Core i7-8700k vs i5-8250U
Description
The i7-8700k is based on Coffee Lake architecture while the i5-8250U is based on Kaby Lake.
Using the multithread performance as a reference, the i7-8700k gets a score of 443.8 k points while the i5-8250U gets 161.3 k points.
Summarizing, the i7-8700k is 2.8 times faster than the i5-8250U. To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i7-8700k gets a score of 443.8 k points while the i5-8250U gets 161.3 k points.
Summarizing, the i7-8700k is 2.8 times faster than the i5-8250U. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
906ea
806ea
Core
Coffee Lake-S
Kaby Lake-R
Base frecuency
3.7 GHz
1.6 GHz
Boost frecuency
4.7 GHz
3.4 GHz
Socket
LGA 1151
BGA1356
Cores/Threads
6/12
4/8
TDP
95 W
15 W
Cache L1 (d+i)
6x32+6x32 kB
4x32+4x32 kB
Cache L2
6x256 kB
4x256 kB
Cache L3
12288 kB
6144 kB
Date
October 2017
August 2017
Mean monothread perf.
80.6k points
54.31k points
Mean multithread perf.
443.77k points
161.26k 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
i7-8700k
i5-8250U
Test#1 (Integers)
4.13k
3.32k (x0.8)
Test#2 (FP)
16.96k
13.5k (x0.8)
Test#3 (Generic, ZIP)
5.56k
4.11k (x0.74)
Test#1 (Memory)
12.85k
7.42k (x0.58)
TOTAL
39.5k
28.34k (x0.72)
Multithread
i7-8700k
i5-8250U
Test#1 (Integers)
24.01k
13.97k (x0.58)
Test#2 (FP)
108.69k
50.8k (x0.47)
Test#3 (Generic, ZIP)
36.62k
14.71k (x0.4)
Test#1 (Memory)
9.33k
4.76k (x0.51)
TOTAL
178.64k
84.24k (x0.47)
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
i7-8700k
i5-8250U
Test#1 (Integers)
12.92k
12.41k (x0.96)
Test#2 (FP)
20.68k
18.11k (x0.88)
Test#3 (Generic, ZIP)
5.3k
4.79k (x0.9)
Test#1 (Memory)
12.59k
8.16k (x0.65)
TOTAL
51.48k
43.46k (x0.84)
Multithread
i7-8700k
i5-8250U
Test#1 (Integers)
94.26k
42.48k (x0.45)
Test#2 (FP)
152.55k
60.2k (x0.39)
Test#3 (Generic, ZIP)
39.74k
14.85k (x0.37)
Test#1 (Memory)
8.53k
4.77k (x0.56)
TOTAL
295.07k
122.3k (x0.41)
AVX optimized benchmark
The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.
Monothread
i7-8700k
i5-8250U
Test#1 (Integers)
16.87k
12.59k (x0.75)
Test#2 (FP)
26.12k
18.89k (x0.72)
Test#3 (Generic, ZIP)
6.33k
4.65k (x0.73)
Test#1 (Memory)
13.71k
8.2k (x0.6)
TOTAL
63.03k
44.32k (x0.7)
Multithread
i7-8700k
i5-8250U
Test#1 (Integers)
105.74k
45.91k (x0.43)
Test#2 (FP)
180.52k
69.55k (x0.39)
Test#3 (Generic, ZIP)
44.99k
16.79k (x0.37)
Test#1 (Memory)
8.51k
4.83k (x0.57)
TOTAL
339.77k
137.09k (x0.4)
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
i7-8700k
i5-8250U
Test#1 (Integers)
31.2k
22.11k (x0.71)
Test#2 (FP)
27.82k
19.64k (x0.71)
Test#3 (Generic, ZIP)
6.57k
4.54k (x0.69)
Test#1 (Memory)
15k
8.03k (x0.54)
TOTAL
80.6k
54.31k (x0.67)
Multithread
i7-8700k
i5-8250U
Test#1 (Integers)
202.42k
74.19k (x0.37)
Test#2 (FP)
186.33k
66.27k (x0.36)
Test#3 (Generic, ZIP)
44.96k
15.97k (x0.36)
Test#1 (Memory)
10.05k
4.83k (x0.48)
TOTAL
443.77k
161.26k (x0.36)
Performance/W
i7-8700k
i5-8250U
Test#1 (Integers)
2131 points/W
4946 points/W
Test#2 (FP)
1961 points/W
4418 points/W
Test#3 (Generic, ZIP)
473 points/W
1065 points/W
Test#1 (Memory)
106 points/W
322 points/W
TOTAL
4671 points/W
10751 points/W
Performance/GHz
i7-8700k
i5-8250U
Test#1 (Integers)
6639 points/GHz
6503 points/GHz
Test#2 (FP)
5919 points/GHz
5777 points/GHz
Test#3 (Generic, ZIP)
1397 points/GHz
1334 points/GHz
Test#1 (Memory)
3192 points/GHz
2361 points/GHz
TOTAL
17148 points/GHz
15975 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