i9-11900KF vs Xeon E7-8870

Primary details

Comparing Xeon E7-8870 and Core i9-11900KF processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	not rated	425
Place by popularity	not in top-100	not in top-100
Market segment	Server	Desktop processor
Series	Intel Xeon E7	no data
Power efficiency	no data	11.92
Architecture codename	Westmere-EX (2011)	Rocket Lake (2021)
Release date	5 April 2011 (13 years ago)	16 March 2021 (3 years ago)
Launch price (MSRP)	$4,616	no data

Detailed specifications

Xeon E7-8870 and Core i9-11900KF 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	10 (Deca-Core)	8 (Octa-Core)
Threads	20	16
Base clock speed	2.4 GHz	3.5 GHz
Boost clock speed	2.8 GHz	5.2 GHz
Bus type	QPI	no data
Bus rate	6.4 GT/s	8 GT/s
Multiplier	18	no data
L1 cache	640 KB	64K (per core)
L2 cache	2.5 MB	256K (per core)
L3 cache	30 MB (shared)	16 MB (shared)
Chip lithography	32 nm	14 nm
Die size	513 mm2	no data
Maximum core temperature	69 °C	100 °C
Maximum case temperature (TCase)	no data	72 °C
Number of transistors	2600 Million	no data
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	-	+

Compatibility

Information on Xeon E7-8870 and Core i9-11900KF 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	8 (Multiprocessor)	1
Socket	FCLGA1567,LGA1567	FCLGA1200
Power consumption (TDP)	130 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E7-8870 and Core i9-11900KF. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
AES-NI	+	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	1.0	2.0
Hyper-Threading Technology	+	+
TSX	-	+
Idle States	no data	+
Thermal Monitoring	+	+
Turbo Boost Max 3.0	no data	+
Deep Learning Boost	-	+

Security technologies

Xeon E7-8870 and Core i9-11900KF technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E7-8870 and Core i9-11900KF are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E7-8870 and Core i9-11900KF. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR4-3200
Maximum memory size	4 TB	128 GB
Max memory channels	4	2
Maximum memory bandwidth	34.113 GB/s	50 GB/s
ECC memory support	+	-

Peripherals

Specifications and connection of peripherals supported by Xeon E7-8870 and Core i9-11900KF.

PCIe version	no data	4.0
PCI Express lanes	no data	20

Pros & cons summary

---

Recency	5 April 2011	16 March 2021
Physical cores	10	8
Threads	20	16
Chip lithography	32 nm	14 nm
Power consumption (TDP)	130 Watt	125 Watt

---

Should you still have questions on choice between Xeon E7-8870 and Core i9-11900KF, 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.

---