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Core i5-6400 vs i3-6100T


Description
Both models i5-6400 and i3-6100T are based on Skylake architecture.

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.

Using the multithread performance as a reference, the i5-6400 gets a score of 174.1 k points while the i3-6100T gets 105.2 k points.

Summarizing, the i5-6400 is 1.7 times faster than the i3-6100T. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
506e3
Core
Skylake-S
Skylake-S
Architecture
Base frecuency
2.7 GHz
3.2 GHz
Boost frecuency
3.3 GHz
3.2 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
4/4
2/4
TDP
65 W
35 W
Cache L1 (d+i)
4x32+4x32 kB
2x32+2x32 kB
Cache L2
4x256 kB
2x256 kB
Cache L3
6144 kB
3072 kB
Date
September 2015
November 2015
Mean monothread perf.
48.05k points
43.92k points
Mean multithread perf.
174.05k points
105.21k 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
i5-6400
i3-6100T
Test#1 (Integers)
3.2k
3.14k (x0.98)
Test#2 (FP)
12.81k
12.26k (x0.96)
Test#3 (Generic, ZIP)
4.18k
3.94k (x0.94)
Test#1 (Memory)
4.3k
2.21k (x0.51)
TOTAL
24.49k
21.55k (x0.88)

Multithread

i5-6400

i3-6100T
Test#1 (Integers)
11.45k
6.52k (x0.57)
Test#2 (FP)
46.67k
30.61k (x0.66)
Test#3 (Generic, ZIP)
14.69k
10.59k (x0.72)
Test#1 (Memory)
5.92k
2.77k (x0.47)
TOTAL
78.73k
50.49k (x0.64)

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
i5-6400
i3-6100T
Test#1 (Integers)
11.82k
10.46k (x0.88)
Test#2 (FP)
18.36k
17.55k (x0.96)
Test#3 (Generic, ZIP)
4.43k
3.71k (x0.84)
Test#1 (Memory)
4.95k
3.07k (x0.62)
TOTAL
39.56k
34.79k (x0.88)

Multithread

i5-6400

i3-6100T
Test#1 (Integers)
46.04k
23.92k (x0.52)
Test#2 (FP)
69.47k
42.11k (x0.61)
Test#3 (Generic, ZIP)
16.33k
10.51k (x0.64)
Test#1 (Memory)
7.74k
2.57k (x0.33)
TOTAL
139.58k
79.1k (x0.57)

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
i5-6400
i3-6100T
Test#1 (Integers)
21.1k
19.58k (x0.93)
Test#2 (FP)
18.28k
16.97k (x0.93)
Test#3 (Generic, ZIP)
4.22k
3.91k (x0.93)
Test#1 (Memory)
4.45k
3.47k (x0.78)
TOTAL
48.05k
43.92k (x0.91)

Multithread

i5-6400

i3-6100T
Test#1 (Integers)
80.03k
47.02k (x0.59)
Test#2 (FP)
71.1k
44.41k (x0.62)
Test#3 (Generic, ZIP)
16.19k
9.93k (x0.61)
Test#1 (Memory)
6.73k
3.85k (x0.57)
TOTAL
174.05k
105.21k (x0.6)

Performance/W
i5-6400
i3-6100T
Test#1 (Integers)
1231 points/W
1344 points/W
Test#2 (FP)
1094 points/W
1269 points/W
Test#3 (Generic, ZIP)
249 points/W
284 points/W
Test#1 (Memory)
104 points/W
110 points/W
TOTAL
2678 points/W
3006 points/W

Performance/GHz
i5-6400
i3-6100T
Test#1 (Integers)
6394 points/GHz
6119 points/GHz
Test#2 (FP)
5539 points/GHz
5303 points/GHz
Test#3 (Generic, ZIP)
1279 points/GHz
1221 points/GHz
Test#1 (Memory)
1348 points/GHz
1084 points/GHz
TOTAL
14560 points/GHz
13726 points/GHz

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) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


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

grafica bm.hardlimit.com


Test#1 (Memory) [points 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) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


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

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Hardlimit Benchmark Central - Ver. 3.11.4