EPYC 9645 vs i9-9920X

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Primary details

Comparing Core i9-9920X and EPYC 9645 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking430not rated
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation5.24no data
Market segmentDesktop processorServer
SeriesIntel Core i9no data
Power efficiency9.09no data
Architecture codenameSkylake (server) (2017−2018)Turin (2024)
Release date8 October 2018 (6 years ago)10 October 2024 (less than a year ago)
Launch price (MSRP)$1,189$11,048

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Core i9-9920X and EPYC 9645 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 cores12 (Dodeca-Core)96
Threads24192
Base clock speed3.5 GHz2.3 GHz
Boost clock speed4.5 GHz3.7 GHz
Bus typeDMI 3.0no data
Bus rate4 × 8 GT/sno data
Multiplier35no data
L1 cache768 KB80 KB (per core)
L2 cache12 MB1 MB (per core)
L3 cache19.25 MB (shared)256 MB (shared)
Chip lithography14 nm3 nm
Die size484 mm2no data
Maximum core temperature92 °Cno data
Maximum case temperature (TCase)72 °Cno data
64 bit support++
Windows 11 compatibility+no data
Unlocked multiplier+-

Compatibility

Information on Core i9-9920X and EPYC 9645 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 configuration1 (Uniprocessor)2
SocketFCLGA2066SP5
Power consumption (TDP)165 Watt320 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-9920X and EPYC 9645. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512no data
AES-NI++
AVX++
Enhanced SpeedStep (EIST)+no data
Turbo Boost Technology2.0no data
Hyper-Threading Technology+no data
TSX+-
Turbo Boost Max 3.0+no data
Precision Boost 2no data+

Security technologies

Core i9-9920X and EPYC 9645 technologies aimed at improving security, for example, by protecting against hacks.

EDB+no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-9920X and EPYC 9645 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 i9-9920X and EPYC 9645. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4-2666DDR5
Maximum memory size128 GBno data
Max memory channels4no data
Maximum memory bandwidth85.33 GB/sno data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardN/AN/A

Peripherals

Specifications and connection of peripherals supported by Core i9-9920X and EPYC 9645.

PCIe version3.05.0
PCI Express lanes44128

Pros & cons summary


Recency 8 October 2018 10 October 2024
Physical cores 12 96
Threads 24 192
Chip lithography 14 nm 3 nm
Power consumption (TDP) 165 Watt 320 Watt

i9-9920X has 93.9% lower power consumption.

EPYC 9645, on the other hand, has an age advantage of 6 years, 700% more physical cores and 700% more threads, and a 366.7% more advanced lithography process.

We couldn't decide between Core i9-9920X and EPYC 9645. We've got no test results to judge.

Note that Core i9-9920X is a desktop processor while EPYC 9645 is a server/workstation one.


Should you still have questions on choice between Core i9-9920X and EPYC 9645, ask them in Comments section, and we shall answer.

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Intel Core i9-9920X
Core i9-9920X
AMD EPYC 9645
EPYC 9645

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