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Core i3-8350K vs i7-6900K


Description
The i3-8350K is based on Coffee Lake architecture while the i7-6900K is based on Broadwell.

Using the multithread performance as a reference, the i3-8350K gets a score of 237.6 k points while the i7-6900K gets 427.5 k points.

Summarizing, the i7-6900K is 1.8 times faster than the i3-8350K. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906eb
406f1
Core
Coffee Lake-S
Broadwell-E
Architecture
Base frecuency
4 GHz
3.2 GHz
Boost frecuency
4 GHz
3.7 GHz
Socket
LGA 1151
LGA 2011-3
Cores/Threads
4/4
8/16
TDP
91 W
140 W
Cache L1 (d+i)
4x32+4x32 kB
8x32+8x32 kB
Cache L2
4x256 kB
8x256 kB
Cache L3
8192 kB
20480 kB
Date
October 2017
September 2016
Mean monothread perf.
68.36k points
49.76k points
Mean multithread perf.
237.63k points
427.51k 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
i3-8350K
i7-6900K
Test#1 (Integers)
27.29k
23.11k (x0.85)
Test#2 (FP)
24.19k
17.84k (x0.74)
Test#3 (Generic, ZIP)
5.75k
5.34k (x0.93)
Test#1 (Memory)
11.13k
3.47k (x0.31)
TOTAL
68.36k
49.76k (x0.73)

Multithread

i3-8350K

i7-6900K
Test#1 (Integers)
107.78k
184.19k (x1.71)
Test#2 (FP)
95.93k
181.2k (x1.89)
Test#3 (Generic, ZIP)
22.65k
47.44k (x2.09)
Test#1 (Memory)
11.26k
14.69k (x1.3)
TOTAL
237.63k
427.51k (x1.8)

Performance/W
i3-8350K
i7-6900K
Test#1 (Integers)
1184 points/W
1316 points/W
Test#2 (FP)
1054 points/W
1294 points/W
Test#3 (Generic, ZIP)
249 points/W
339 points/W
Test#1 (Memory)
124 points/W
105 points/W
TOTAL
2611 points/W
3054 points/W

Performance/GHz
i3-8350K
i7-6900K
Test#1 (Integers)
6823 points/GHz
6247 points/GHz
Test#2 (FP)
6048 points/GHz
4822 points/GHz
Test#3 (Generic, ZIP)
1436 points/GHz
1444 points/GHz
Test#1 (Memory)
2784 points/GHz
938 points/GHz
TOTAL
17091 points/GHz
13450 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