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Core i7-6700K vs i9-10900K


Description
The i7-6700K is based on Skylake architecture while the i9-10900K is based on Comet Lake.

Using the multithread performance as a reference, the i7-6700K gets a score of 254.6 k points while the i9-10900K gets 685.6 k points.

Summarizing, the i9-10900K is 2.7 times faster than the i7-6700K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
a0655
Core
Skylake-S
Comet Lake-S
Architecture
Base frecuency
4 GHz
3.7 GHz
Boost frecuency
4.2 GHz
5.2 GHz
Socket
LGA 1151
LGA 1200
Cores/Threads
4/8
10/20
TDP
95 W
125 W
Cache L1 (d+i)
4x32+4x32 kB
10x32+10x32 kB
Cache L2
256 kB
10x256 kB
Cache L3
8192 kB
20480 kB
Date
May 2015
April 2020
Mean monothread perf.
63.22k points
80.41k points
Mean multithread perf.
254.56k points
685.65k points

SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
i7-6700K
i9-10900K
Test#1 (Integers)
14.73k
19.5k (x1.32)
Test#2 (FP)
21.27k
28.01k (x1.32)
Test#3 (Generic, ZIP)
5.52k
7.45k (x1.35)
Test#1 (Memory)
6.32k
15.82k (x2.5)
TOTAL
47.84k
70.79k (x1.48)

Multithread

i7-6700K

i9-10900K
Test#1 (Integers)
61.09k
194.49k (x3.18)
Test#2 (FP)
99.17k
312.59k (x3.15)
Test#3 (Generic, ZIP)
26.57k
89.14k (x3.35)
Test#1 (Memory)
10.26k
12.58k (x1.23)
TOTAL
197.09k
608.81k (x3.09)

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
i7-6700K
i9-10900K
Test#1 (Integers)
25.78k
32.67k (x1.27)
Test#2 (FP)
23.08k
28.49k (x1.23)
Test#3 (Generic, ZIP)
5.32k
6.53k (x1.23)
Test#1 (Memory)
9.03k
12.72k (x1.41)
TOTAL
63.22k
80.41k (x1.27)

Multithread

i7-6700K

i9-10900K
Test#1 (Integers)
112.83k
307.39k (x2.72)
Test#2 (FP)
106.86k
298.47k (x2.79)
Test#3 (Generic, ZIP)
25.76k
72.94k (x2.83)
Test#1 (Memory)
9.12k
6.85k (x0.75)
TOTAL
254.56k
685.65k (x2.69)

Performance/W
i7-6700K
i9-10900K
Test#1 (Integers)
1188 points/W
2459 points/W
Test#2 (FP)
1125 points/W
2388 points/W
Test#3 (Generic, ZIP)
271 points/W
583 points/W
Test#1 (Memory)
96 points/W
55 points/W
TOTAL
2680 points/W
5485 points/W

Performance/GHz
i7-6700K
i9-10900K
Test#1 (Integers)
6139 points/GHz
6282 points/GHz
Test#2 (FP)
5495 points/GHz
5479 points/GHz
Test#3 (Generic, ZIP)
1268 points/GHz
1257 points/GHz
Test#1 (Memory)
2150 points/GHz
2445 points/GHz
TOTAL
15052 points/GHz
15463 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