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Core i7-6900K vs i9-9900K


Description
The i7-6900K is based on Broadwell architecture while the i9-9900K is based on Coffee Lake.

Using the multithread performance as a reference, the i7-6900K gets a score of 427.5 k points while the i9-9900K gets 545.3 k points.

Summarizing, the i9-9900K is 1.3 times faster than the i7-6900K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
406f1
906ec
Core
Broadwell-E
Coffee Lake-S
Architecture
Base frecuency
3.2 GHz
3.6 GHz
Boost frecuency
3.7 GHz
5 GHz
Socket
LGA 2011-3
LGA 1151
Cores/Threads
8/16
8/16
TDP
140 W
95 W
Cache L1 (d+i)
8x32+8x32 kB
8x32+8x32 kB
Cache L2
8x256 kB
8x256 kB
Cache L3
20480 kB
16384 kB
Date
September 2016
October 2018
Mean monothread perf.
49.76k points
86.24k points
Mean multithread perf.
427.51k points
545.3k 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
i7-6900K
i9-9900K
Test#1 (Integers)
23.11k
33.62k (x1.45)
Test#2 (FP)
17.84k
30.02k (x1.68)
Test#3 (Generic, ZIP)
5.34k
7.17k (x1.34)
Test#1 (Memory)
3.47k
15.43k (x4.45)
TOTAL
49.76k
86.24k (x1.73)

Multithread

i7-6900K

i9-9900K
Test#1 (Integers)
184.19k
248.93k (x1.35)
Test#2 (FP)
181.2k
224.43k (x1.24)
Test#3 (Generic, ZIP)
47.44k
53.39k (x1.13)
Test#1 (Memory)
14.69k
18.54k (x1.26)
TOTAL
427.51k
545.3k (x1.28)

Performance/W
i7-6900K
i9-9900K
Test#1 (Integers)
1316 points/W
2620 points/W
Test#2 (FP)
1294 points/W
2362 points/W
Test#3 (Generic, ZIP)
339 points/W
562 points/W
Test#1 (Memory)
105 points/W
195 points/W
TOTAL
3054 points/W
5740 points/W

Performance/GHz
i7-6900K
i9-9900K
Test#1 (Integers)
6247 points/GHz
6724 points/GHz
Test#2 (FP)
4822 points/GHz
6003 points/GHz
Test#3 (Generic, ZIP)
1444 points/GHz
1434 points/GHz
Test#1 (Memory)
938 points/GHz
3087 points/GHz
TOTAL
13450 points/GHz
17247 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