Xeon E7-8855 v4 vs i9-11900K

Primary details

Comparing Core i9-11900K and Xeon E7-8855 v4 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	419	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	18.17	no data
Market segment	Desktop processor	Server
Power efficiency	12.02	no data
Architecture codename	Rocket Lake (2021)	no data
Release date	16 March 2021 (3 years ago)	1 April 2016 (8 years ago)
Launch price (MSRP)	$539	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i9-11900K and Xeon E7-8855 v4 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)	14 (Tetradeca-Core)
Threads	16	28
Base clock speed	3.5 GHz	2.1 GHz
Boost clock speed	5.2 GHz	2.8 GHz
Bus rate	8 GT/s	8 GT/s
L1 cache	80 KB (per core)	no data
L2 cache	512 KB (per core)	no data
L3 cache	16 MB (shared)	35 MB
Chip lithography	14 nm	14 nm
Die size	276 mm2	no data
Maximum core temperature	100 °C	73 °C
Maximum case temperature (TCase)	72 °C	no data
64 bit support	+	+
Windows 11 compatibility	+	-
Unlocked multiplier	+	-

Compatibility

Information on Core i9-11900K and Xeon E7-8855 v4 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	8
Socket	FCLGA1200	FCLGA2011
Power consumption (TDP)	125 Watt	140 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-11900K and Xeon E7-8855 v4. 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	Intel® AVX2
AES-NI	+	+
AVX	+	-
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	+
Idle States	+	+
Thermal Monitoring	+	+
SIPP	+	-
PAE	no data	46 Bit
Turbo Boost Max 3.0	+	no data
Deep Learning Boost	+	-

Security technologies

Core i9-11900K and Xeon E7-8855 v4 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-11900K and Xeon E7-8855 v4 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i9-11900K and Xeon E7-8855 v4. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR4-1333, DDR4-1600, DDR4-1866, DDR3-1066, DDR3-1333, DDR3-1600
Maximum memory size	128 GB	3 TB
Max memory channels	2	4
Maximum memory bandwidth	50 GB/s	102 GB/s
ECC memory support	-	+

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 i9-11900K and Xeon E7-8855 v4 integrated GPUs.

Number of displays supported

3

no data

Graphics image quality

Maximum display resolutions supported by Core i9-11900K and Xeon E7-8855 v4 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 i9-11900K and Xeon E7-8855 v4 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 i9-11900K and Xeon E7-8855 v4.

PCIe version	4.0	3.0
PCI Express lanes	20	32

Pros & cons summary

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Recency	16 March 2021	1 April 2016
Physical cores	8	14
Threads	16	28
Power consumption (TDP)	125 Watt	140 Watt

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Should you still have questions on choice between Core i9-11900K and Xeon E7-8855 v4, ask them in Comments section, and we shall answer.

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