AMD Ryzen 9 3900X vs Intel Core i7-8700K

AMD Ryzen 9 3900X
AMD Socket AM4DESKTOP
3800 MHz / Cores: 12 / Dec 2019
AMD Ryzen 9 3900X

Intel Core i7-8700K
Intel Socket 1151DESKTOP
3700 MHz / Cores: 6 / Oct 2017
Intel Core i7-8700K

Summary

Synthetic performance index

  • AMD Ryzen 9 3900X
    162%
  • Intel Core i7-8700K
    100%

Relative performance

Single thread performance index

  • AMD Ryzen 9 3900X
    101%
  • Intel Core i7-8700K
    100%

Relative performance

Multi thread performance index

  • AMD Ryzen 9 3900X
    223%
  • Intel Core i7-8700K
    100%

Relative performance

Reasons to consider AMD Ryzen 9 3900X

Much higher multi threaded performance (around 123% higher). This allows for higher performance in professional applications like encoding or heavy multitasking.
This is a newer product, it might have better application compatibility/performance (check features chart below).
Around 62% higher average synthetic performance.

Reasons to consider Intel Core i7-8700K

Has an integrated GPU, which allows to run the system without a dedicated graphics card, unlike the AMD Ryzen 9 3900X.

AMD Ryzen 9 3900X

Gaming

HWBench recommends AMD Ryzen 9 3900X

Based on game and synthetic benchmarks, and theoretical specifications.

AMD Ryzen 9 3900X

Productivity

HWBench recommends AMD Ryzen 9 3900X

Based on productivity benchmarks, overall multithreaded performance and theoretical specifications.


Specifications

Features

AMD Ryzen 9 3900XIntel Core i7-8700K
MMX
SSE
SSE2
SSE3
SSSE3
SSE4A
SSE4.1
SSE4.2
AES
AVX
AVX2
BMI1
BMI2
SHA
F16C
FMA3
AMD64
EVP
AMD-V
SMAP
SMEP
SMT
Precision Boost 2
XFR 2
EIST
Intel 64
XD bit
VT-x
VT-d
HTT
AES-NI
TSX
TXT
CLMUL
Boost 2.0

Architecture

AMD Ryzen 9 3900XIntel Core i7-8700K
ArchitectureAMD_Zen_2vsIntel_Coffelake
MarketDesktopvsDesktop
Memory SupportDDR4vsDDR4
CodenameZen 2vsCoffee Lake
Release DateDec 2019vsOct 2017

Cores

AMD Ryzen 9 3900XIntel Core i7-8700K
Cores12vs6
Threads24vs12
SMPs1vs1
Integrated GraphicsNovsIntel UHD 630

Cache

AMD Ryzen 9 3900XIntel Core i7-8700K
L1 Cache96K (per core)vs64 KB (per core)
L2 Cache512K (per core)vs256 KB (per core)
L3 Cache64MBvs12288 KB (shared)

Physical

AMD Ryzen 9 3900XIntel Core i7-8700K
SocketAMD Socket AM4vsIntel Socket 1151
Max Case Tempunknownvs72°C
PackagevsFC-LGA1151
Die Sizeunknownvs151mm²
Process7 nmvs14 nm

Performance

AMD Ryzen 9 3900XIntel Core i7-8700K
Cpu Frequency3800 MHzvs3700 MHz
Turbo Clock Speed4600 MHzvs4700 MHz
Base Clock100 MHzvs100 MHz
Voltagevariablevsunknown
TDP125 Wvs95 W

Raw performance index

Raw single-thread performance estimation

  • AMD Ryzen 9 3900X
    5060 points
  • Intel Core i7-8700K
    5640 points

Points - higher is better

Raw multi-thread performance estimation

  • AMD Ryzen 9 3900X
    61195 points
  • Intel Core i7-8700K
    31968 points

Points - higher is better

Synthetic benchmarks

Cinebench R15 CPU Multi 64Bit

  • AMD Ryzen 9 3900X
    3159
  • Intel Core i7-8700K
    1412

points - higher is better

Cinebench R15 CPU Single 64Bit

  • AMD Ryzen 9 3900X
    206
  • Intel Core i7-8700K
    202

points - higher is better