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Intel BX80662I56400

Core i5-6400

▲ 5513,025 ▼

4 Cores, 4 Threads @2.7GHz, Skylake.
Release date: Q3 2015.

Average Bench: 60.8% (581st of 1459)

more Based on 171,457 user benchmarks.  Devices: BFEBFBFF000506E3, , BFEBFBFF000906E9, 0F8BFBFF000506E3, 0000000000000000, 1F8BFBFF000506E3, 0FABFBFF000506E3, 1FABFBFF000506E3 Models: Intel(R) Core(TM) i5-6400 CPU @ 2.70GHz, Intel(R) Core(TM) i5-6400 CPU
Poor: 39%Average: 60.8% Great: 71%
Gaming
Gaming 61%
Destroyer
Desktop
Desktop 66%
Battle cruiser
Workstation
Workstation 45%
Yacht

Popular builds with this CPU

Above average average bench

The Intel Core i5-6400 averaged 39.1% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.

Strengths

Avg. Memory Latency 75.2Pts
Avg. Single Core Speed 84.6Pts

Above average consistency

The range of scores (95th - 5th percentile) for the Intel Core i5-6400 is 31.4%. This is a relatively narrow range which indicates that the Intel Core i5-6400 performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. Multi Core Speed 288Pts
Avg. Octa Core Speed 286Pts
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Average Bench

(Based on 171,457 samples)
Rank 58160.8%
Min Avg Max
44.5 Memory 75.2 86.8
61.8 1-Core 84.6 96.1
107 2-Core 166 189
63.1% 109 Pts
Min Avg Max
165 4-Core 267 335
193 8-Core 286 344
36.5% 276 Pts
Min Avg Max
203 64-Core 288 346
17.8% 288 Pts
User Benchmarks BenchNormalHeavyServer
The fastest CPU (mainstream) averages a speed of 100%
LGA1151, 1 CPU, 4 cores, 4 threads
Base clock 2.7 GHz, turbo 3.1 GHz (avg)
74.7% Very good
Memory 84.8
1-Core 98.4
2-Core 189
72% 124 Pts
4-Core 374
8-Core 374
50% 374 Pts
64-Core 374
23% 374 Pts
LGA1151, 1 CPU, 4 cores, 4 threads
Base clock 2.7 GHz, turbo 3.1 GHz (avg)
72.2% Very good
Memory 83.2
1-Core 93.8
2-Core 178
69% 119 Pts
4-Core 354
8-Core 356
47% 355 Pts
64-Core 354
22% 354 Pts
U3E1, 1 CPU, 4 cores, 4 threads
Base clock 2.7 GHz, turbo 3.1 GHz (avg)
66.1% Good
Memory 77.8
1-Core 86.9
2-Core 170
65% 112 Pts
4-Core 311
8-Core 336
43% 324 Pts
64-Core 329
20% 329 Pts
U3E1, 1 CPU, 4 cores, 4 threads
Base clock 2.7 GHz, turbo 3.1 GHz (avg)
63.8% Good
Memory 73.5
1-Core 90.7
2-Core 180
65% 115 Pts
4-Core 310
8-Core 336
42% 323 Pts
64-Core 332
21% 332 Pts
LGA1151, 1 CPU, 4 cores, 4 threads
Base clock 2.7 GHz, turbo 3.1 GHz (avg)
62.3% Good
Memory 70.3
1-Core 88.9
2-Core 161
62% 107 Pts
4-Core 309
8-Core 343
43% 326 Pts
64-Core 336
21% 336 Pts
171,457 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 68,303,482 CPUs tested

 Prices

If you buy via one of these links, our site may earn a commission

MSRP ≈ $187 @ launch in Sep '15
AmazonUS $7916 mins
EbayUS $1708 months
BHPhotoUS $1826 years
Send price feedback
Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money

CHOOSE A COMPONENT:

CPU GPU SSD HDD RAM MBD
Typical Core i5-6400 Builds (Compare 2,224 builds) See popular component choices, score breakdowns and rankings
Gaming
Gaming 39%
Jet ski
Desktop
Desktop 72%
Battleship
Workstation
Workstation 31%
Sail boat

System: Asus G11CD

CPU
Core i5-6400Intel  $79Bench 61%, 171,457 samples1,297x
GPU
GTX 1060-6GBNvidia  $117Bench 56%, 1,368,019 samples479x
GTX 970Nvidia  $200Bench 49%, 834,238 samples384x
GTX 950Nvidia  $100Bench 26%, 111,509 samples195x
SSD
SD8SB8U512G1002 512GBSandiskBench 81%, 2,367 samples180x
HFS256G32MND-2200A 256GBBench 70%, 3,087 samples80x
SD8SBAT128G1002 128GBSandiskBench 58%, 3,654 samples73x
RAM
HMA41GU6AFR8N-TF 2x8GBHynixBench 73%, 22,760 samples360x
HMA41GU6AFR8N-TF 1x8GBHynixBench 39%, 16,202 samples336x
ASU21D4U5S8MB-8 2x8GBKingstonBench 67%, 1,185 samples147x
EDIT WITH CUSTOM PC BUILDER Value: 103% - Outstanding Total price: $196

Popular Core i5-6400 systems:

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Processor Rankings (Price vs Performance) July 2024 CPU Rankings

We calculate effective speed which measures real world performance for typical users. Effective speed is adjusted by current prices to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top CPUs. [CPUPro]

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Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.

 Specifications

Essentials

DescriptionIntel® Core™ i5-6400 Processor (6M Cache, up to 3.30 GHz)
Code NameSkylake
Launch DateQ3'15
Processor Numberi5-6400
# of Cores4
# of Threads4
Cache6 MB SmartCache
Instruction Set64-bit
Instruction Set ExtensionsSSE4.1/4.2, AVX 2.0
Embedded Options AvailableNo
Lithography14 nm
Recommended Price$182.00 - $187.00
Clock Speed2.7 GHz
Max Turbo Frequency3.3 GHz
Bus Speed8 GT/s DMI3
Scalability1S Only
Max TDP65 W
Thermal Solution SpecificationPCG 2015C (65W)

Graphics

Processor GraphicsIntel® HD Graphics 530
Graphics Base Frequency350 MHz
Graphics OutputeDP/DP/HDMI/DVI
Wireless DisplayYes
# of Displays Supported3
Graphics Max Dynamic Frequency950 MHz
Quick Sync VideoYes
InTru 3D TechYes
Clear Video HD TechYes
Intel InsiderYes
Clear Video Tech for MIDYes
Graphics Video Max Memory64 GB

Memory

Max Memory Size64 GB
Memory TypesDDR4-1866/2133, DDR3L-1333/1600 @ 1.35V
Memory Channels2
Memory Bandwidth34.1 GB/s
ECC Memory SupportedNo

Expansion Options

PCI Express Revision3.0
PCI Express ConfigurationsUp to 1x16, 2x8, 1x8+2x4
Max # of PCI Express Lanes16

Data Protection

AES New InstructionsYes
Secure KeyYes

Advanced Technologies

Virtualization Tech (VT-x)Yes
Intel 64Yes
Idle StatesYes
Enhanced Intel SpeedStep® TechYes
Thermal Monitoring TechnologiesYes
Turbo Boost Tech2.0
Hyper-Threading TechNo
Virtualization for Directed I/O (VT-d)Yes
VT-x with Extended Page Tables (EPT)Yes
TSX-NINo
vPro TechNo
Identity Protection TechYes
Stable Image Platform Program (SIPP)No
Small Business AdvantageYes

Package

Package Size37.5mm x 37.5mm
Graphics and IMC Lithography14 nm
Max CPU Configuration1
Sockets SupportedFCLGA1151

Platform Protection

Execute Disable BitYes
OS GuardYes
Trusted Execution TechNo

 Comments

CPUPro
Avatar level
2,080

Official site ark.intel.com/...

Skylake 6th generation Core i5 processor...

Added 8 years ago.
USA-User
Avatar level
9,918

Liked (edit your comment) Add link

4 months ago.

GBR-User
Avatar level
5,828

Liked

6 months ago.

Comment 

Decent performing CPU considering it's age, general computing tasks tend to run smoothly. CPU intensive games tend to suffer slightly, but overall a great foundation for a budget system. Would not recommend for newer builds however unless found at a low price as there are many more cost effective choices available.—Dec '20

NLD-User
Avatar level
3,548

Poor

12 months ago.

Have used for years and runs really stable

TWN-User
Avatar level
2,904

Poor

11 months ago.

Despite its age, still a cost effective processor when coupled with a right GPU

FIN-User
Avatar level
2,562

Excellent

5 months ago.

Runs games just fine to this day and doesn't really bottleneck my GTX 1070, wouldn't get it now since better alternatives exist

NZL-User
Avatar level
2,152

Excellent

6 months ago.

its amazing for my first desktop

EthanOZT
Avatar level
26

Good

9 months ago.

good cpu, 2.7 ghz is fast enough. if only it used a uhd graphics chip but that's fine, going from a 4200u 1.6ghz. so this is good

serebit
Avatar level
18

Average

5 years ago.

For a relatively cheap, outdated CPU, it performs just fine.

collinator24
Avatar level
6

Terrible

5 years ago.

Slow oem cpu, avoid.

patonoventa
Avatar level
2

Excellent

5 years ago.

Amazing Cost/Benefit CPU

badmaster12
Avatar level
2

Terrible

4 years ago.

if youre gaming, please dont buy, very slow even in games like Minecraft

Lisio
Avatar level
2

Excellent

3 years ago.

It is still a very good gaming processor, of course, faster than games in ryzów, I have a score of 98.6 and RAM 112-115 on it

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Speed Comparisons

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See how consistently different CPUs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

 Frequently Asked Questions

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The Best
CPUGPUSSD
Intel Core i5-12600K $175Nvidia RTX 4060 $293WD Black SN850X M.2 2TB $145
Intel Core i5-12400F $110Nvidia RTX 4060-Ti $389WD Black SN850X M.2 1TB $80
Intel Core i5-13600K $235Nvidia RTX 4070 $499Crucial T700 M.2 4TB $342
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