance

Pros & cons summary


Performance score 8.92 28.97
Recency 13 November 2014 14 December 2023
Physical cores 10 16
Threads 20 32
Power consumption (TDP) 135 Watt 195 Watt

Xeon E5-2666 V3 has 44.4% lower power consumption.

Xeon Gold 6526Y, on the other hand, has a 224.8% higher aggregate performance score, an age advantage of 9 years, and 60% more physical cores and 60% more threads.

The Xeon Gold 6526Y is our recommended choice as it beats the Xeon E5-2666 V3 in performance tests.


Should you still have questions on choice between Xeon E5-2666 V3 and Xeon Gold 6526Y, 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.


Intel Xeon E5-2666 V3
Xeon E5-2666 V3
Intel Xeon Gold 6526Y
Xeon Gold 6526Y

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Community ratings

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4.4
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Questions & comments

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