Xeon E5-2666 V3 vs W-2295

#ad 
Buy on Amazon
VS

Aggregate performance score

Xeon W-2295
2019
18 cores / 36 threads, 165 Watt
19.35
+117%
Xeon E5-2666 V3
2014
10 cores / 20 threads, 135 Watt
8.92

Xeon W-2295 outperforms Xeon E5-2666 V3 by a whopping 117% based on our aggregate benchmark results.

Primary details

Comparing Xeon W-2295 and Xeon E5-2666 V3 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking297866
Place by popularitynot in top-100not in top-100
Market segmentServerServer
Power efficiency11.106.25
Architecture codenameno dataHaswell-EP (2014−2015)
Release date1 October 2019 (5 years ago)13 November 2014 (10 years ago)

Detailed specifications

Xeon W-2295 and Xeon E5-2666 V3 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 cores18 (Octadeca-Core)10 (Deca-Core)
Threads3620
Base clock speed3 GHz2.9 GHz
Boost clock speed4.8 GHz3.5 GHz
Bus rate8 GT/sno data
L1 cacheno data64K (per core)
L2 cacheno data256K (per core)
L3 cache24.75 MB25 MB (shared)
Chip lithography14 nm22 nm
Die sizeno data356 mm2
Maximum core temperature61 °Cno data
Number of transistorsno data2,600 million
64 bit support++
Windows 11 compatibility+no data

Compatibility

Information on Xeon W-2295 and Xeon E5-2666 V3 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 configuration12
SocketFCLGA20662011-3
Power consumption (TDP)165 Watt135 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon W-2295 and Xeon E5-2666 V3. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512no data
AES-NI++
AVX-+
vProno data+
Enhanced SpeedStep (EIST)++
Speed Shift+no data
Turbo Boost Technology2.0no data
Hyper-Threading Technology+no data
TSX++
Idle States+no data
Thermal Monitoring+-
Demand Based Switching+no data
PAE46 Bitno data
Turbo Boost Max 3.0+no data
Deep Learning Boost+-

Security technologies

Xeon W-2295 and Xeon E5-2666 V3 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon W-2295 and Xeon E5-2666 V3 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon W-2295 and Xeon E5-2666 V3. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4-2933DDR3, DDR4 2133 MHz Quad-channel
Maximum memory size1 TBno data
Max memory channels4no data
Maximum memory bandwidth93.85 GB/sno data
ECC memory support+-

Peripherals

Specifications and connection of peripherals supported by Xeon W-2295 and Xeon E5-2666 V3.

PCIe version3.03.0
PCI Express lanes4840

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 W-2295 19.35
+117%
Xeon E5-2666 V3 8.92

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 W-2295 30735
+117%
Xeon E5-2666 V3 14167

Gaming performance

Pros & cons summary


Performance score 19.35 8.92
Recency 1 October 2019 13 November 2014
Physical cores 18 10
Threads 36 20
Chip lithography 14 nm 22 nm
Power consumption (TDP) 165 Watt 135 Watt

Xeon W-2295 has a 116.9% higher aggregate performance score, an age advantage of 4 years, 80% more physical cores and 80% more threads, and a 57.1% more advanced lithography process.

Xeon E5-2666 V3, on the other hand, has 22.2% lower power consumption.

The Xeon W-2295 is our recommended choice as it beats the Xeon E5-2666 V3 in performance tests.


Should you still have questions on choice between Xeon W-2295 and Xeon E5-2666 V3, 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 W-2295
Xeon W-2295
Intel Xeon E5-2666 V3
Xeon E5-2666 V3

Similar processor comparisons

We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.

Community ratings

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


4.5 31 vote

Rate Xeon W-2295 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
4.4 3196 votes

Rate Xeon E5-2666 V3 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about Xeon W-2295 or Xeon E5-2666 V3, agree or disagree with our judgements, or report an error or mismatch.