Core i5-6400

Description

The Core i5-6400 is a cpu manufactured by Intel that was released on September 2015. This model has 4 Skylake-S cores , runs at 2700 MHz as base frequency and has a a thermal design power of 65 W.

The i5-6400 has 4x32+4x32 kB of cache L1, 4x256 kB of cache L2 and 6144 kB of cache L3.

Sky Lake is also known as 6th generation Core. Include Thunderbolt 3.0, SATA Express and Iris Pro graphics with DirectX 12. It uses LGA 1151 socket for mainstream models and LGA 2066 for X-Series. Sky Lake comes with AVX2 support in all mainstreams CPUs and AVX-512 in some high end models.

Specs

Official name

Intel(R) Core(TM) i5-6400 CPU @ 2.70GHz

CPUID

506e3

Core

Skylake-S

Architecture

Skylake

Base frecuency

2.7 GHz

Boost frecuency

3.3 GHz

Socket

LGA 1151

Cores/Threads

4/4

TDP

65 W

Cache L1 (d+i)

4x32+4x32 kB

Cache L2

4x256 kB

Cache L3

6144 kB

Release date

September 2015

Non-optimized benchmark

The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs

Monothread

Multithread

Test#1 (Integers)

3185

10777 (x3.4)

Test#2 (FP)

12581

44113 (x3.5)

Test#3 (Generic, ZIP)

4105

13887 (x3.4)

Test#1 (Memory)

3934

7829 (x2.0)

TOTAL

23805

76606 (x3.2)

SSE3 optimized benchmark

The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.

Monothread

Multithread

Test#1 (Integers)

11411

41474 (x3.6)

Test#2 (FP)

16352

65462 (x4.0)

Test#3 (Generic, ZIP)

4146

16202 (x3.9)

Test#1 (Memory)

3277

7660 (x2.3)

TOTAL

35186

130798 (x3.7)

AVX optimized benchmark

The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.

Monothread

Multithread

Test#1 (Integers)

11824

46044 (x3.9)

Test#2 (FP)

18358

69468 (x3.8)

Test#3 (Generic, ZIP)

4426

16330 (x3.7)

Test#1 (Memory)

4950

7742 (x1.6)

TOTAL

39558

139584 (x3.5)

AVX2 optimized benchmark

The benchmark in mode III (AVX2), like AVX1, is optimized to used 256 bits registers beside the second version of the Advanced Vector Extensions (AVX). The first AVX2 compatible CPU was released in 2013.

Monothread

Multithread

Test#1 (Integers)

21213

80359 (x3.8)

Test#2 (FP)

18149

71943 (x4.0)

Test#3 (Generic, ZIP)

4213

16375 (x3.9)

Test#1 (Memory)

4304

8054 (x1.9)

TOTAL

47879

176731 (x3.7)

Monothread performance graph

Monothread performance graphics gives the performance vs time. They are useful to measure the time it takes to the CPU to reach the maximum performance.

Usually, CPU's performance will be steady during these tests but if it has a slow frequency strategy, the first samples will show a lower score.

Test#1 (Integers) [% vs time]

Test#2 (FP) [% vs time]

Test#3 (Generic, ZIP) [% vs time]

Test#1 (Memory) [% vs time]

Multithread performance graph

Multithread graphs measure the performance against a heavy load during certain time.

If CPU's TDP doesn't limit the frequency and the machine is properly cooled, performance should remain steady vs time. Otherwise, the performance score will oscillate or decrease over time.

Test#1 (Integers) [% vs time]

Test#2 (FP) [% vs time]

Test#3 (Generic, ZIP) [% vs time]

Test#1 (Memory) [% vs time]

Similar CPUs to Core i5-6400

Intel Core i5-6400 (This model)

Mode FPU monothread [23805 points]

Mode FPU multithread [76606 points]

Mode AVX2 monothread [47879 points]

Mode AVX2 multithread [176731 points]

Intel Core i5-7300HQ [Compare]

Mode FPU monothread [30829 points +29.51%]

Mode FPU multithread [90854 points +18.60%]

Mode AVX2 monothread [55591 points +16.11%]

Mode AVX2 multithread [177841 points +0.63%]

Intel Core i5-8250U [Compare]

Mode FPU monothread [28342 points +19.06%]

Mode FPU multithread [84242 points +9.97%]

Mode AVX2 monothread [54852 points +14.56%]

Mode AVX2 multithread [175965 points -0.43%]

Intel Core i7-6820HQ [Compare]

Mode FPU monothread [27299 points +14.68%]

Mode FPU multithread [101292 points +32.23%]

Mode AVX2 monothread [50409 points +5.28%]

Mode AVX2 multithread [206271 points +16.71%]

Intel Core i5-7200U [Compare]

Mode FPU monothread [25362 points +6.54%]

Mode FPU multithread [49558 points -35.31%]

Mode AVX2 monothread [47245 points -1.32%]

Mode AVX2 multithread [101638 points -42.49%]

Intel Core i5-4440 [Compare]

Mode FPU monothread [21020 points -11.70%]

Mode FPU multithread [70000 points -8.62%]

Mode AVX2 monothread [38294 points -20.02%]

Mode AVX2 multithread [138686 points -21.53%]

AMD Ryzen 5 3500U [Compare]

Mode FPU monothread [24123 points +1.34%]

Mode FPU multithread [95355 points +24.48%]

Mode AVX2 monothread [37320 points -22.05%]

Mode AVX2 multithread [151106 points -14.50%]

Intel Core i7-4790K [Compare]

Mode FPU monothread [28468 points +19.59%]

Mode FPU multithread [117844 points +53.83%]

Mode AVX2 monothread [53555 points +11.86%]

Mode AVX2 multithread [219503 points +24.20%]

Intel Core i7-6500U [Compare]

Mode FPU monothread [24373 points +2.39%]

Mode FPU multithread [51093 points -33.30%]

Mode AVX2 monothread [47102 points -1.62%]

Mode AVX2 multithread [98145 points -44.47%]

Intel Core i5-5675R [Compare]

Mode FPU monothread [28910 points +21.45%]

Mode FPU multithread [106178 points +38.60%]

Mode AVX2 monothread [51428 points +7.41%]

Mode AVX2 multithread [194201 points +9.89%]

Intel Core i5-7300U [Compare]

Mode FPU monothread [24406 points +2.53%]

Mode FPU multithread [55356 points -27.74%]

Mode AVX2 monothread [48247 points +0.77%]

Mode AVX2 multithread [109099 points -38.27%]

FPU mode comparison

Monothread integers operations

Model

Score

Intel Core i7-4500U

3313 [4.03%]