i9-11900KB vs Xeon E5-1660

Primary details

Comparing Xeon E5-1660 and Core i9-11900KB processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1173	496
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	3.80	17.86
Market segment	Server	Desktop processor
Power efficiency	3.86	21.01
Architecture codename	Sandy Bridge-E (2011−2013)	Tiger Lake-H (2021)
Release date	6 March 2012 (12 years ago)	May 2021 (3 years ago)
Launch price (MSRP)	$290	$539

Cost-effectiveness evaluation

Performance per price, higher is better.

i9-11900KB has 370% better value for money than Xeon E5-1660.

Detailed specifications

Xeon E5-1660 and Core i9-11900KB 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	6 (Hexa-Core)	8 (Octa-Core)
Threads	12	16
Base clock speed	3.3 GHz	3.3 GHz
Boost clock speed	3.9 GHz	4.9 GHz
Bus rate	no data	8 GT/s
L1 cache	64 KB (per core)	80K (per core)
L2 cache	256 KB (per core)	1.25 MB (per core)
L3 cache	15360 KB (shared)	24 MB (shared)
Chip lithography	32 nm	10 nm SuperFin
Die size	435 mm2	190 mm2
Maximum core temperature	64 °C	100 °C
Maximum case temperature (TCase)	no data	72 °C
Number of transistors	2,270 million	no data
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	-	+

Compatibility

Information on Xeon E5-1660 and Core i9-11900KB 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	1
Socket	FCLGA2011	FCBGA1787
Power consumption (TDP)	130 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5-1660 and Core i9-11900KB. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	+
Speed Shift	no data	+
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	+
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	-	+
Demand Based Switching	+	no data
Turbo Boost Max 3.0	no data	+
Deep Learning Boost	-	+

Security technologies

Xeon E5-1660 and Core i9-11900KB technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	no data	+
Identity Protection	-	+
SGX	no data	Yes with Intel® ME
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5-1660 and Core i9-11900KB are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5-1660 and Core i9-11900KB. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR4
Maximum memory size	256 GB	128 GB
Max memory channels	4	2
Maximum memory bandwidth	51.2 GB/s	51.2 GB/s
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	N/A	Intel® UHD Graphics for 11th Gen Intel® Processors
Quick Sync Video	-	+
Graphics max frequency	no data	1.45 GHz
Execution Units	no data	32

Graphics interfaces

Available interfaces and connections of Xeon E5-1660 and Core i9-11900KB integrated GPUs.

Number of displays supported

no data

4

Graphics image quality

Maximum display resolutions supported by Xeon E5-1660 and Core i9-11900KB integrated GPUs, including resolutions over different interfaces.

4K resolution support	no data	+
Max resolution over HDMI 1.4	no data	4096x2304@60Hz
Max resolution over eDP	no data	4096 x 2304@60Hz
Max resolution over DisplayPort	no data	7680x4320@60Hz

Graphics API support

APIs supported by Xeon E5-1660 and Core i9-11900KB integrated GPUs, sometimes API versions are included.

DirectX	no data	12
OpenGL	no data	4.6

Peripherals

Specifications and connection of peripherals supported by Xeon E5-1660 and Core i9-11900KB.

PCIe version	3.0	4.0
PCI Express lanes	40	20

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.

---

Pros & cons summary

---

Performance score	5.30	14.43
Physical cores	6	8
Threads	12	16
Chip lithography	32 nm	10 nm
Power consumption (TDP)	130 Watt	65 Watt

---

Should you still have questions on choice between Xeon E5-1660 and Core i9-11900KB, 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.

---