Core i7-6700K vs i7-1255U
Description
The i7-6700K is based on Skylake architecture while the i7-1255U 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 i7-1255U gets 258.3 k points.
Summarizing, the i7-1255U is 1 times faster than the i7-6700K . To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i7-6700K gets a score of 254.6 k points while the i7-1255U gets 258.3 k points.
Summarizing, the i7-1255U is 1 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
906a4
Core
Skylake-S
Alder Lake-U
Base frecuency
4 GHz
1.7 GHz
Boost frecuency
4.2 GHz
4.7 GHz
Socket
LGA 1151
BGA 1744
Cores/Threads
4/8
10/12
TDP
95 W
15 W
Cache L1 (d+i)
4x32+4x32 kB
2x32/8x64+2x48/8x32 kB
Cache L2
256 kB
2x1280+2x2048 kB
Cache L3
8192 kB
12288 kB
Date
May 2015
February 2022
Mean monothread perf.
63.22k points
81.73k points
Mean multithread perf.
254.56k points
258.31k 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
i7-6700K
i7-1255U
Test#1 (Integers)
25.78k
38.32k (x1.49)
Test#2 (FP)
23.08k
21.35k (x0.93)
Test#3 (Generic, ZIP)
5.32k
11.2k (x2.1)
Test#1 (Memory)
9.03k
10.86k (x1.2)
TOTAL
63.22k
81.73k (x1.29)
Multithread
i7-6700K
i7-1255U
Test#1 (Integers)
112.83k
105.48k (x0.93)
Test#2 (FP)
106.86k
100.18k (x0.94)
Test#3 (Generic, ZIP)
25.76k
43.39k (x1.68)
Test#1 (Memory)
9.12k
9.26k (x1.02)
TOTAL
254.56k
258.31k (x1.01)
Performance/W
i7-6700K
i7-1255U
Test#1 (Integers)
1188 points/W
7032 points/W
Test#2 (FP)
1125 points/W
6678 points/W
Test#3 (Generic, ZIP)
271 points/W
2893 points/W
Test#1 (Memory)
96 points/W
617 points/W
TOTAL
2680 points/W
17221 points/W
Performance/GHz
i7-6700K
i7-1255U
Test#1 (Integers)
6139 points/GHz
8154 points/GHz
Test#2 (FP)
5495 points/GHz
4543 points/GHz
Test#3 (Generic, ZIP)
1268 points/GHz
2382 points/GHz
Test#1 (Memory)
2150 points/GHz
2311 points/GHz
TOTAL
15052 points/GHz
17390 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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Hardlimit Benchmark Central - Ver. 3.11.4