EPYC 9645 vs i3-8121U

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Core i3-1005G1 Core i3-1115G4 Core i3-1215U Core i3-1315U Core i3-5005U Core i3-6006U Core i3-8100B Core i3-8109U Core i3-8121U Core i3-8130U Core i3-8145U Core i3-8145UE
VS
EPYC 7551P EPYC 9124 EPYC 9645 EPYC 9654 EPYC 9655P EPYC 9684X EPYC 9754 EPYC 9965

Contents

i3-8121U i3-8121U
EPYC 9645 EPYC 9645

Primary details

Comparing Core i3-8121U and EPYC 9645 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking1688not rated
Place by popularitynot in top-100not in top-100
Market segmentLaptopServer
SeriesIntel Core i3no data
Power efficiency9.33no data
Architecture codenameCoffee Lake-U (2018−2019)Turin (2024)
Release date15 May 2018 (6 years ago)10 October 2024 (less than a year ago)
Launch price (MSRP)no data$11,048

Detailed specifications

Core i3-8121U 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 cores2 (Dual-core)96
Threads4192
Base clock speed2.2 GHz2.3 GHz
Boost clock speed3.2 GHz3.7 GHz
Bus typeOPIno data
Bus rate4 GT/sno data
Multiplier22no data
L1 cache128 KB80 KB (per core)
L2 cache512 KB1 MB (per core)
L3 cache4 MB (shared)256 MB (shared)
Chip lithography10 nm3 nm
Die size123 mm2no data
Maximum core temperature105 °Cno data
Maximum case temperature (TCase)72 °Cno data
64 bit support++
Windows 11 compatibility-no data

Compatibility

Information on Core i3-8121U 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
SocketIntel BGA1440SP5
Power consumption (TDP)15 Watt320 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i3-8121U and EPYC 9645. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512no data
AES-NI++
AVX++
vPro-no data
Enhanced SpeedStep (EIST)+no data
QuickAssist-no data
Speed Shift+no data
My WiFi+no data
Turbo Boost Technology2.0no data
Hyper-Threading Technology+no data
Idle States+no data
Thermal Monitoring+-
Flex Memory Access+no data
Smart Response+no data
Demand Based Switching-no data
HD Audio+no data
RST+no data
Precision Boost 2no data+

Security technologies

Core i3-8121U and EPYC 9645 technologies aimed at improving security, for example, by protecting against hacks.

TXT-no data
EDB+no data
Secure Key+no data
MPX+-
SGX-no data
OS Guard+no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i3-8121U and EPYC 9645 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i3-8121U and EPYC 9645. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4DDR5
Maximum memory size32 GBno data
Max memory channels2no data
Maximum memory bandwidth38.397 GB/sno data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardIris Pro PlusN/A

Peripherals

Specifications and connection of peripherals supported by Core i3-8121U and EPYC 9645.

PCIe version3.05.0
PCI Express lanes16128

Pros & cons summary

Recency 15 May 2018 10 October 2024
Physical cores 2 96
Threads 4 192
Chip lithography 10 nm 3 nm
Power consumption (TDP) 15 Watt 320 Watt

i3-8121U has 2033.3% lower power consumption.

EPYC 9645, on the other hand, has an age advantage of 6 years, 4700% more physical cores and 4700% more threads, and a 233.3% more advanced lithography process.

We couldn't decide between Core i3-8121U and EPYC 9645. We've got no test results to judge.

Be aware that Core i3-8121U is a notebook processor while EPYC 9645 is a server/workstation one.

Should you still have questions on choice between Core i3-8121U and EPYC 9645, 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.

Intel Core i3-8121U
Core i3-8121U
AMD EPYC 9645
EPYC 9645
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Community ratings

Here you can see how users rate the processors, as well as rate them yourself.

3.3 3 votes

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Questions & comments

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