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Core i7-7820HQ vs i5-8259U


Description
The i7-7820HQ is based on Kaby Lake architecture while the i5-8259U is based on Coffee Lake.

Using the multithread performance as a reference, the i7-7820HQ gets a score of 196.6 k points while the i5-8259U gets 229 k points.

Summarizing, the i5-8259U is 1.2 times faster than the i7-7820HQ. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906e9
806ea
Core
Kaby Lake-H
Coffee Lake-U
Architecture
Base frecuency
2.9 GHz
2.3 GHz
Boost frecuency
3.9 GHz
3.8 GHz
Socket
BGA 1440
BGA 1528
Cores/Threads
4/8
4/8
TDP
45 W
28 W
Cache L1 (d+i)
4x32+x4x32 kB
4x32+x4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
8192 kB
6144 kB
Date
January 2017
March 2018
Mean monothread perf.
55.85k points
54.55k points
Mean multithread perf.
196.55k points
229k 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
i7-7820HQ
i5-8259U
Test#1 (Integers)
23.23k
21.06k (x0.91)
Test#2 (FP)
20.13k
19.79k (x0.98)
Test#3 (Generic, ZIP)
4.57k
4.72k (x1.03)
Test#1 (Memory)
7.92k
8.98k (x1.13)
TOTAL
55.85k
54.55k (x0.98)

Multithread

i7-7820HQ

i5-8259U
Test#1 (Integers)
85.54k
96.43k (x1.13)
Test#2 (FP)
87.07k
85.46k (x0.98)
Test#3 (Generic, ZIP)
20.37k
22.31k (x1.1)
Test#1 (Memory)
3.57k
24.81k (x6.95)
TOTAL
196.55k
229k (x1.17)

Performance/W
i7-7820HQ
i5-8259U
Test#1 (Integers)
1901 points/W
3444 points/W
Test#2 (FP)
1935 points/W
3052 points/W
Test#3 (Generic, ZIP)
453 points/W
797 points/W
Test#1 (Memory)
79 points/W
886 points/W
TOTAL
4368 points/W
8179 points/W

Performance/GHz
i7-7820HQ
i5-8259U
Test#1 (Integers)
5956 points/GHz
5543 points/GHz
Test#2 (FP)
5163 points/GHz
5208 points/GHz
Test#3 (Generic, ZIP)
1172 points/GHz
1241 points/GHz
Test#1 (Memory)
2030 points/GHz
2363 points/GHz
TOTAL
14321 points/GHz
14355 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