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Core i5-8500T vs i7-8550U


Description
The i5-8500T is based on Coffee Lake architecture while the i7-8550U is based on Kaby Lake.

Using the multithread performance as a reference, the i5-8500T gets a score of 251.8 k points while the i7-8550U gets 166.1 k points.

Summarizing, the i5-8500T is 1.5 times faster than the i7-8550U. 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
Architecture
Base frecuency
2.1 GHz
1.8 GHz
Boost frecuency
3.5 GHz
4 GHz
Socket
LGA 1151
BGA1356
Cores/Threads
6/6
4/8
TDP
35 W
15 W
Cache L1 (d+i)
6x32+6x32 kB
4x32+4x32 kB
Cache L2
6x256 kB
4x256 kB
Cache L3
9216 kB
8192 kB
Date
March 2018
August 2017
Mean monothread perf.
59.27k points
64.2k points
Mean multithread perf.
251.82k points
166.12k 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
i5-8500T
i7-8550U
Test#1 (Integers)
3.56k
3.91k (x1.1)
Test#2 (FP)
14.76k
15.98k (x1.08)
Test#3 (Generic, ZIP)
4.46k
5.11k (x1.15)
Test#1 (Memory)
8.72k
11.05k (x1.27)
TOTAL
31.5k
36.05k (x1.14)

Multithread

i5-8500T

i7-8550U
Test#1 (Integers)
19.37k
11.76k (x0.61)
Test#2 (FP)
82.35k
50.15k (x0.61)
Test#3 (Generic, ZIP)
24.6k
16.76k (x0.68)
Test#1 (Memory)
2.97k
4.17k (x1.4)
TOTAL
129.29k
82.84k (x0.64)

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
i5-8500T
i7-8550U
Test#1 (Integers)
12.93k
12.93k (x1)
Test#2 (FP)
18.61k
20.59k (x1.11)
Test#3 (Generic, ZIP)
4.76k
5.41k (x1.14)
Test#1 (Memory)
10.05k
10.48k (x1.04)
TOTAL
46.36k
49.41k (x1.07)

Multithread

i5-8500T

i7-8550U
Test#1 (Integers)
71.15k
41.11k (x0.58)
Test#2 (FP)
102.74k
65.04k (x0.63)
Test#3 (Generic, ZIP)
26.6k
17.53k (x0.66)
Test#1 (Memory)
2.9k
4.22k (x1.46)
TOTAL
203.39k
127.9k (x0.63)

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
i5-8500T
i7-8550U
Test#1 (Integers)
12.92k
13.15k (x1.02)
Test#2 (FP)
19.47k
19.7k (x1.01)
Test#3 (Generic, ZIP)
4.62k
5.1k (x1.1)
Test#1 (Memory)
9.6k
9.21k (x0.96)
TOTAL
46.6k
47.16k (x1.01)

Multithread

i5-8500T

i7-8550U
Test#1 (Integers)
71.25k
34.13k (x0.48)
Test#2 (FP)
91.16k
53.79k (x0.59)
Test#3 (Generic, ZIP)
24.45k
13.91k (x0.57)
Test#1 (Memory)
2.85k
4.12k (x1.45)
TOTAL
189.71k
105.95k (x0.56)

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
i5-8500T
i7-8550U
Test#1 (Integers)
23.13k
25.37k (x1.1)
Test#2 (FP)
20.7k
22.6k (x1.09)
Test#3 (Generic, ZIP)
4.71k
5.13k (x1.09)
Test#1 (Memory)
10.73k
11.1k (x1.03)
TOTAL
59.27k
64.2k (x1.08)

Multithread

i5-8500T

i7-8550U
Test#1 (Integers)
125.17k
72.82k (x0.58)
Test#2 (FP)
98.07k
71.71k (x0.73)
Test#3 (Generic, ZIP)
25.57k
17.35k (x0.68)
Test#1 (Memory)
3.01k
4.24k (x1.41)
TOTAL
251.82k
166.12k (x0.66)

Performance/W
i5-8500T
i7-8550U
Test#1 (Integers)
3576 points/W
4855 points/W
Test#2 (FP)
2802 points/W
4781 points/W
Test#3 (Generic, ZIP)
731 points/W
1157 points/W
Test#1 (Memory)
86 points/W
282 points/W
TOTAL
7195 points/W
11075 points/W

Performance/GHz
i5-8500T
i7-8550U
Test#1 (Integers)
6608 points/GHz
6343 points/GHz
Test#2 (FP)
5914 points/GHz
5650 points/GHz
Test#3 (Generic, ZIP)
1346 points/GHz
1282 points/GHz
Test#1 (Memory)
3067 points/GHz
2774 points/GHz
TOTAL
16934 points/GHz
16049 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