Intel Core i9-9900K vs Intel Core i7-7820X

Intel Core i9-9900K
Intel Socket 1151DESKTOP
3600 MHz / Cores: 8 / Sep 2018
Intel Core i9-9900K

Intel Core i7-7820X
Intel Socket 2066DESKTOP
3600 MHz / Cores: 8 / Jun 2017
Intel Core i7-7820X

Summary

Synthetic performance index

  • Intel Core i9-9900K
    116%
  • Intel Core i7-7820X
    100%

Relative performance

Single thread performance index

  • Intel Core i9-9900K
    112%
  • Intel Core i7-7820X
    100%

Relative performance

Multi thread performance index

  • Intel Core i9-9900K
    119%
  • Intel Core i7-7820X
    100%

Relative performance

Reasons to consider Intel Core i9-9900K

12% higher single threaded performance.
19% higher multi threaded performance.
45 watts lower power draw.
This is a newer product, it might have better application compatibility/performance (check features chart below).
Has an integrated GPU, which allows to run the system without a dedicated graphics card, unlike the Intel Core i7-7820X.
Around 16% higher average synthetic performance.

Reasons to consider Intel Core i7-7820X

None

Intel Core i9-9900K

Gaming

HWBench recommends Intel Core i9-9900K

Based on game and synthetic benchmarks, and theoretical specifications.

No winner

Productivity

No clear winner declared



Specifications

Features

Intel Core i9-9900KIntel Core i7-7820X
MMX
SSE
SSE2
SSE3
SSSE3
SSE4.2
AVX
AVX2
EIST
Intel 64
XD bit
VT-x
VT-d
HTT
AES-NI
TSX
TXT
CLMUL
FMA3
F16C
BMI1
BMI2
Boost 2.0
Boost 3.0

Architecture

Intel Core i9-9900KIntel Core i7-7820X
ArchitectureIntel_CoffelakevsIntel_Kabylake
MarketDesktopvsDesktop
Memory SupportDDR4vsDDR4
CodenameCoffee LakevsSkylake-X
Release DateSep 2018vsJun 2017

Cores

Intel Core i9-9900KIntel Core i7-7820X
Cores8vs8
Threads16vs16
SMPs1vs1
Integrated GraphicsUHD Graphics 630vsNo

Cache

Intel Core i9-9900KIntel Core i7-7820X
L1 Cache64 KB (per core)vs64 KB (per core)
L2 Cache256 KB (per core)vs256 KB (per core)
L3 Cache16896 KB (shared)vs11264 KB (shared)

Physical

Intel Core i9-9900KIntel Core i7-7820X
SocketIntel Socket 1151vsIntel Socket 2066
Max Case Temp72°Cvs72°C
PackageFC-LGA14CvsFC-LGA2066
Die Sizeunknownvs308mm²
Process14 nmvs14 nm

Performance

Intel Core i9-9900KIntel Core i7-7820X
Cpu Frequency3600 MHzvs3600 MHz
Turbo Clock Speed5000 MHzvs4500 MHz
Base Clock100 MHzvs100 MHz
Voltageunknownvsunknown
TDP95 Wvs140 W

Raw performance index

Raw single-thread performance estimation

  • Intel Core i9-9900K
    6000 points
  • Intel Core i7-7820X
    5400 points

Points - higher is better

Raw multi-thread performance estimation

  • Intel Core i9-9900K
    41472 points
  • Intel Core i7-7820X
    41472 points

Points - higher is better

Synthetic benchmarks

Cinebench R15 CPU Multi 64Bit

  • Intel Core i9-9900K
    2077
  • Intel Core i7-7820X
    1734

points - higher is better

Cinebench R15 CPU Single 64Bit

  • Intel Core i9-9900K
    218
  • Intel Core i7-7820X
    193

points - higher is better