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Core i7-6700K vs i3-1215U


Description
The i7-6700K is based on Skylake architecture while the i3-1215U 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 i3-1215U gets 185.6 k points.

Summarizing, the i7-6700K is 1.4 times faster than the i3-1215U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
906a4
Core
Skylake-S
Alder Lake-H
Architecture
Base frecuency
4 GHz
0.9 GHz
Boost frecuency
4.2 GHz
4.4 GHz
Socket
LGA 1151
BGA 1744
Cores/Threads
4/8
6/8
TDP
95 W
15 W
Cache L1 (d+i)
4x32+4x32 kB
2x32/4x64+2x48/4x32 kB
Cache L2
256 kB
2x1280+2x2048 kB
Cache L3
8192 kB
10240 kB
Date
May 2015
April 2022
Mean monothread perf.
63.22k points
80.34k points
Mean multithread perf.
254.56k points
185.6k 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
i3-1215U
Test#1 (Integers)
4.07k
6.95k (x1.71)
Test#2 (FP)
16.62k
16.28k (x0.98)
Test#3 (Generic, ZIP)
5.23k
10.49k (x2.01)
Test#1 (Memory)
6.28k
9.95k (x1.58)
TOTAL
32.2k
43.67k (x1.36)

Multithread

i7-6700K

i3-1215U
Test#1 (Integers)
16.37k
14.97k (x0.91)
Test#2 (FP)
77.34k
51.01k (x0.66)
Test#3 (Generic, ZIP)
25.65k
30.47k (x1.19)
Test#1 (Memory)
10.21k
8.59k (x0.84)
TOTAL
129.57k
105.05k (x0.81)

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
i3-1215U
Test#1 (Integers)
14.73k
20.87k (x1.42)
Test#2 (FP)
21.27k
20.74k (x0.98)
Test#3 (Generic, ZIP)
5.52k
11.32k (x2.05)
Test#1 (Memory)
6.32k
8.32k (x1.32)
TOTAL
47.84k
61.26k (x1.28)

Multithread

i7-6700K

i3-1215U
Test#1 (Integers)
61.09k
45.12k (x0.74)
Test#2 (FP)
99.17k
60.59k (x0.61)
Test#3 (Generic, ZIP)
26.57k
28.48k (x1.07)
Test#1 (Memory)
10.26k
14.06k (x1.37)
TOTAL
197.09k
148.26k (x0.75)

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
i3-1215U
Test#1 (Integers)
25.78k
37.56k (x1.46)
Test#2 (FP)
23.08k
21.13k (x0.92)
Test#3 (Generic, ZIP)
5.32k
11.35k (x2.13)
Test#1 (Memory)
9.03k
10.31k (x1.14)
TOTAL
63.22k
80.34k (x1.27)

Multithread

i7-6700K

i3-1215U
Test#1 (Integers)
112.83k
73.97k (x0.66)
Test#2 (FP)
106.86k
72.37k (x0.68)
Test#3 (Generic, ZIP)
25.76k
29.61k (x1.15)
Test#1 (Memory)
9.12k
9.65k (x1.06)
TOTAL
254.56k
185.6k (x0.73)

Performance/W
i7-6700K
i3-1215U
Test#1 (Integers)
1188 points/W
4931 points/W
Test#2 (FP)
1125 points/W
4825 points/W
Test#3 (Generic, ZIP)
271 points/W
1974 points/W
Test#1 (Memory)
96 points/W
643 points/W
TOTAL
2680 points/W
12374 points/W

Performance/GHz
i7-6700K
i3-1215U
Test#1 (Integers)
6139 points/GHz
8535 points/GHz
Test#2 (FP)
5495 points/GHz
4802 points/GHz
Test#3 (Generic, ZIP)
1268 points/GHz
2579 points/GHz
Test#1 (Memory)
2150 points/GHz
2343 points/GHz
TOTAL
15052 points/GHz
18258 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