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Core i3-8100 vs i7-5820K


Description
The i3-8100 is based on Coffee Lake architecture while the i7-5820K is based on Haswell.

Using the multithread performance as a reference, the i3-8100 gets a score of 157.6 k points while the i7-5820K gets 129.1 k points.

Summarizing, the i3-8100 is 1.2 times faster than the i7-5820K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906eb
306f2
Core
Coffee Lake-S
Haswell-E
Architecture
Base frecuency
3.6 GHz
3.3 GHz
Boost frecuency
3.6 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
6x32+6x32 kB
Cache L2
4x256 kB
6x256 kB
Cache L3
6144 kB
15360 kB
Date
October 2017
September 2014
Mean monothread perf.
59.18k points
31.53k points
Mean multithread perf.
200.4k points
129.06k 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
i3-8100
i7-5820K
Test#1 (Integers)
3.72k
3.82k (x1.03)
Test#2 (FP)
15.33k
9.64k (x0.63)
Test#3 (Generic, ZIP)
4.71k
4.29k (x0.91)
Test#1 (Memory)
6.76k
3.78k (x0.56)
TOTAL
30.52k
21.53k (x0.71)

Multithread

i3-8100

i7-5820K
Test#1 (Integers)
14.48k
18.07k (x1.25)
Test#2 (FP)
59.59k
64.25k (x1.08)
Test#3 (Generic, ZIP)
18.07k
27.03k (x1.5)
Test#1 (Memory)
4.3k
8.03k (x1.87)
TOTAL
96.43k
117.38k (x1.22)

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
i3-8100
i7-5820K
Test#1 (Integers)
13.52k
12.03k (x0.89)
Test#2 (FP)
20.57k
11.23k (x0.55)
Test#3 (Generic, ZIP)
4.96k
4.55k (x0.92)
Test#1 (Memory)
7.91k
3.72k (x0.47)
TOTAL
46.96k
31.53k (x0.67)

Multithread

i3-8100

i7-5820K
Test#1 (Integers)
53.4k
49.48k (x0.93)
Test#2 (FP)
80.87k
52.21k (x0.65)
Test#3 (Generic, ZIP)
19.03k
19.7k (x1.04)
Test#1 (Memory)
4.29k
7.67k (x1.79)
TOTAL
157.59k
129.06k (x0.82)

Performance/W
i3-8100
i7-5820K
Test#1 (Integers)
822 points/W
353 points/W
Test#2 (FP)
1244 points/W
373 points/W
Test#3 (Generic, ZIP)
293 points/W
141 points/W
Test#1 (Memory)
66 points/W
55 points/W
TOTAL
2425 points/W
922 points/W

Performance/GHz
i3-8100
i7-5820K
Test#1 (Integers)
3757 points/GHz
3343 points/GHz
Test#2 (FP)
5714 points/GHz
3119 points/GHz
Test#3 (Generic, ZIP)
1377 points/GHz
1264 points/GHz
Test#1 (Memory)
2196 points/GHz
1033 points/GHz
TOTAL
13044 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