Core i7-9700K vs i7-1255U
Description
The i7-9700K is based on Coffee Lake architecture while the i7-1255U is based on Alder Lake.
Using the multithread performance as a reference, the i7-9700K gets a score of 460 k points while the i7-1255U gets 258.3 k points.
Summarizing, the i7-9700K is 1.8 times faster than the i7-1255U. To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i7-9700K gets a score of 460 k points while the i7-1255U gets 258.3 k points.
Summarizing, the i7-9700K is 1.8 times faster than the i7-1255U. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
906ec
906a4
Core
Coffee Lake-S
Alder Lake-U
Base frecuency
3.6 GHz
1.7 GHz
Boost frecuency
4.9 GHz
4.7 GHz
Socket
LGA 1151
BGA 1744
Cores/Threads
8/8
10/12
TDP
95 W
15 W
Cache L1 (d+i)
8x32+8x32 kB
2x32/8x64+2x48/8x32 kB
Cache L2
8x256 kB
2x1280+2x2048 kB
Cache L3
12288 kB
12288 kB
Date
October 2018
February 2022
Mean monothread perf.
73.62k points
81.73k points
Mean multithread perf.
460.02k 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
i7-9700K
i7-1255U
Test#1 (Integers)
29.3k
38.32k (x1.31)
Test#2 (FP)
25.61k
21.35k (x0.83)
Test#3 (Generic, ZIP)
5.86k
11.2k (x1.91)
Test#1 (Memory)
12.86k
10.86k (x0.84)
TOTAL
73.62k
81.73k (x1.11)
Multithread
i7-9700K
i7-1255U
Test#1 (Integers)
217.77k
105.48k (x0.48)
Test#2 (FP)
190.46k
100.18k (x0.53)
Test#3 (Generic, ZIP)
40.48k
43.39k (x1.07)
Test#1 (Memory)
11.31k
9.26k (x0.82)
TOTAL
460.02k
258.31k (x0.56)
Performance/W
i7-9700K
i7-1255U
Test#1 (Integers)
2292 points/W
7032 points/W
Test#2 (FP)
2005 points/W
6678 points/W
Test#3 (Generic, ZIP)
426 points/W
2893 points/W
Test#1 (Memory)
119 points/W
617 points/W
TOTAL
4842 points/W
17221 points/W
Performance/GHz
i7-9700K
i7-1255U
Test#1 (Integers)
5981 points/GHz
8154 points/GHz
Test#2 (FP)
5226 points/GHz
4543 points/GHz
Test#3 (Generic, ZIP)
1195 points/GHz
2382 points/GHz
Test#1 (Memory)
2624 points/GHz
2311 points/GHz
TOTAL
15025 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