Intel Core i9-12900K vs AMD Ryzen 9 3900X

Intel Core i9-12900K
Intel Socket 1700DESKTOP
3200 MHz / Cores: 16 / Nov 2021
Intel Core i9-12900K
AMD Ryzen 9 3900X
AMD Socket AM4DESKTOP
3800 MHz / Cores: 12 / Dec 2019
AMD Ryzen 9 3900X

Summary

Synthetic performance index

  • Intel Core i9-12900K
    137%
  • AMD Ryzen 9 3900X
    100%

Relative performance

Single thread performance index

  • Intel Core i9-12900K
    137%
  • AMD Ryzen 9 3900X
    100%

Relative performance

Reasons to consider Intel Core i9-12900K

Much higher single threaded performance (around 37% higher), makes a noticeable performance difference in gaming and the majority of applications.
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 AMD Ryzen 9 3900X.
Around 37% higher average synthetic performance.

Reasons to consider AMD Ryzen 9 3900X

None

Intel Core i9-12900K

Gaming

HWBench recommends Intel Core i9-12900K

Based on game and synthetic benchmarks, and theoretical specifications.

No winner

Productivity

No clear winner declared



Specifications

Features

Intel Core i9-12900KAMD Ryzen 9 3900X
MMX
SSE
SSE2
SSE3
SSSE3
SSE4.2
AVX
AVX2
AVX-512
FMA3
SHA
EIST
Intel 64
XD bit
VT-x
VT-d
AES-NI
TSX
TXT
CLMUL
F16C
BMI1
BMI2
ABM
ADX
RdRand
TBT 2.0
TBT 3.0
SSE4A
SSE4.1
AES
AMD64
EVP
AMD-V
SMAP
SMEP
SMT
Precision Boost 2
XFR 2

Architecture

Intel Core i9-12900KAMD Ryzen 9 3900X
ArchitectureIntel Adler LakevsAMD Zen 2
MarketDesktopvsDesktop
Memory SupportDDR4-3200 MHz Dual-channelvsDDR4
CodenameAlder LakevsZen 2
Release DateNov 2021vsDec 2019

Cores

Intel Core i9-12900KAMD Ryzen 9 3900X
Cores16vs12
Threads24vs24
E-Cores8vsnone
SMPs1vs1
Integrated GraphicsUHD Graphics 770vsNo

Cache

Intel Core i9-12900KAMD Ryzen 9 3900X
L1 Cache64K (per core)vs96K (per core)
L2 Cache14MB (shared)vs512K (per core)
L3 Cache30MB (shared)vs64MB

Physical

Intel Core i9-12900KAMD Ryzen 9 3900X
SocketIntel Socket 1700vsAMD Socket AM4
Max Case Temp72°Cvsunknown
PackageFC-LGA1700vs
Die Sizeunknownvsunknown
Process10 nmvs7 nm

Performance

Intel Core i9-12900KAMD Ryzen 9 3900X
Cpu Frequency3200 MHzvs3800 MHz
Turbo Clock5200 MHzvs4600 MHz
Base Clock100 MHzvs100 MHz
E-Core Frequency2400 MHzvs-
E-Core Turbo Clock3900 MHzvs-
VoltageN/Avsvariable
TDP125 Wvs125 W

Raw performance index

Raw single-thread performance estimation

  • Intel Core i9-12900K
    6240 points
  • AMD Ryzen 9 3900X
    5152 points

Points - higher is better

Raw multi-thread performance estimation

  • Intel Core i9-12900K
    67584 points
  • AMD Ryzen 9 3900X
    62307 points

Points - higher is better

Synthetic benchmarks

Cinebench R15 CPU Single 64Bit

  • Intel Core i9-12900K
    284
  • AMD Ryzen 9 3900X
    206

points - higher is better