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Core i5-7400 vs i5-6600K


Description
The i5-7400 is based on Kaby Lake architecture while the i5-6600K is based on Skylake.

Using the multithread performance as a reference, the i5-7400 gets a score of 145.2 k points while the i5-6600K gets 209.3 k points.

Summarizing, the i5-6600K is 1.4 times faster than the i5-7400 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906e9
506e3
Core
Kaby Lake-S
Skylake-S
Architecture
Base frecuency
3 GHz
3.5 GHz
Boost frecuency
3.5 GHz
3.9 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
4/4
4/4
TDP
65 W
95 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
4x256 kB
256 kB
Cache L3
6144 kB
6144 kB
Date
September 2016
May 2015
Mean monothread perf.
52.69k points
59.28k points
Mean multithread perf.
173.7k points
209.28k points

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
i5-7400
i5-6600K
Test#1 (Integers)
12.72k
17.24k (x1.35)
Test#2 (FP)
19.3k
26.5k (x1.37)
Test#3 (Generic, ZIP)
4.76k
6.45k (x1.35)
Test#1 (Memory)
8.73k
9.09k (x1.04)
TOTAL
45.52k
59.28k (x1.3)

Multithread

i5-7400

i5-6600K
Test#1 (Integers)
47.95k
68.47k (x1.43)
Test#2 (FP)
71.98k
105.05k (x1.46)
Test#3 (Generic, ZIP)
17.22k
25.24k (x1.47)
Test#1 (Memory)
8.03k
10.5k (x1.31)
TOTAL
145.18k
209.28k (x1.44)

Performance/W
i5-7400
i5-6600K
Test#1 (Integers)
738 points/W
721 points/W
Test#2 (FP)
1107 points/W
1106 points/W
Test#3 (Generic, ZIP)
265 points/W
266 points/W
Test#1 (Memory)
123 points/W
111 points/W
TOTAL
2233 points/W
2203 points/W

Performance/GHz
i5-7400
i5-6600K
Test#1 (Integers)
3635 points/GHz
4420 points/GHz
Test#2 (FP)
5514 points/GHz
6795 points/GHz
Test#3 (Generic, ZIP)
1361 points/GHz
1653 points/GHz
Test#1 (Memory)
2495 points/GHz
2331 points/GHz
TOTAL
13006 points/GHz
15199 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