| | | | | | |

Core i7-8086K vs i9-7980XE


Description
The i7-8086K is based on Coffee Lake architecture while the i9-7980XE is based on Skylake.

Using the multithread performance as a reference, the i7-8086K gets a score of 352.4 k points while the i9-7980XE gets 1223.8 k points.

Summarizing, the i9-7980XE is 3.5 times faster than the i7-8086K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ea
50654
Core
Coffee Lake-S
Skylake-X
Architecture
Base frecuency
4 GHz
2.6 GHz
Boost frecuency
5 GHz
4.4 GHz
Socket
LGA 1151
LGA 2066
Cores/Threads
6/12
18/36
TDP
95 W
165 W
Cache L1 (d+i)
6x32+6x32 kB
18x32+18x32 kB
Cache L2
6x256 kB
18x1024 kB
Cache L3
12288 kB
25344 kB
Date
June 2018
May 2017
Mean monothread perf.
72.95k points
76.43k points
Mean multithread perf.
352.4k points
1223.79k points

AVX2 optimized benchmark
The benchmark in mode III (AVX2), like AVX1, is optimized to used 256 bits registers beside the second version of the Advanced Vector Extensions (AVX). The first AVX2 compatible CPU was released in 2013.
Monothread
i7-8086K
i9-7980XE
Test#1 (Integers)
28.74k
31.16k (x1.08)
Test#2 (FP)
25.31k
28.13k (x1.11)
Test#3 (Generic, ZIP)
5.78k
6.65k (x1.15)
Test#1 (Memory)
13.12k
10.5k (x0.8)
TOTAL
72.95k
76.43k (x1.05)

Multithread

i7-8086K

i9-7980XE
Test#1 (Integers)
160.53k
560.19k (x3.49)
Test#2 (FP)
147.29k
516.97k (x3.51)
Test#3 (Generic, ZIP)
35.65k
123.94k (x3.48)
Test#1 (Memory)
8.92k
22.69k (x2.54)
TOTAL
352.4k
1223.79k (x3.47)

Performance/W
i7-8086K
i9-7980XE
Test#1 (Integers)
1690 points/W
3395 points/W
Test#2 (FP)
1550 points/W
3133 points/W
Test#3 (Generic, ZIP)
375 points/W
751 points/W
Test#1 (Memory)
94 points/W
137 points/W
TOTAL
3709 points/W
7417 points/W

Performance/GHz
i7-8086K
i9-7980XE
Test#1 (Integers)
5748 points/GHz
7081 points/GHz
Test#2 (FP)
5063 points/GHz
6392 points/GHz
Test#3 (Generic, ZIP)
1156 points/GHz
1512 points/GHz
Test#1 (Memory)
2624 points/GHz
2386 points/GHz
TOTAL
14590 points/GHz
17371 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