EPYC 7643 vs i9-10920X

Primary details

Comparing Core i9-10920X and EPYC 7643 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	395	39
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	6.32
Market segment	Desktop processor	Server
Series	no data	AMD EPYC
Power efficiency	9.46	20.14
Architecture codename	Cascade Lake-X (2019)	Milan (2021−2023)
Release date	19 October 2019 (5 years ago)	12 January 2021 (3 years ago)
Launch price (MSRP)	no data	$4,995

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i9-10920X and EPYC 7643 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	12 (Dodeca-Core)	48 (Octatetraconta-Core)
Threads	24	96
Base clock speed	3.5 GHz	2.3 GHz
Boost clock speed	4.8 GHz	3.6 GHz
Bus rate	8 GT/s DMI3 MHz	no data
Multiplier	no data	23
L1 cache	64K (per core)	3 MB
L2 cache	1 MB (per core)	24 MB
L3 cache	19.25 MB (shared)	256 MB (shared)
Chip lithography	14 nm	7 nm+
Die size	no data	8x 81 mm2
Maximum core temperature	94 °C	no data
Number of transistors	no data	33,200 million
64 bit support	+	+
Windows 11 compatibility	+	+
Unlocked multiplier	+	-

Compatibility

Information on Core i9-10920X and EPYC 7643 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	FCLGA2066	SP3
Power consumption (TDP)	165 Watt	225 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-10920X and EPYC 7643. 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	+	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
TSX	+	-
Turbo Boost Max 3.0	+	no data
Deep Learning Boost	+	-

Security technologies

Core i9-10920X and EPYC 7643 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-10920X and EPYC 7643 are enumerated here.

AMD-V	-	+
VT-d	+	no data
VT-x	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i9-10920X and EPYC 7643. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2933	DDR4-3200
Maximum memory size	256 GB	4 TiB
Max memory channels	4	no data
Maximum memory bandwidth	94 GB/s	204.795 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

N/A

Peripherals

Specifications and connection of peripherals supported by Core i9-10920X and EPYC 7643.

PCIe version	3.0	4.0
PCI Express lanes	48	128

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	16.80	48.79
Recency	19 October 2019	12 January 2021
Physical cores	12	48
Threads	24	96
Chip lithography	14 nm	7 nm
Power consumption (TDP)	165 Watt	225 Watt

---

Should you still have questions on choice between Core i9-10920X and EPYC 7643, 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.

---