Core i5-8250U vs i7-8700k
Description
The i5-8250U is based on Kaby Lake architecture while the i7-8700k is based on Coffee Lake.
Using the multithread performance as a reference, the i5-8250U gets a score of 161.3 k points while the i7-8700k gets 443.8 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 i5-8250U gets a score of 161.3 k points while the i7-8700k gets 443.8 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
806ea
906ea
Core
Kaby Lake-R
Coffee Lake-S
Base frecuency
1.6 GHz
3.7 GHz
Boost frecuency
3.4 GHz
4.7 GHz
Socket
BGA1356
LGA 1151
Cores/Threads
4/8
6/12
TDP
15 W
95 W
Cache L1 (d+i)
4x32+4x32 kB
6x32+6x32 kB
Cache L2
4x256 kB
6x256 kB
Cache L3
6144 kB
12288 kB
Date
August 2017
October 2017
Mean monothread perf.
54.31k points
80.6k points
Mean multithread perf.
161.26k points
443.77k 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
i5-8250U
i7-8700k
Test#1 (Integers)
3.32k
4.13k (x1.24)
Test#2 (FP)
13.5k
16.96k (x1.26)
Test#3 (Generic, ZIP)
4.11k
5.56k (x1.36)
Test#1 (Memory)
7.42k
12.85k (x1.73)
TOTAL
28.34k
39.5k (x1.39)
Multithread
i5-8250U
i7-8700k
Test#1 (Integers)
13.97k
24.01k (x1.72)
Test#2 (FP)
50.8k
108.69k (x2.14)
Test#3 (Generic, ZIP)
14.71k
36.62k (x2.49)
Test#1 (Memory)
4.76k
9.33k (x1.96)
TOTAL
84.24k
178.64k (x2.12)
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
i5-8250U
i7-8700k
Test#1 (Integers)
12.41k
12.92k (x1.04)
Test#2 (FP)
18.11k
20.68k (x1.14)
Test#3 (Generic, ZIP)
4.79k
5.3k (x1.11)
Test#1 (Memory)
8.16k
12.59k (x1.54)
TOTAL
43.46k
51.48k (x1.18)
Multithread
i5-8250U
i7-8700k
Test#1 (Integers)
42.48k
94.26k (x2.22)
Test#2 (FP)
60.2k
152.55k (x2.53)
Test#3 (Generic, ZIP)
14.85k
39.74k (x2.68)
Test#1 (Memory)
4.77k
8.53k (x1.79)
TOTAL
122.3k
295.07k (x2.41)
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
i5-8250U
i7-8700k
Test#1 (Integers)
12.59k
16.87k (x1.34)
Test#2 (FP)
18.89k
26.12k (x1.38)
Test#3 (Generic, ZIP)
4.65k
6.33k (x1.36)
Test#1 (Memory)
8.2k
13.71k (x1.67)
TOTAL
44.32k
63.03k (x1.42)
Multithread
i5-8250U
i7-8700k
Test#1 (Integers)
45.91k
105.74k (x2.3)
Test#2 (FP)
69.55k
180.52k (x2.6)
Test#3 (Generic, ZIP)
16.79k
44.99k (x2.68)
Test#1 (Memory)
4.83k
8.51k (x1.76)
TOTAL
137.09k
339.77k (x2.48)
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
i5-8250U
i7-8700k
Test#1 (Integers)
22.11k
31.2k (x1.41)
Test#2 (FP)
19.64k
27.82k (x1.42)
Test#3 (Generic, ZIP)
4.54k
6.57k (x1.45)
Test#1 (Memory)
8.03k
15k (x1.87)
TOTAL
54.31k
80.6k (x1.48)
Multithread
i5-8250U
i7-8700k
Test#1 (Integers)
74.19k
202.42k (x2.73)
Test#2 (FP)
66.27k
186.33k (x2.81)
Test#3 (Generic, ZIP)
15.97k
44.96k (x2.82)
Test#1 (Memory)
4.83k
10.05k (x2.08)
TOTAL
161.26k
443.77k (x2.75)
Performance/W
i5-8250U
i7-8700k
Test#1 (Integers)
4946 points/W
2131 points/W
Test#2 (FP)
4418 points/W
1961 points/W
Test#3 (Generic, ZIP)
1065 points/W
473 points/W
Test#1 (Memory)
322 points/W
106 points/W
TOTAL
10751 points/W
4671 points/W
Performance/GHz
i5-8250U
i7-8700k
Test#1 (Integers)
6503 points/GHz
6639 points/GHz
Test#2 (FP)
5777 points/GHz
5919 points/GHz
Test#3 (Generic, ZIP)
1334 points/GHz
1397 points/GHz
Test#1 (Memory)
2361 points/GHz
3192 points/GHz
TOTAL
15975 points/GHz
17148 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