Intel Core i3-7120 vs Intel Core i5-6400

Intel Core i3-7120
Intel Socket 1151DESKTOP
4000 MHz / Cores: 2 / Jul 2017
Intel Core i3-7120
Intel Core i5-6400
Intel Socket 1151DESKTOP
2700 MHz / Cores: 4 / Jul 2015
Intel Core i5-6400

Summary

Synthetic performance index

  • Intel Core i3-7120
    100%
  • Intel Core i5-6400
    114%

Relative performance

Single thread performance index

  • Intel Core i3-7120
    121%
  • Intel Core i5-6400
    100%

Relative performance

Multi thread performance index

  • Intel Core i3-7120
    100%
  • Intel Core i5-6400
    147%

Relative performance

Reasons to consider Intel Core i3-7120

Much higher single threaded performance (around 21% 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 Intel Core i5-6400.

Reasons to consider Intel Core i5-6400

Much higher multi threaded performance (around 47% higher). This allows for higher performance in professional applications like encoding or heavy multitasking.

No winner

Gaming

No clear winner declared


Intel Core i5-6400

Productivity

HWBench recommends Intel Core i5-6400

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


Specifications

Features

Intel Core i3-7120Intel Core i5-6400
MMX
SSE
SSE2
SSE3
SSSE3
SSE4.1
SSE4.2
AVX
AVX2
EIST
Intel 64
XD bit
VT-x
HTT
AES-NI
TSX
CLMUL
FMA3
VT-d
TXT
F16C
BMI1
BMI2
vPro
Boost 2.0

Architecture

Intel Core i3-7120Intel Core i5-6400
ArchitectureIntel_KabylakevsIntel_Skylake
MarketDesktopvsDesktop
Memory SupportDDR4vsDDR4
CodenameKaby LakevsSkylake
Release DateJul 2017vsJul 2015

Cores

Intel Core i3-7120Intel Core i5-6400
Cores2vs4
Threads4vs4
SMPs1vs1
Integrated GraphicsIntel HD 630vsNo

Cache

Intel Core i3-7120Intel Core i5-6400
L1 Cache64 KB (per core)vs64 KB (per core)
L2 Cache256 KB (per core)vs256 KB (per core)
L3 Cache3072 KB (shared)vs6144 KB (shared)

Physical

Intel Core i3-7120Intel Core i5-6400
SocketIntel Socket 1151vsIntel Socket 1151
Max Case Temp65°Cvs72°C
PackageFC-LGA1151vsFC-LGA12C
Die Sizeunknownvs177mm²
Process14 nmvs14 nm

Performance

Intel Core i3-7120Intel Core i5-6400
Cpu Frequency4000 MHzvs2700 MHz
Turbo Clocknonevs3300 MHz
Base Clock100 MHzvs100 MHz
Voltageunknownvsunknown
TDP51 Wvs65 W

Raw performance index

Raw single-thread performance estimation

  • Intel Core i3-7120
    4800 points
  • Intel Core i5-6400
    3795 points

Points - higher is better

Raw multi-thread performance estimation

  • Intel Core i3-7120
    11520 points
  • Intel Core i5-6400
    12420 points

Points - higher is better

Synthetic benchmarks

Cinebench R15 CPU Single 64Bit

  • Intel Core i3-7120 (simulated)
    170.48
  • Intel Core i5-6400 (simulated)
    140.25

points - higher is better

Cinebench R15 CPU Multi 64Bit

  • Intel Core i3-7120 (simulated)
    436.92
  • Intel Core i5-6400 (simulated)
    644.14

points - higher is better