Intel Core i9-9940X vs Intel Core i9-7940X

Comparative analysis of Intel Core i9-9940X and Intel Core i9-7940X processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core, 3DMark Fire Strike - Physics Score.

Differences

Reasons to consider the Intel Core i9-9940X

  • CPU is newer: launch date 1 year(s) 1 month(s) later
  • Around 2% higher clock speed: 4.40 GHz vs 4.30 GHz
  • Around 3% better performance in PassMark - Single thread mark: 2477 vs 2398
  • Around 8% better performance in PassMark - CPU mark: 27350 vs 25376
  • Around 1% better performance in Geekbench 4 - Single Core: 5283 vs 5211
  • Around 5% better performance in Geekbench 4 - Multi-Core: 42106 vs 40211
Specifications (specs)
Launch date October 2018 vs September 2017
Maximum frequency 4.40 GHz vs 4.30 GHz
Benchmarks
PassMark - Single thread mark 2477 vs 2398
PassMark - CPU mark 27350 vs 25376
Geekbench 4 - Single Core 5283 vs 5211
Geekbench 4 - Multi-Core 42106 vs 40211

Reasons to consider the Intel Core i9-7940X

  • Around 16% higher maximum core temperature: 102°C vs 88°C
Maximum core temperature 102°C vs 88°C

Compare benchmarks

CPU 1: Intel Core i9-9940X
CPU 2: Intel Core i9-7940X

PassMark - Single thread mark
CPU 1
CPU 2
2477
2398
PassMark - CPU mark
CPU 1
CPU 2
27350
25376
Geekbench 4 - Single Core
CPU 1
CPU 2
5283
5211
Geekbench 4 - Multi-Core
CPU 1
CPU 2
42106
40211
Name Intel Core i9-9940X Intel Core i9-7940X
PassMark - Single thread mark 2477 2398
PassMark - CPU mark 27350 25376
Geekbench 4 - Single Core 5283 5211
Geekbench 4 - Multi-Core 42106 40211
3DMark Fire Strike - Physics Score 0

Compare specifications (specs)

Intel Core i9-9940X Intel Core i9-7940X

Essentials

Architecture codename Skylake Skylake
Launch date October 2018 September 2017
Place in performance rating 2 55
Processor Number i9-9940X i9-7940X
Series Intel® Core™ X-series Processors Intel® Core™ X-series Processors
Status Launched Launched
Vertical segment Desktop Desktop
Launch price (MSRP) $1,399
Price now $1,129.99
Value for money (0-100) 6.63

Performance

64 bit support
Base frequency 3.30 GHz 3.10 GHz
Bus Speed 8 GT/s DMI3 8 GT/s DMI3
L1 cache 64K (per core) 64 KB (per core)
L2 cache 1 MB (per core) 1024 KB (per core)
L3 cache 19.25 MB (shared) 19712 KB (shared)
Manufacturing process technology 14 nm 14 nm
Maximum core temperature 88°C 102°C
Maximum frequency 4.40 GHz 4.30 GHz
Number of cores 14 14
Number of QPI Links 0 0
Number of threads 28 28
Unlocked

Memory

Max memory channels 4 4
Maximum memory size 128 GB 128 GB
Supported memory types DDR4-2666 DDR4-2666

Compatibility

Max number of CPUs in a configuration 1 1
Sockets supported FCLGA2066 FCLGA2066
Thermal Design Power (TDP) 165 Watt 165 Watt
Thermal Solution PCG 2017X PCG 2017X
Low Halogen Options Available

Peripherals

Max number of PCIe lanes 44 44
PCI Express revision 3.0 3.0
Scalability 1S Only 1S Only

Security & Reliability

Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)

Advanced Technologies

Enhanced Intel SpeedStep® technology
Instruction set extensions Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512 Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
Intel 64
Intel® Advanced Vector Extensions (AVX)
Intel® AES New Instructions
Intel® Hyper-Threading technology
Intel® Optane™ Memory Supported
Intel® Turbo Boost technology
Number of AVX-512 FMA Units 2 2

Virtualization

Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)