Core i5-6400

Details and Benchmarks for Intel Core i5-6400

Sysbuilds Alpha Stage!

Please take all results with a big grain of salt. Sysbuilds is in alpha stage at the moment which can lead to wrong data, strange counting errors, silly results and more. This site is under active development.

Benchmark Results

Combined benchmark scores based on multiple data points, giving a quick overview of this processor's performance.

Overall Score

Overall score for Core i5-6400 based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

4,988 Rank: 881
Rank Name Score Visual
877 Ryzen Embedded V1605B 4,993
+0.1%
878 Core i5-4570S 4,992
+0.1%
879 Xeon D-1528 4,990
+0%
880 Pentium Gold G5420 4,990
+0%
881 Core i5-6400 4,988
882 Core i7-6700T 4,987
+-0%
883 Core i5-1030NG7 4,987
+-0%
884 Core i5-4460 4,986
+-0%
885 Core i7-4710MQ 4,986
+-0%
886 FX-8320E 4,986
+-0%

View full ranking →

Multicore Score

Multicore performance score for Core i5-6400 based on multi-threaded benchmark results.

4,573 Rank: 1130
Rank Name Score Visual
1126 Ryzen 3 2200GE 4,576
+0.1%
1127 Athlon 240GE 4,576
+0.1%
1128 A10-7890K 4,576
+0.1%
1129 Core i7-7560U 4,573
+0%
1130 Core i5-6400 4,573
1131 Core i3-2348M 4,572
+-0%
1132 Core i5-6400T 4,571
+-0%
1133 Atom x5-Z8300 4,570
-0.1%
1134 Pentium G4500T 4,569
-0.1%
1135 Xeon E5530 4,569
-0.1%

View full ranking →

Singlecore Score

Single-core performance score for Core i5-6400 based on single-threaded benchmark results.

5,264 Rank: 759
Rank Name Score Visual
755 Xeon E3-1280 v3 5,267
+0.1%
756 Xeon E5-2699A v4 5,266
+0%
757 Core i7-4810MQ 5,265
+0%
758 Core i7-4980HQ 5,265
+0%
759 Core i5-6400 5,264
760 Ryzen 5 4600H 5,263
+-0%
761 Xeon D-2183IT 5,261
-0.1%
762 EPYC 7232P 5,260
-0.1%
763 Pentium G4400 5,258
-0.1%
764 Core i7-5700HQ 5,258
-0.1%

View full ranking →

Workload Scores

Performance scores grouped by workload type, normalized and aggregated from multiple raw benchmark results.

Number Crunching

Aggregated score for Core i5-6400 based on integer math, floating point math, and prime number computation benchmarks.

4,626 Rank: 901
Rank Name Score Visual
897 Ryzen 3 PRO 2200GE 4,627
+0%
898 Core i3-8100T 4,627
+0%
899 Core i7-4702MQ 4,627
+0%
900 Core i5-7500T 4,626
+0%
901 Core i5-6400 4,626
902 Core i5-4460S 4,626
+0%
903 Core i7-3615QM 4,626
+0%
904 Xeon L5640 4,626
+0%
905 Core i7-6822EQ 4,625
+-0%
906 Atom C3758 4,625
+-0%

View full ranking →

Data Processing

Aggregated score for Core i5-6400 based on data encryption, data compression, and string sorting benchmarks.

4,594 Rank: 914
Rank Name Score Visual
910 Core i5-3550 4,596
+0%
911 Core i5-4570S 4,596
+0%
912 Xeon D-1527 4,595
+0%
913 Core i5-6440EQ 4,594
+0%
914 Core i5-6400 4,594
915 Core i3-8300T 4,594
+0%
916 Core i5-1030NG7 4,594
+0%
917 Xeon E5-1607 v4 4,593
+-0%
918 Core i5-7500T 4,593
+-0%
919 Core i3-8100T 4,593
+-0%

View full ranking →

Physics & Compute

Aggregated score for Core i5-6400 based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

4,686 Rank: 764
Rank Name Score Visual
760 Core i5-6600T 4,687
+0%
761 Core i7-4820K 4,687
+0%
762 Xeon E5-2430 v2 4,687
+0%
763 Core i5-7500T 4,686
+0%
764 Core i5-6400 4,686
765 Core i5-4670 4,686
+0%
766 Ryzen 5 PRO 1500 4,685
+-0%
767 Xeon E5-2637 v2 4,685
+-0%
768 Ryzen 5 2500X 4,684
+-0%
769 Core i7-4900MQ 4,684
+-0%

View full ranking →

Core i5-6400 Details

Built on Intel's Skylake microarchitecture and fabricated on a 14 nm process, the Core i5-6400 represents a solid mid-range desktop CPU from 2015. As of early 2026, this processor is now over a decade old, placing it firmly in the legacy category. Despite its age, it remains a capable performer for basic productivity and light multimedia tasks, thanks to its efficient design and balanced feature set. With a base clock of 2.7 GHz and a maximum turbo frequency of 3.3 GHz, the i5-6400 delivers consistent performance across single-threaded and lightly threaded workloads.

The processor features four cores and four threads, with no support for simultaneous multithreading. It includes 6 MB of L3 cache and 1 MB of L2 cache, ensuring fast access to frequently used data. The integrated HD Graphics 530 GPU provides basic display output, capable of driving up to three monitors and operating at a base frequency of 350 MHz, with a maximum dynamic frequency of 950 MHz. This makes it suitable for office applications and light gaming, though it falls short of modern integrated graphics solutions.

The Core i5-6400 operates within a 65 W TDP and uses the LGA-1151 socket, requiring a compatible Intel 100 or 200 Series chipset. It supports dual-channel DDR4-2133 and DDR3L-1600 memory, with a maximum memory capacity of 64 GB and a memory bandwidth of 34.1 GB/s. The processor supports a range of Intel technologies, including AVX, AVX2, AES-NI, and Intel VT-x, enhancing performance in encryption, virtualization, and multimedia applications.

In benchmark testing, the Core i5-6400 achieves a single-core score of 5264, ranking #759 of 2060, and a multicore score of 4573, placing it at #1129 of 2060. Its overall score of 4988 ranks it #881 of 2060, indicating that while it holds its own against older processors, it lags significantly behind modern CPUs. The single-core performance is particularly strong, outperforming several recent Intel and AMD models in the same category.

Given its age and performance level, the Core i5-6400 is best suited for budget systems, office environments, or as a replacement in older builds. While it no longer competes with today’s high-end processors, it remains a reliable option for users who prioritize cost-effectiveness and energy efficiency over cutting-edge performance.
Frequently Compared

Intel Xeon Silver 4114 21 views

Intel Xeon Platinum 8270 20 views

Intel Xeon Silver 4116T 20 views

AMD Ryzen 5 PRO 3500U 19 views

Intel Core i7-7600U 19 views

Intel Xeon Silver 4210 19 views

Intel Xeon Silver 4112 18 views

Intel Xeon Silver 4110 18 views

AMD Ryzen 3 PRO 2200GE 17 views

AMD Ryzen 9 PRO 3900 16 views

Intel Core i5-6400

Main Specifications

Designer: Intel
Name: Core i5-6400
Family: Core
Series: i5-6000
Model Number: i5-6400
Cores: 4
Threads: 4
Base Frequency: 2700 MHz
Turbo Frequency (1 core): 3300 MHz
Turbo Frequency (2 cores): 3300 MHz
Turbo Frequency (3 cores): 3200 MHz
Turbo Frequency (4 cores): 3100 MHz
Clock Multiplier: 27x (locked)
Microarchitecture: Skylake
Core Name: Skylake
Core Family: 6
Core Model: 94
Socket: LGA-1151
Package: FCLGA-1151
Chipset: Sunrise
Target Segment: Desktop
Max CPUs: 1
TDP: 65 W
Release Price: $187.00

Cache Specifications

L1 Cache: 256 KiB
L1 Instruction Cache: 128 KiB (8-way set associative)
L1 Data Cache: 128 KiB (8-way set associative)
L2 Cache: 1 MiB (4-way set associative)
L3 Cache: 6 MiB

Memory Specifications

Supported Memory Type: DDR3L-1600 and DDR4-2133
Memory Channels: 2
Maximum Memory: 64 GB
Maximum Bandwidth: 31.79 GB/s
ECC Support: No

Integrated Graphics

GPU: HD Graphics 530
GPU Designer: Intel
GPU Max Frequency: 950 MHz
Execution Units: 24

Physical Specifications

Process: 14 nm
Die Area: 122 mm²
Manufacturer: Intel
Technology: CMOS
Word Size: 64-bit
ISA: x86-64 (x86)

CPU Features

MMX EMMX SSE SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 AVX AVX2 ABM BMI1 BMI2 FMA3 AES RdRand ADX CLMUL F16C x86-16 x86-32 x86-64 Real Protected SMM FPU NX TBT 2.0 EIST TXT vPro VT-x VT-d EPT MPX SGX Secure Key SMEP IPT TSX BPT
Related News

3 sources · 1 week ago

Linux Kernel 7.1-rc6 Released: AMD Zen 6 Support Added as clearcpuid Docs Removed Amid Heavy Code Churn

With the release of Linux Kernel 7.1-rc6, AMD has expanded the range of recognized Zen 6 CPU model numbers up to 239, re...

3 sources · 5 days ago

7 sources · 4 days ago

Intel Unveils Arc G-Series: Panther Lake Chips with XeSS 3 Aim to Challenge AMD in Handheld Gaming Market

At Computex 2026, Intel introduced the new Arc G-Series, a processor family based on the Panther Lake architecture speci...

3 sources · 1 week ago

3 sources · 1 week ago

Login

Forgot your password?

Your experience on this site will be improved by allowing cookies.