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Core i3-7100 vs i7-5820K


Description
The i3-7100 is based on Kaby Lake architecture while the i7-5820K is based on Haswell.

Using the multithread performance as a reference, the i3-7100 gets a score of 100.1 k points while the i7-5820K gets 129.1 k points.

Summarizing, the i7-5820K is 1.3 times faster than the i3-7100. 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
3.9 GHz
3.3 GHz
Boost frecuency
3.9 GHz
3.6 GHz
Socket
LGA 1151
LGA 1150
Cores/Threads
2/4
6/12
TDP
51 W
140 W
Cache L1 (d+i)
2x32+2x32 kB
32+32 kB
Cache L2
2x256 kB
256 kB
Cache L3
3072 kB
15360 kB
Date
January 2017
September 2014
Mean monothread perf.
58.55k points
31.53k points
Mean multithread perf.
126.47k 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
i3-7100
i7-5820K
Test#1 (Integers)
4.01k
3.82k (x0.95)
Test#2 (FP)
16.38k
9.64k (x0.59)
Test#3 (Generic, ZIP)
5.31k
4.29k (x0.81)
Test#1 (Memory)
3.98k
3.78k (x0.95)
TOTAL
29.69k
21.53k (x0.73)

Multithread

i3-7100

i7-5820K
Test#1 (Integers)
8.1k
18.07k (x2.23)
Test#2 (FP)
38.7k
64.25k (x1.66)
Test#3 (Generic, ZIP)
12.69k
27.03k (x2.13)
Test#1 (Memory)
3.76k
8.03k (x2.14)
TOTAL
63.24k
117.38k (x1.86)

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
i3-7100
i7-5820K
Test#1 (Integers)
14.41k
12.03k (x0.84)
Test#2 (FP)
22.38k
11.23k (x0.5)
Test#3 (Generic, ZIP)
5.45k
4.55k (x0.83)
Test#1 (Memory)
4.96k
3.72k (x0.75)
TOTAL
47.21k
31.53k (x0.67)

Multithread

i3-7100

i7-5820K
Test#1 (Integers)
30.48k
49.48k (x1.62)
Test#2 (FP)
52.08k
52.21k (x1)
Test#3 (Generic, ZIP)
12.97k
19.7k (x1.52)
Test#1 (Memory)
4.56k
7.67k (x1.68)
TOTAL
100.1k
129.06k (x1.29)

Performance/W
i3-7100
i7-5820K
Test#1 (Integers)
598 points/W
353 points/W
Test#2 (FP)
1021 points/W
373 points/W
Test#3 (Generic, ZIP)
254 points/W
141 points/W
Test#1 (Memory)
89 points/W
55 points/W
TOTAL
1963 points/W
922 points/W

Performance/GHz
i3-7100
i7-5820K
Test#1 (Integers)
3695 points/GHz
3343 points/GHz
Test#2 (FP)
5739 points/GHz
3119 points/GHz
Test#3 (Generic, ZIP)
1399 points/GHz
1264 points/GHz
Test#1 (Memory)
1273 points/GHz
1033 points/GHz
TOTAL
12105 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