Intel Core i3-8120 vs Intel Core i5-8400

Intel Core i3-8120
Intel Socket 1151DESKTOP
3700 MHz / Cores: 4 / Sep 2018
Intel Core i3-8120

Intel Core i5-8400
Intel Socket 1151DESKTOP
2800 MHz / Cores: 6 / Jan 2018
Intel Core i5-8400

Summary

Synthetic performance index

  • Intel Core i3-8120
    100%
  • Intel Core i5-8400
    112%

Relative performance

Single thread performance index

  • Intel Core i3-8120
    100%
  • Intel Core i5-8400
    106%

Relative performance

Multi thread performance index

  • Intel Core i3-8120
    100%
  • Intel Core i5-8400
    118%

Relative performance

Reasons to consider Intel Core i3-8120

None

Reasons to consider Intel Core i5-8400

6% higher single threaded performance.
18% higher multi threaded performance.
Around 12% higher average synthetic performance.

Intel Core i5-8400

Gaming

HWBench recommends Intel Core i5-8400

Based on game and synthetic benchmarks, and theoretical specifications.

No winner

Productivity

No clear winner declared




Specifications

Features

Intel Core i3-8120Intel Core i5-8400
MMX
SSE
SSE2
SSE3
SSSE3
SSE4.2
AVX
AVX2
EIST
Intel 64
XD bit
VT-x
VT-d
AES-NI
TSX
TXT
CLMUL
FMA3
F16C
BMI1
BMI2
Boost 2.0

Architecture

Intel Core i3-8120Intel Core i5-8400
ArchitectureIntel_CoffelakevsIntel_Coffelake
MarketDesktopvsDesktop
Memory SupportDDR4vsDDR4
CodenameCoffee LakevsCoffee Lake
Release DateSep 2018vsJan 2018

Cores

Intel Core i3-8120Intel Core i5-8400
Cores4vs6
Threads4vs6
SMPs1vs1
Integrated GraphicsUHD Graphics 630vsIntel UHD 630

Cache

Intel Core i3-8120Intel Core i5-8400
L1 Cache64 KB (per core)vs64 KB (per core)
L2 Cache256 KB (per core)vs256 KB (per core)
L3 Cache6144 KB (shared)vs9216 KB (shared)

Physical

Intel Core i3-8120Intel Core i5-8400
SocketIntel Socket 1151vsIntel Socket 1151
Max Case Temp72°Cvs72°C
PackageFC-LGA1151vsFC-LGA1151
Die Sizeunknownvs151mm²
Process14 nmvs14 nm

Performance

Intel Core i3-8120Intel Core i5-8400
Cpu Frequency3700 MHzvs2800 MHz
Turbo Clock Speednonevs4000 MHz
Base Clock100 MHzvs100 MHz
Voltagevariablevsunknown
TDP65 Wvs65 W

Raw performance index

Raw single-thread performance estimation

  • Intel Core i3-8120
    4440 points
  • Intel Core i5-8400
    4800 points

Points - higher is better

Raw multi-thread performance estimation

  • Intel Core i3-8120
    17760 points
  • Intel Core i5-8400
    20160 points

Points - higher is better


Synthetic benchmarks

Cinebench R15 CPU Single 64Bit

  • Intel Core i3-8120 (simulated)
    159.31
  • Intel Core i5-8400
    170

points - higher is better

Cinebench R15 CPU Multi 64Bit

  • Intel Core i3-8120 (simulated)
    790.21
  • Intel Core i5-8400
    939

points - higher is better