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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
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
Mean monothread perf.
47.88k points
Mean multithread perf.
176.73k points

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)
3.18k
10.78k (x3.4)
Test#2 (FP)
12.58k
44.11k (x3.5)
Test#3 (Generic, ZIP)
4.11k
13.89k (x3.4)
Test#1 (Memory)
3.93k
7.83k (x2.0)
TOTAL
23.8k
76.61k (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)
11.41k
41.47k (x3.6)
Test#2 (FP)
16.35k
65.46k (x4.0)
Test#3 (Generic, ZIP)
4.15k
16.2k (x3.9)
Test#1 (Memory)
3.28k
7.66k (x2.3)
TOTAL
35.19k
130.8k (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)
11.82k
46.04k (x3.9)
Test#2 (FP)
18.36k
69.47k (x3.8)
Test#3 (Generic, ZIP)
4.43k
16.33k (x3.7)
Test#1 (Memory)
4.95k
7.74k (x1.6)
TOTAL
39.56k
139.58k (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)
21.21k
80.36k (x3.8)
Test#2 (FP)
18.15k
71.94k (x4.0)
Test#3 (Generic, ZIP)
4.21k
16.37k (x3.9)
Test#1 (Memory)
4.3k
8.05k (x1.9)
TOTAL
47.88k
176.73k (x3.7)

Computers where this CPU was tested
Model
Release date

RAM models tested along with this CPU
Model
Type
Frequency
Size
DDR4
2133 MHz
4 GB

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]

grafica bm.hardlimit.com


Test#2 (FP) [% vs time]

grafica bm.hardlimit.com


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

grafica bm.hardlimit.com


Test#1 (Memory) [% vs time]

grafica bm.hardlimit.com

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]

grafica bm.hardlimit.coma


Test#2 (FP) [% vs time]

grafica bm.hardlimit.coma


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

grafica bm.hardlimit.coma


Test#1 (Memory) [% vs time]

grafica bm.hardlimit.coma

Similar CPUs to Core i5-6400
Core i5-6400 (This model)
 Mode FPU monothread  [23.8k points]
 Mode FPU multithread  [76.61k points]
 Mode AVX2 monothread  [47.88k points]
 Mode AVX2 multithread  [176.73k points]
 Mode FPU monothread  [30.83k points +29.51%]
 Mode FPU multithread  [90.85k points +18.60%]
 Mode AVX2 monothread  [54.11k points +13.01%]
 Mode AVX2 multithread  [169.99k points -3.81%]
 Mode FPU monothread  [28.34k points +19.06%]
 Mode FPU multithread  [84.24k points +9.97%]
 Mode AVX2 monothread  [55.01k points +14.90%]
 Mode AVX2 multithread  [166.25k points -5.93%]
 Mode FPU monothread  [25.36k points +6.54%]
 Mode FPU multithread  [49.56k points -35.31%]
 Mode AVX2 monothread  [47.24k points -1.32%]
 Mode AVX2 multithread  [101.64k points -42.49%]
 Mode FPU monothread  [27.3k points +14.68%]
 Mode FPU multithread  [101.29k points +32.23%]
 Mode AVX2 monothread  [50.41k points +5.28%]
 Mode AVX2 multithread  [206.27k points +16.71%]
 Mode FPU monothread  [21.02k points -11.70%]
 Mode FPU multithread  [70k points -8.62%]
 Mode AVX2 monothread  [38.29k points -20.02%]
 Mode AVX2 multithread  [138.69k points -21.53%]
 Mode FPU monothread  [28.47k points +19.59%]
 Mode FPU multithread  [117.84k points +53.83%]
 Mode AVX2 monothread  [52.47k points +9.59%]
 Mode AVX2 multithread  [215.47k points +21.92%]
 Mode FPU monothread  [24.41k points +2.53%]
 Mode FPU multithread  [55.36k points -27.74%]
 Mode AVX2 monothread  [48.25k points +0.77%]
 Mode AVX2 multithread  [109.1k points -38.27%]
 Mode FPU monothread  [24.37k points +2.39%]
 Mode FPU multithread  [51.09k points -33.30%]
 Mode AVX2 monothread  [46.25k points -3.41%]
 Mode AVX2 multithread  [97.52k points -44.82%]
 Mode FPU monothread  [24.12k points +1.34%]
 Mode FPU multithread  [95.36k points +24.48%]
 Mode AVX2 monothread  [38.07k points -20.49%]
 Mode AVX2 multithread  [153.33k points -13.24%]
 Mode FPU monothread  [28.91k points +21.45%]
 Mode FPU multithread  [106.18k points +38.60%]
 Mode AVX2 monothread  [51.43k points +7.41%]
 Mode AVX2 multithread  [194.2k points +9.89%]
          
FPU mode comparison

Monothread integers operations
Model
Score
3.24k [1.77%]
Intel Core i5-6400
3.18k
This model
3.18k [-0.16%]
3.15k [-0.95%]
3.14k [-1.52%]
3.11k [-2.44%]

Multithread integers operations
Model
Score
11.9k [10.41%]
11.76k [9.13%]
11.66k [8.17%]
Intel Core i5-6400
10.78k
This model
10.37k [-3.82%]
9.67k [-10.31%]
9.46k [-12.23%]

Monothread floating point operations
Model
Score
13.02k [3.49%]
12.85k [2.16%]
12.84k [2.07%]
12.71k [1.02%]
Intel Core i5-6400
12.58k
This model
12.26k [-2.52%]
12.24k [-2.73%]
12.23k [-2.79%]
12.19k [-3.15%]

Multithread floating point operations
Model
Score
50.15k [13.69%]
48.01k [8.82%]
45.98k [4.24%]
44.15k [0.09%]
Intel Core i5-6400
44.11k
This model
41.12k [-6.79%]
38.7k [-12.27%]
37.75k [-14.42%]

Monothread generic test (Zip compression)
Model
Score
Intel Core i5-6400
4.11k
This model
3.94k [-4.06%]

Multithread generic test (Zip compression)
Model
Score
14.71k [5.95%]
14.65k [5.50%]
14.35k [3.34%]
14.31k [3.06%]
Intel Core i5-6400
13.89k
This model
13.76k [-0.94%]
13.43k [-3.30%]
12.69k [-8.62%]
12.38k [-10.88%]
12.13k [-12.66%]

Monothread memory performance
Model
Score
3.98k [1.27%]
Intel Core i5-6400
3.93k
This model
3.92k [-0.28%]
3.79k [-3.75%]

Multithread memory performance
Model
Score
Intel Core i5-6400
7.83k
This model
7.68k [-1.95%]
          
SSE mode comparison

Monothread integers operations
Model
Score
11.71k [2.66%]
11.67k [2.27%]
11.54k [1.09%]
Intel Core i5-6400
11.41k
This model
11.39k [-0.20%]
11.11k [-2.68%]
11.05k [-3.13%]
10.92k [-4.34%]
10.59k [-7.23%]

Multithread integers operations
Model
Score
46.54k [12.22%]
44.61k [7.55%]
44.38k [7.01%]
42.48k [2.42%]
Intel Core i5-6400
41.47k
This model
41.11k [-0.88%]
40.24k [-2.98%]
36.86k [-11.13%]
34.73k [-16.27%]

Monothread floating point operations
Model
Score
17.94k [9.72%]
16.85k [3.07%]
16.74k [2.36%]
16.69k [2.05%]
16.47k [0.72%]
Intel Core i5-6400
16.35k
This model
15.97k [-2.32%]
15.85k [-3.10%]
15.11k [-7.61%]
14.35k [-12.22%]
14.02k [-14.27%]

Multithread floating point operations
Model
Score
75.62k [15.52%]
74.19k [13.34%]
72.58k [10.88%]
65.99k [0.80%]
Intel Core i5-6400
65.46k
This model
65.04k [-0.65%]
64.61k [-1.30%]
63.29k [-3.32%]
62.55k [-4.45%]
60.2k [-8.03%]

Monothread generic test (Zip compression)
Model
Score
Intel Core i5-6400
4.15k
This model
4.06k [-2.16%]

Multithread generic test (Zip compression)
Model
Score
17.77k [9.71%]
17.53k [8.21%]
17.4k [7.39%]
16.65k [2.79%]
Intel Core i5-6400
16.2k
This model
15.84k [-2.22%]
15.78k [-2.62%]
15.6k [-3.69%]
15.47k [-4.49%]

Monothread memory performance
Model
Score
3.29k [0.49%]
Intel Core i5-6400
3.28k
This model
3.13k [-4.60%]
3.08k [-5.95%]

Multithread memory performance
Model
Score
Intel Core i5-6400
7.66k
This model
7.16k [-6.56%]
6.92k [-9.68%]
          
AVX mode comparison

Monothread integers operations
Model
Score
12.12k [2.49%]
Intel Core i5-6400
11.82k
This model
11.78k [-0.34%]
11.59k [-2.02%]
11.56k [-2.23%]
11.54k [-2.42%]
11.51k [-2.69%]

Multithread integers operations
Model
Score
Intel Core i5-6400
46.04k
This model
45.91k [-0.29%]
45.75k [-0.65%]
45.74k [-0.67%]
45.51k [-1.16%]
44.81k [-2.68%]

Monothread floating point operations
Model
Score
19.05k [3.79%]
18.97k [3.36%]
18.89k [2.90%]
18.61k [1.36%]
Intel Core i5-6400
18.36k
This model
18.27k [-0.47%]
18.06k [-1.64%]
17.89k [-2.54%]
17.55k [-4.39%]
17.37k [-5.40%]

Multithread floating point operations
Model
Score
73.73k [6.14%]
70.25k [1.13%]
69.55k [0.12%]
Intel Core i5-6400
69.47k
This model
67.5k [-2.83%]
66.48k [-4.30%]
61.3k [-11.76%]
60.65k [-12.69%]

Monothread generic test (Zip compression)
Model
Score
Intel Core i5-6400
4.43k
This model
4.21k [-4.86%]

Multithread generic test (Zip compression)
Model
Score
17.66k [8.16%]
16.79k [2.85%]
16.61k [1.73%]
Intel Core i5-6400
16.33k
This model
16.11k [-1.35%]
15.18k [-7.07%]
14.86k [-8.99%]
14.64k [-10.35%]

Monothread memory performance
Model
Score
5.1k [2.99%]
4.96k [0.28%]
Intel Core i5-6400
4.95k
This model
4.93k [-0.47%]
4.8k [-3.05%]
4.77k [-3.72%]

Multithread memory performance
Model
Score
Intel Core i5-6400
7.74k
This model
          
AVX2 mode comparison

Monothread integers operations
Model
Score
21.63k [1.95%]
21.61k [1.88%]
21.4k [0.87%]
21.33k [0.54%]
Intel Core i5-6400
21.21k
This model
21.2k [-0.08%]
21.15k [-0.31%]
21.09k [-0.57%]
21.06k [-0.70%]

Multithread integers operations
Model
Score
84.92k [5.68%]
84.13k [4.70%]
81.03k [0.83%]
80.69k [0.41%]
Intel Core i5-6400
80.36k
This model
79.12k [-1.54%]
78.38k [-2.47%]
77.55k [-3.50%]
77.04k [-4.14%]

Monothread floating point operations
Model
Score
18.59k [2.43%]
18.57k [2.32%]
18.34k [1.05%]
18.32k [0.96%]
18.32k [0.93%]
Intel Core i5-6400
18.15k
This model
17.84k [-1.70%]
17.58k [-3.12%]
17.47k [-3.76%]
17.29k [-4.72%]
17.26k [-4.87%]

Multithread floating point operations
Model
Score
75.49k [4.93%]
73.32k [1.91%]
72.09k [0.20%]
72.02k [0.11%]
Intel Core i5-6400
71.94k
This model
70.84k [-1.54%]
69.07k [-3.99%]
68.28k [-5.08%]
67.53k [-6.14%]
67.49k [-6.20%]

Monothread generic test (Zip compression)
Model
Score
4.22k [0.19%]
Intel Core i5-6400
4.21k
This model
4.07k [-3.47%]
4.05k [-3.94%]

Multithread generic test (Zip compression)
Model
Score
16.95k [3.48%]
16.77k [2.43%]
16.69k [1.91%]
16.48k [0.65%]
Intel Core i5-6400
16.37k
This model
15.82k [-3.37%]
15.65k [-4.41%]
15.63k [-4.56%]
15.36k [-6.17%]
14.4k [-12.08%]

Monothread memory performance
Model
Score
4.44k [3.17%]
4.31k [0.21%]
Intel Core i5-6400
4.3k
This model
4.29k [-0.38%]
4.24k [-1.46%]
4.24k [-1.53%]
4.22k [-1.98%]

Multithread memory performance
Model
Score
8.17k [1.42%]
Intel Core i5-6400
8.05k
This model
8.03k [-0.32%]
8.01k [-0.50%]
7.95k [-1.23%]
7.94k [-1.42%]

Hardlimit Benchmark Central - Ver. 3.11.2