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Core i5-8250U vs i9-7980XE


Description
The i5-8250U is based on Kaby Lake architecture while the i9-7980XE is based on Skylake.

Using the multithread performance as a reference, the i5-8250U gets a score of 161.3 k points while the i9-7980XE gets 1223.8 k points.

Summarizing, the i9-7980XE is 7.6 times faster than the i5-8250U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806ea
50654
Core
Kaby Lake-R
Skylake-X
Architecture
Base frecuency
1.6 GHz
2.6 GHz
Boost frecuency
3.4 GHz
4.4 GHz
Socket
BGA1356
LGA 2066
Cores/Threads
4/8
18/36
TDP
15 W
165 W
Cache L1 (d+i)
4x32+4x32 kB
18x32+18x32 kB
Cache L2
4x256 kB
18x1024 kB
Cache L3
6144 kB
25344 kB
Date
August 2017
May 2017
Mean monothread perf.
54.31k points
76.43k points
Mean multithread perf.
161.26k points
1223.79k 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
i5-8250U
i9-7980XE
Test#1 (Integers)
3.32k
4.89k (x1.47)
Test#2 (FP)
13.5k
19.98k (x1.48)
Test#3 (Generic, ZIP)
4.11k
6.14k (x1.5)
Test#1 (Memory)
7.42k
9.81k (x1.32)
TOTAL
28.34k
40.82k (x1.44)

Multithread

i5-8250U

i9-7980XE
Test#1 (Integers)
13.97k
79.8k (x5.71)
Test#2 (FP)
50.8k
372.72k (x7.34)
Test#3 (Generic, ZIP)
14.71k
121.42k (x8.25)
Test#1 (Memory)
4.76k
26.48k (x5.56)
TOTAL
84.24k
600.43k (x7.13)

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
i5-8250U
i9-7980XE
Test#1 (Integers)
22.11k
31.16k (x1.41)
Test#2 (FP)
19.64k
28.13k (x1.43)
Test#3 (Generic, ZIP)
4.54k
6.65k (x1.47)
Test#1 (Memory)
8.03k
10.5k (x1.31)
TOTAL
54.31k
76.43k (x1.41)

Multithread

i5-8250U

i9-7980XE
Test#1 (Integers)
74.19k
560.19k (x7.55)
Test#2 (FP)
66.27k
516.97k (x7.8)
Test#3 (Generic, ZIP)
15.97k
123.94k (x7.76)
Test#1 (Memory)
4.83k
22.69k (x4.7)
TOTAL
161.26k
1223.79k (x7.59)

Performance/W
i5-8250U
i9-7980XE
Test#1 (Integers)
4946 points/W
3395 points/W
Test#2 (FP)
4418 points/W
3133 points/W
Test#3 (Generic, ZIP)
1065 points/W
751 points/W
Test#1 (Memory)
322 points/W
137 points/W
TOTAL
10751 points/W
7417 points/W

Performance/GHz
i5-8250U
i9-7980XE
Test#1 (Integers)
6503 points/GHz
7081 points/GHz
Test#2 (FP)
5777 points/GHz
6392 points/GHz
Test#3 (Generic, ZIP)
1334 points/GHz
1512 points/GHz
Test#1 (Memory)
2361 points/GHz
2386 points/GHz
TOTAL
15975 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