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Core i7-8650U vs i7-9700K


Description
The i7-8650U is based on Kaby Lake architecture while the i7-9700K is based on Coffee Lake.

Using the multithread performance as a reference, the i7-8650U gets a score of 173.5 k points while the i7-9700K gets 460 k points.

Summarizing, the i7-9700K is 2.7 times faster than the i7-8650U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806ea
906ec
Core
Kaby Lake-R
Coffee Lake-S
Architecture
Base frecuency
1.9 GHz
3.6 GHz
Boost frecuency
4.2 GHz
4.9 GHz
Socket
BGA 1356
LGA 1151
Cores/Threads
4/8
8/8
TDP
15 W
95 W
Cache L1 (d+i)
4x32+4x32 kB
8x32+8x32 kB
Cache L2
4x256 kB
8x256 kB
Cache L3
8192 kB
12288 kB
Date
August 2017
October 2018
Mean monothread perf.
55.86k points
73.62k points
Mean multithread perf.
173.49k points
460.02k 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
i7-8650U
i7-9700K
Test#1 (Integers)
21.61k
29.3k (x1.36)
Test#2 (FP)
19.69k
25.61k (x1.3)
Test#3 (Generic, ZIP)
4.61k
5.86k (x1.27)
Test#1 (Memory)
9.95k
12.86k (x1.29)
TOTAL
55.86k
73.62k (x1.32)

Multithread

i7-8650U

i7-9700K
Test#1 (Integers)
78.38k
217.77k (x2.78)
Test#2 (FP)
72.02k
190.46k (x2.64)
Test#3 (Generic, ZIP)
16.95k
40.48k (x2.39)
Test#1 (Memory)
6.15k
11.31k (x1.84)
TOTAL
173.49k
460.02k (x2.65)

Performance/W
i7-8650U
i7-9700K
Test#1 (Integers)
5225 points/W
2292 points/W
Test#2 (FP)
4802 points/W
2005 points/W
Test#3 (Generic, ZIP)
1130 points/W
426 points/W
Test#1 (Memory)
410 points/W
119 points/W
TOTAL
11566 points/W
4842 points/W

Performance/GHz
i7-8650U
i7-9700K
Test#1 (Integers)
5146 points/GHz
5981 points/GHz
Test#2 (FP)
4689 points/GHz
5226 points/GHz
Test#3 (Generic, ZIP)
1097 points/GHz
1195 points/GHz
Test#1 (Memory)
2368 points/GHz
2624 points/GHz
TOTAL
13300 points/GHz
15025 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