Intel Core i5-7640X серии X vs Intel Core i9-7900X серии X: comparison

Comparison of Intel Core i5-7640X серии X and Intel Core i9-7900X серии X: key differences and a full specification table.

Key differences

Intel Core i5-7640X серии X has a higher base clock (4 GHz vs 3.3 GHz) and a lower TDP (112 W vs 140 W).

At the same time, Intel Core i9-7900X серии X has more cores (10 vs 4), a higher maximum clock (4.3 GHz vs 4.2 GHz), a higher maximum memory size (128 GB vs 64 GB) and more memory channels (4 vs 2).

Both processors match on: process node (14 nm), PCIe version (3).

These are specification values: they show differences between the models but do not determine a performance winner. For a specific workload, rely on independent benchmarks.

Key specifications

ParameterIntel Core i5-7640X серии XIntel Core i9-7900X серии X
Cores / threads 4 10 / 20
Max boost clock 4.2 GHz 4.3 GHz
L3 cache — 13.75 MB
TDP 112 W 140 W
Process 14 nm 14 nm

Full specification table

Differing values are highlighted. This is not a better/worse rating: numbers from different architectures are not always comparable.

Parameter Intel Core i5-7640X серии X Intel Core i9-7900X серии X
General
Model i5-7640X i9-7900X
Codename Kaby Lake Skylake
Segment Desktop Desktop
Product line Процессоры Intel Core серии X Процессоры Intel Core серии X
Process 14 nm 14 nm
Launch date Q2 2017 Q2 2017
Status Discontinued Discontinued
Servicing status — Baseline Servicing
End of servicing updates — 12/31/2023
Embedded options available No No
Box contents Please note: The boxed product does not include a fan or heat sink Please note: The boxed product does not include a fan or heat sink
CPU
Cores 4 10
Threads — 20
Multithreading (SMT/HT) — Yes
Base clock 4 GHz 3.3 GHz
Max boost clock 4.2 GHz 4.3 GHz
Turbo Boost Max 3.0 frequency — 4.5 GHz
Turbo Boost 2.0 frequency 4.2 GHz —
L3 cache — 13.75 MB
Cache (level unspecified) 6 MB —
Bus speed 8 GT/s 8 GT/s
TDP 112 W 140 W
Turbo Boost Yes (2) Yes (2)
64-bit support Yes Yes
Instruction set width 64 bit 64 bit
Instruction set extensions SSE4.1, SSE4.2, AVX2 SSE4.1, SSE4.2, AVX2, AVX-512
QPI links 0 0
Memory
Max memory size 64 GB 128 GB
Memory types DDR4 DDR4
Memory channels 2 4
Max memory bandwidth 42 GB/s 85 GB/s
ECC memory supported No No
I/O and interfaces
PCI Express revision 3 3
PCI Express lanes 16 44
PCI Express configurations Up to 1x16, 2x8, 1x8+2x4 —
Scalability 1S Only 1S Only
Package and thermal
Sockets supported FCLGA2066 FCLGA2066
Max CPU configuration 1 1
TJUNCTION 100 °C 95 °C
Thermal solution specification PCG 2017X PCG 2017X
Security and virtualization
Virtualization (VT-x / AMD-V) Yes Yes
Virtualization for Directed I/O (VT-d) Yes Yes
AES-NI Yes Yes
Execute Disable Bit — Yes
Technologies
Enhanced SpeedStep — Yes
Turbo Boost Max 3.0 — Yes
Optane Memory Supported Yes Yes
AVX-512 FMA units — 2

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