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Core i9-10900X vs i7-6700K


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

Using the multithread performance as a reference, the i9-10900X gets a score of 632.4 k points while the i7-6700K gets 254.6 k points.

Summarizing, the i9-10900X is 2.5 times faster than the i7-6700K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
50657
506e3
Core
Cascade Lake-X
Skylake-S
Architecture
Base frecuency
3.7 GHz
4 GHz
Boost frecuency
4.7 GHz
4.2 GHz
Socket
LGA 2066
LGA 1151
Cores/Threads
10/20
4/8
TDP
165 W
95 W
Cache L1 (d+i)
10x32+10x32 kB
4x32+4x32 kB
Cache L2
10x1024 kB
256 kB
Cache L3
19712 kB
8192 kB
Date
November 2019
May 2015
Mean monothread perf.
62.28k points
63.22k points
Mean multithread perf.
632.35k points
254.56k 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
i9-10900X
i7-6700K
Test#1 (Integers)
25.97k
25.78k (x0.99)
Test#2 (FP)
22.37k
23.08k (x1.03)
Test#3 (Generic, ZIP)
5.3k
5.32k (x1)
Test#1 (Memory)
8.63k
9.03k (x1.05)
TOTAL
62.28k
63.22k (x1.02)

Multithread

i9-10900X

i7-6700K
Test#1 (Integers)
281.98k
112.83k (x0.4)
Test#2 (FP)
259.01k
106.86k (x0.41)
Test#3 (Generic, ZIP)
64.87k
25.76k (x0.4)
Test#1 (Memory)
26.5k
9.12k (x0.34)
TOTAL
632.35k
254.56k (x0.4)

Performance/W
i9-10900X
i7-6700K
Test#1 (Integers)
1709 points/W
1188 points/W
Test#2 (FP)
1570 points/W
1125 points/W
Test#3 (Generic, ZIP)
393 points/W
271 points/W
Test#1 (Memory)
161 points/W
96 points/W
TOTAL
3832 points/W
2680 points/W

Performance/GHz
i9-10900X
i7-6700K
Test#1 (Integers)
5526 points/GHz
6139 points/GHz
Test#2 (FP)
4760 points/GHz
5495 points/GHz
Test#3 (Generic, ZIP)
1128 points/GHz
1268 points/GHz
Test#1 (Memory)
1835 points/GHz
2150 points/GHz
TOTAL
13250 points/GHz
15052 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