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Core i7-7700HQ vs i9-7980XE


Description
The i7-7700HQ is based on Kaby Lake architecture while the i9-7980XE is based on Skylake.

Using the multithread performance as a reference, the i7-7700HQ gets a score of 208.3 k points while the i9-7980XE gets 1223.8 k points.

Summarizing, the i9-7980XE is 5.9 times faster than the i7-7700HQ. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906e9
50654
Core
Kaby Lake-H
Skylake-X
Architecture
Base frecuency
2.8 GHz
2.6 GHz
Boost frecuency
3.8 GHz
4.4 GHz
Socket
BGA1440
LGA 2066
Cores/Threads
4/8
18/36
TDP
45 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
January 2017
May 2017
Mean monothread perf.
56.29k points
76.43k points
Mean multithread perf.
208.33k 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
i7-7700HQ
i9-7980XE
Test#1 (Integers)
3.82k
4.89k (x1.28)
Test#2 (FP)
15.49k
19.98k (x1.29)
Test#3 (Generic, ZIP)
4.96k
6.14k (x1.24)
Test#1 (Memory)
8.82k
9.81k (x1.11)
TOTAL
33.09k
40.82k (x1.23)

Multithread

i7-7700HQ

i9-7980XE
Test#1 (Integers)
14.15k
79.8k (x5.64)
Test#2 (FP)
65.81k
372.72k (x5.66)
Test#3 (Generic, ZIP)
22.41k
121.42k (x5.42)
Test#1 (Memory)
5.21k
26.48k (x5.08)
TOTAL
107.57k
600.43k (x5.58)

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
i7-7700HQ
i9-7980XE
Test#1 (Integers)
23.27k
31.16k (x1.34)
Test#2 (FP)
20.35k
28.13k (x1.38)
Test#3 (Generic, ZIP)
4.76k
6.65k (x1.4)
Test#1 (Memory)
7.92k
10.5k (x1.33)
TOTAL
56.29k
76.43k (x1.36)

Multithread

i7-7700HQ

i9-7980XE
Test#1 (Integers)
93.11k
560.19k (x6.02)
Test#2 (FP)
89.03k
516.97k (x5.81)
Test#3 (Generic, ZIP)
21.29k
123.94k (x5.82)
Test#1 (Memory)
4.9k
22.69k (x4.63)
TOTAL
208.33k
1223.79k (x5.87)

Performance/W
i7-7700HQ
i9-7980XE
Test#1 (Integers)
2069 points/W
3395 points/W
Test#2 (FP)
1978 points/W
3133 points/W
Test#3 (Generic, ZIP)
473 points/W
751 points/W
Test#1 (Memory)
109 points/W
137 points/W
TOTAL
4629 points/W
7417 points/W

Performance/GHz
i7-7700HQ
i9-7980XE
Test#1 (Integers)
6124 points/GHz
7081 points/GHz
Test#2 (FP)
5354 points/GHz
6392 points/GHz
Test#3 (Generic, ZIP)
1251 points/GHz
1512 points/GHz
Test#1 (Memory)
2083 points/GHz
2386 points/GHz
TOTAL
14813 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