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Core i7-6700K vs i7-12700H


Description
The i7-6700K is based on Skylake architecture while the i7-12700H is based on Alder Lake.

Using the multithread performance as a reference, the i7-6700K gets a score of 254.6 k points while the i7-12700H gets 643.3 k points.

Summarizing, the i7-12700H 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
506e3
906a3
Core
Skylake-S
Alder Lake-H
Architecture
Base frecuency
4 GHz
4.7 GHz
Boost frecuency
4.2 GHz
4.7 GHz
Socket
LGA 1151
BGA 1744
Cores/Threads
4/8
14/20
TDP
95 W
115 W
Cache L1 (d+i)
4x32+4x32 kB
6x32/8x64+6x48/8x32 kB
Cache L2
256 kB
6x1280+6x2048 kB
Cache L3
8192 kB
24576 kB
Date
May 2015
January 2022
Mean monothread perf.
63.22k points
93.12k points
Mean multithread perf.
254.56k points
643.29k points

Non-optimized benchmark
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
i7-6700K
i7-12700H
Test#1 (Integers)
4.07k
7.95k (x1.95)
Test#2 (FP)
16.62k
19.74k (x1.19)
Test#3 (Generic, ZIP)
5.23k
13.29k (x2.54)
Test#1 (Memory)
6.28k
14.97k (x2.39)
TOTAL
32.2k
55.95k (x1.74)

Multithread

i7-6700K

i7-12700H
Test#1 (Integers)
16.37k
53.64k (x3.28)
Test#2 (FP)
77.34k
171.15k (x2.21)
Test#3 (Generic, ZIP)
25.65k
94.92k (x3.7)
Test#1 (Memory)
10.21k
9.24k (x0.91)
TOTAL
129.57k
328.95k (x2.54)

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
i7-12700H
Test#1 (Integers)
14.73k
24.26k (x1.65)
Test#2 (FP)
21.27k
24.03k (x1.13)
Test#3 (Generic, ZIP)
5.52k
14.75k (x2.67)
Test#1 (Memory)
6.32k
12.08k (x1.91)
TOTAL
47.84k
75.12k (x1.57)

Multithread

i7-6700K

i7-12700H
Test#1 (Integers)
61.09k
199.99k (x3.27)
Test#2 (FP)
99.17k
218.01k (x2.2)
Test#3 (Generic, ZIP)
26.57k
102.62k (x3.86)
Test#1 (Memory)
10.26k
9.42k (x0.92)
TOTAL
197.09k
530.04k (x2.69)

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
i7-12700H
Test#1 (Integers)
25.78k
41.64k (x1.62)
Test#2 (FP)
23.08k
25.48k (x1.1)
Test#3 (Generic, ZIP)
5.32k
13.2k (x2.48)
Test#1 (Memory)
9.03k
12.8k (x1.42)
TOTAL
63.22k
93.12k (x1.47)

Multithread

i7-6700K

i7-12700H
Test#1 (Integers)
112.83k
276.56k (x2.45)
Test#2 (FP)
106.86k
251.6k (x2.35)
Test#3 (Generic, ZIP)
25.76k
104.55k (x4.06)
Test#1 (Memory)
9.12k
10.58k (x1.16)
TOTAL
254.56k
643.29k (x2.53)

Performance/W
i7-6700K
i7-12700H
Test#1 (Integers)
1188 points/W
2405 points/W
Test#2 (FP)
1125 points/W
2188 points/W
Test#3 (Generic, ZIP)
271 points/W
909 points/W
Test#1 (Memory)
96 points/W
92 points/W
TOTAL
2680 points/W
5594 points/W

Performance/GHz
i7-6700K
i7-12700H
Test#1 (Integers)
6139 points/GHz
8859 points/GHz
Test#2 (FP)
5495 points/GHz
5422 points/GHz
Test#3 (Generic, ZIP)
1268 points/GHz
2808 points/GHz
Test#1 (Memory)
2150 points/GHz
2724 points/GHz
TOTAL
15052 points/GHz
19813 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