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Core i5-6500 vs i9-7980XE


Description
Both models i5-6500 and i9-7980XE are based on Skylake architecture.

Sky Lake is also known as 6th generation Core. Include Thunderbolt 3.0, SATA Express and Iris Pro graphics with DirectX 12. It uses LGA 1151 socket for mainstream models and LGA 2066 for X-Series. Sky Lake comes with AVX2 support in all mainstreams CPUs and AVX-512 in some high end models.

Using the multithread performance as a reference, the i5-6500 gets a score of 179.4 k points while the i9-7980XE gets 1223.8 k points.

Summarizing, the i9-7980XE is 6.8 times faster than the i5-6500 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
50654
Core
Skylake-S
Skylake-X
Architecture
Base frecuency
3.2 GHz
2.6 GHz
Boost frecuency
3.6 GHz
4.4 GHz
Socket
LGA 1151
LGA 2066
Cores/Threads
4/4
18/36
TDP
65 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
September 2015
May 2017
Mean monothread perf.
53.7k points
76.43k points
Mean multithread perf.
179.44k 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
i5-6500
i9-7980XE
Test#1 (Integers)
3.46k
4.89k (x1.41)
Test#2 (FP)
14.61k
19.98k (x1.37)
Test#3 (Generic, ZIP)
4.66k
6.14k (x1.32)
Test#1 (Memory)
6.99k
9.81k (x1.4)
TOTAL
29.71k
40.82k (x1.37)

Multithread

i5-6500

i9-7980XE
Test#1 (Integers)
12.52k
79.8k (x6.37)
Test#2 (FP)
51.13k
372.72k (x7.29)
Test#3 (Generic, ZIP)
17.41k
121.42k (x6.97)
Test#1 (Memory)
3.9k
26.48k (x6.8)
TOTAL
84.96k
600.43k (x7.07)

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
i5-6500
i9-7980XE
Test#1 (Integers)
22.89k
31.16k (x1.36)
Test#2 (FP)
19.87k
28.13k (x1.42)
Test#3 (Generic, ZIP)
4.58k
6.65k (x1.45)
Test#1 (Memory)
6.36k
10.5k (x1.65)
TOTAL
53.7k
76.43k (x1.42)

Multithread

i5-6500

i9-7980XE
Test#1 (Integers)
84.36k
560.19k (x6.64)
Test#2 (FP)
72.91k
516.97k (x7.09)
Test#3 (Generic, ZIP)
16.08k
123.94k (x7.71)
Test#1 (Memory)
6.1k
22.69k (x3.72)
TOTAL
179.44k
1223.79k (x6.82)

Performance/W
i5-6500
i9-7980XE
Test#1 (Integers)
1298 points/W
3395 points/W
Test#2 (FP)
1122 points/W
3133 points/W
Test#3 (Generic, ZIP)
247 points/W
751 points/W
Test#1 (Memory)
94 points/W
137 points/W
TOTAL
2761 points/W
7417 points/W

Performance/GHz
i5-6500
i9-7980XE
Test#1 (Integers)
6359 points/GHz
7081 points/GHz
Test#2 (FP)
5521 points/GHz
6392 points/GHz
Test#3 (Generic, ZIP)
1271 points/GHz
1512 points/GHz
Test#1 (Memory)
1766 points/GHz
2386 points/GHz
TOTAL
14917 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