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Core i5-7400 vs i7-5820K


Description
The i5-7400 is based on Kaby Lake architecture while the i7-5820K is based on Haswell.

Using the multithread performance as a reference, the i5-7400 gets a score of 145.2 k points while the i7-5820K gets 129.1 k points.

Summarizing, the i5-7400 is 1.1 times faster than the i7-5820K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906e9
306f2
Core
Kaby Lake-S
Haswell-E
Architecture
Base frecuency
3 GHz
3.3 GHz
Boost frecuency
3.5 GHz
3.6 GHz
Socket
LGA 1151
LGA 1150
Cores/Threads
4/4
6/12
TDP
65 W
140 W
Cache L1 (d+i)
4x32+4x32 kB
32+32 kB
Cache L2
4x256 kB
256 kB
Cache L3
6144 kB
15360 kB
Date
September 2016
September 2014
Mean monothread perf.
52.69k points
31.53k points
Mean multithread perf.
173.7k points
129.06k 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
i7-5820K
Test#1 (Integers)
12.72k
12.03k (x0.95)
Test#2 (FP)
19.3k
11.23k (x0.58)
Test#3 (Generic, ZIP)
4.76k
4.55k (x0.95)
Test#1 (Memory)
8.73k
3.72k (x0.43)
TOTAL
45.52k
31.53k (x0.69)

Multithread

i5-7400

i7-5820K
Test#1 (Integers)
47.95k
49.48k (x1.03)
Test#2 (FP)
71.98k
52.21k (x0.73)
Test#3 (Generic, ZIP)
17.22k
19.7k (x1.14)
Test#1 (Memory)
8.03k
7.67k (x0.96)
TOTAL
145.18k
129.06k (x0.89)

Performance/W
i5-7400
i7-5820K
Test#1 (Integers)
738 points/W
353 points/W
Test#2 (FP)
1107 points/W
373 points/W
Test#3 (Generic, ZIP)
265 points/W
141 points/W
Test#1 (Memory)
123 points/W
55 points/W
TOTAL
2233 points/W
922 points/W

Performance/GHz
i5-7400
i7-5820K
Test#1 (Integers)
3635 points/GHz
3343 points/GHz
Test#2 (FP)
5514 points/GHz
3119 points/GHz
Test#3 (Generic, ZIP)
1361 points/GHz
1264 points/GHz
Test#1 (Memory)
2495 points/GHz
1033 points/GHz
TOTAL
13006 points/GHz
8759 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