Xeon E5-2666 V3 vs i7-11700T

Place in the ranking	778	843
Place by popularity	not in top-100	not in top-100
Market segment	Desktop processor	Server
Power efficiency	26.31	6.30
Architecture codename	Rocket Lake (2021)	Haswell-EP (2014−2015)
Release date	16 March 2021 (3 years ago)	13 November 2014 (9 years ago)

Detailed specifications

Core i7-11700T 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 cores	8 (Octa-Core)	10 (Deca-Core)
Threads	16	20
Base clock speed	1.4 GHz	2.9 GHz
Boost clock speed	4.6 GHz	3.5 GHz
Bus rate	8 GT/s	no data
L1 cache	64K (per core)	64K (per core)
L2 cache	256K (per core)	256K (per core)
L3 cache	16 MB (shared)	25 MB (shared)
Chip lithography	14 nm	22 nm
Die size	no data	356 mm²
Maximum core temperature	100 °C	no data
Maximum case temperature (TCase)	72 °C	no data
Number of transistors	no data	2,600 million
64 bit support	+	+
Windows 11 compatibility	+	no data

Compatibility

Information on Core i7-11700T 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 configuration	1	2
Socket	FCLGA1200	2011-3
Power consumption (TDP)	35 Watt	135 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-11700T and Xeon E5-2666 V3. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512	no data
AES-NI	+	+
AVX	+	+
vPro	no data	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
TSX	+	+
Idle States	+	no data
Thermal Monitoring	+	-
SIPP	+	-
Turbo Boost Max 3.0	+	no data
Deep Learning Boost	+	-

Security technologies

Core i7-11700T and Xeon E5-2666 V3 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-11700T 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 Core i7-11700T and Xeon E5-2666 V3. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-3200	DDR3, DDR4 2133 MHz Quad-channel
Maximum memory size	128 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	50 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel UHD Graphics 750	no data
Max video memory	64 GB	no data
Quick Sync Video	+	-
Clear Video	+	no data
Clear Video HD	+	no data
Graphics max frequency	1.3 GHz	no data
Execution Units	32	no data
InTru 3D	+	no data

Graphics interfaces

Available interfaces and connections of Core i7-11700T and Xeon E5-2666 V3 integrated GPUs.

Number of displays supported

no data

Graphics image quality

Maximum display resolutions supported by Core i7-11700T and Xeon E5-2666 V3 integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	no data
Max resolution over HDMI 1.4	4096x2160@60Hz	no data
Max resolution over eDP	5120 x 3200 @60Hz	no data
Max resolution over DisplayPort	5120 x 3200 @60Hz	no data

Graphics API support

APIs supported by Core i7-11700T and Xeon E5-2666 V3 integrated GPUs, sometimes API versions are included.

DirectX	12.1	no data
OpenGL	4.5	no data

Peripherals

Specifications and connection of peripherals supported by Core i7-11700T and Xeon E5-2666 V3.

PCIe version	4.0	3.0
PCI Express lanes	20	40

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.

i7-11700T 10.10
+8.4%

Xeon E5-2666 V3 9.32

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.

i7-11700T 15457
+8.3%

Xeon E5-2666 V3 14269

Gaming performance

Pros & cons summary

Performance score	10.10	9.32
Recency	16 March 2021	13 November 2014
Physical cores	8	10
Threads	16	20
Chip lithography	14 nm	22 nm
Power consumption (TDP)	35 Watt	135 Watt

i7-11700T has a 8.4% higher aggregate performance score, an age advantage of 6 years, a 57.1% more advanced lithography process, and 285.7% lower power consumption.

Xeon E5-2666 V3, on the other hand, has 25% more physical cores and 25% more threads.

Given the minimal performance differences, no clear winner can be declared between Core i7-11700T and Xeon E5-2666 V3.

Note that Core i7-11700T is a desktop processor while Xeon E5-2666 V3 is a server/workstation one.

Should you still have questions on choice between Core i7-11700T and Xeon E5-2666 V3, ask them in Comments section, and we shall answer.