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Core i7-8550U vs i7-5820K


Description
The i7-8550U is based on Kaby Lake architecture while the i7-5820K is based on Haswell.

Using the multithread performance as a reference, the i7-8550U gets a score of 105.9 k points while the i7-5820K gets 129.1 k points.

Summarizing, the i7-5820K is 1.2 times faster than the i7-8550U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806ea
306f2
Core
Kaby Lake-R
Haswell-E
Architecture
Base frecuency
1.8 GHz
3.3 GHz
Boost frecuency
4 GHz
3.6 GHz
Socket
BGA1356
LGA 1150
Cores/Threads
4/8
6/12
TDP
15 W
140 W
Cache L1 (d+i)
4x32+4x32 kB
32+32 kB
Cache L2
4x256 kB
256 kB
Cache L3
8192 kB
15360 kB
Date
August 2017
September 2014
Mean monothread perf.
64.2k points
31.53k points
Mean multithread perf.
166.12k 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
i7-8550U
i7-5820K
Test#1 (Integers)
3.91k
3.82k (x0.98)
Test#2 (FP)
15.98k
9.64k (x0.6)
Test#3 (Generic, ZIP)
5.11k
4.29k (x0.84)
Test#1 (Memory)
11.05k
3.78k (x0.34)
TOTAL
36.05k
21.53k (x0.6)

Multithread

i7-8550U

i7-5820K
Test#1 (Integers)
11.76k
18.07k (x1.54)
Test#2 (FP)
50.15k
64.25k (x1.28)
Test#3 (Generic, ZIP)
16.76k
27.03k (x1.61)
Test#1 (Memory)
4.17k
8.03k (x1.93)
TOTAL
82.84k
117.38k (x1.42)

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
i7-8550U
i7-5820K
Test#1 (Integers)
13.15k
12.03k (x0.91)
Test#2 (FP)
19.7k
11.23k (x0.57)
Test#3 (Generic, ZIP)
5.1k
4.55k (x0.89)
Test#1 (Memory)
9.21k
3.72k (x0.4)
TOTAL
47.16k
31.53k (x0.67)

Multithread

i7-8550U

i7-5820K
Test#1 (Integers)
34.13k
49.48k (x1.45)
Test#2 (FP)
53.79k
52.21k (x0.97)
Test#3 (Generic, ZIP)
13.91k
19.7k (x1.42)
Test#1 (Memory)
4.12k
7.67k (x1.86)
TOTAL
105.95k
129.06k (x1.22)

Performance/W
i7-8550U
i7-5820K
Test#1 (Integers)
2275 points/W
353 points/W
Test#2 (FP)
3586 points/W
373 points/W
Test#3 (Generic, ZIP)
927 points/W
141 points/W
Test#1 (Memory)
275 points/W
55 points/W
TOTAL
7063 points/W
922 points/W

Performance/GHz
i7-8550U
i7-5820K
Test#1 (Integers)
3288 points/GHz
3343 points/GHz
Test#2 (FP)
4924 points/GHz
3119 points/GHz
Test#3 (Generic, ZIP)
1275 points/GHz
1264 points/GHz
Test#1 (Memory)
2303 points/GHz
1033 points/GHz
TOTAL
11791 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