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Core i7-7700K vs i3-8350K


Description
The i7-7700K is based on Kaby Lake architecture while the i3-8350K is based on Coffee Lake.

Using the multithread performance as a reference, the i7-7700K gets a score of 292.3 k points while the i3-8350K gets 237.6 k points.

Summarizing, the i7-7700K is 1.2 times faster than the i3-8350K. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906e9
906eb
Core
Kaby Lake-S
Coffee Lake-S
Architecture
Base frecuency
4.2 GHz
4 GHz
Boost frecuency
4.5 GHz
4 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
4/8
4/4
TDP
95 W
91 W
Cache L1 (d+i)
32+32 kB
4x32+4x32 kB
Cache L2
256 kB
4x256 kB
Cache L3
8192 kB
8192 kB
Date
September 2016
October 2017

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
i7-7700K
i3-8350K
Test#1 (Integers)
30879
27293 (-11.61%)
Test#2 (FP)
27266
24192 (-11.27%)
Test#3 (Generic, ZIP)
6416
5746 (-10.45%)
Test#1 (Memory)
14011
11134 (-20.54%)
TOTAL
78572
68365 (-12.99%)

Multithread

i7-7700K

i3-8350K
Test#1 (Integers)
130361
107778 (-17.32%)
Test#2 (FP)
122434
95935 (-21.64%)
Test#3 (Generic, ZIP)
29679
22653 (-23.68%)
Test#1 (Memory)
9830
11262 (14.57%)
TOTAL
292304
237627 (-18.71%)

Performance/W
i7-7700K
i3-8350K
Test#1 (Integers)
1372 points/W
1184 points/W
Test#2 (FP)
1289 points/W
1054 points/W
Test#3 (Generic, ZIP)
312 points/W
249 points/W
Test#1 (Memory)
103 points/W
124 points/W
TOTAL
3077 points/W
2611 points/W

Performance/GHz
i7-7700K
i3-8350K
Test#1 (Integers)
6862 points/GHz
6823 points/GHz
Test#2 (FP)
6059 points/GHz
6048 points/GHz
Test#3 (Generic, ZIP)
1426 points/GHz
1436 points/GHz
Test#1 (Memory)
3114 points/GHz
2784 points/GHz
TOTAL
17460 points/GHz
17091 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. 3.7.9