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Core i7-8550U vs i7-8700


Description
The i7-8550U is based on Kaby Lake architecture while the i7-8700 is based on Coffee Lake.

Using the multithread performance as a reference, the i7-8550U gets a score of 166.1 k points while the i7-8700 gets 389 k points.

Summarizing, the i7-8700 is 2.3 times faster than the i7-8550U. 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
Architecture
Base frecuency
1.8 GHz
3.2 GHz
Boost frecuency
4 GHz
4.6 GHz
Socket
BGA1356
LGA 1151
Cores/Threads
4/8
6/12
TDP
15 W
65 W
Cache L1 (d+i)
4x32+4x32 kB
6x32+6x32 kB
Cache L2
4x256 kB
6x256 kB
Cache L3
8192 kB
12288 kB
Date
August 2017
October 2017
Mean monothread perf.
64.2k points
75.01k points
Mean multithread perf.
166.12k points
388.95k 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
i7-8550U
i7-8700
Test#1 (Integers)
3.91k
4.48k (x1.15)
Test#2 (FP)
15.98k
18.31k (x1.15)
Test#3 (Generic, ZIP)
5.11k
5.88k (x1.15)
Test#1 (Memory)
11.05k
13.45k (x1.22)
TOTAL
36.05k
42.12k (x1.17)

Multithread

i7-8550U

i7-8700
Test#1 (Integers)
11.76k
27.35k (x2.33)
Test#2 (FP)
50.15k
124.94k (x2.49)
Test#3 (Generic, ZIP)
16.76k
43.23k (x2.58)
Test#1 (Memory)
4.17k
7.08k (x1.7)
TOTAL
82.84k
202.61k (x2.45)

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
i7-8550U
i7-8700
Test#1 (Integers)
12.93k
16.45k (x1.27)
Test#2 (FP)
20.59k
23.74k (x1.15)
Test#3 (Generic, ZIP)
5.41k
6.24k (x1.15)
Test#1 (Memory)
10.48k
13.43k (x1.28)
TOTAL
49.41k
59.86k (x1.21)

Multithread

i7-8550U

i7-8700
Test#1 (Integers)
41.11k
100.94k (x2.46)
Test#2 (FP)
65.04k
159.09k (x2.45)
Test#3 (Generic, ZIP)
17.53k
43.61k (x2.49)
Test#1 (Memory)
4.22k
6.59k (x1.56)
TOTAL
127.9k
310.23k (x2.43)

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
i7-8550U
i7-8700
Test#1 (Integers)
13.15k
16.57k (x1.26)
Test#2 (FP)
19.7k
25.52k (x1.3)
Test#3 (Generic, ZIP)
5.1k
6.01k (x1.18)
Test#1 (Memory)
9.21k
12.82k (x1.39)
TOTAL
47.16k
60.92k (x1.29)

Multithread

i7-8550U

i7-8700
Test#1 (Integers)
34.13k
101.85k (x2.98)
Test#2 (FP)
53.79k
170.31k (x3.17)
Test#3 (Generic, ZIP)
13.91k
43.12k (x3.1)
Test#1 (Memory)
4.12k
7.11k (x1.72)
TOTAL
105.95k
322.39k (x3.04)

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
i7-8550U
i7-8700
Test#1 (Integers)
25.37k
29.25k (x1.15)
Test#2 (FP)
22.6k
25.98k (x1.15)
Test#3 (Generic, ZIP)
5.13k
6.05k (x1.18)
Test#1 (Memory)
11.1k
13.74k (x1.24)
TOTAL
64.2k
75.01k (x1.17)

Multithread

i7-8550U

i7-8700
Test#1 (Integers)
72.82k
182.56k (x2.51)
Test#2 (FP)
71.71k
159.9k (x2.23)
Test#3 (Generic, ZIP)
17.35k
38.18k (x2.2)
Test#1 (Memory)
4.24k
8.31k (x1.96)
TOTAL
166.12k
388.95k (x2.34)

Performance/W
i7-8550U
i7-8700
Test#1 (Integers)
4855 points/W
2809 points/W
Test#2 (FP)
4781 points/W
2460 points/W
Test#3 (Generic, ZIP)
1157 points/W
587 points/W
Test#1 (Memory)
282 points/W
128 points/W
TOTAL
11075 points/W
5984 points/W

Performance/GHz
i7-8550U
i7-8700
Test#1 (Integers)
6343 points/GHz
6358 points/GHz
Test#2 (FP)
5650 points/GHz
5647 points/GHz
Test#3 (Generic, ZIP)
1282 points/GHz
1316 points/GHz
Test#1 (Memory)
2774 points/GHz
2986 points/GHz
TOTAL
16049 points/GHz
16307 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