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Core i3-8100 vs i3-7100


Description
The i3-8100 is based on Coffee Lake architecture while the i3-7100 is based on Kaby Lake.

Using the multithread performance as a reference, the i3-8100 gets a score of 200.4 k points while the i3-7100 gets 126.5 k points.

Summarizing, the i3-8100 is 1.6 times faster than the i3-7100. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906eb
906e9
Core
Coffee Lake-S
Kaby Lake-S
Architecture
Base frecuency
3.6 GHz
3.9 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
4/4
2/4
TDP
65 W
51 W
Cache L1 (d+i)
4x32+4x32 kB
2x32+2x32 kB
Cache L2
4x256 kB
2x256 kB
Cache L3
6144 kB
3072 kB
Date
October 2017
January 2017
Mean monothread perf.
59.18k points
58.55k points
Mean multithread perf.
200.4k points
126.47k 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
i3-8100
i3-7100
Test#1 (Integers)
3.72k
4.01k (x1.08)
Test#2 (FP)
15.33k
16.38k (x1.07)
Test#3 (Generic, ZIP)
4.71k
5.31k (x1.13)
Test#1 (Memory)
6.76k
3.98k (x0.59)
TOTAL
30.52k
29.69k (x0.97)

Multithread

i3-8100

i3-7100
Test#1 (Integers)
14.48k
8.1k (x0.56)
Test#2 (FP)
59.59k
38.7k (x0.65)
Test#3 (Generic, ZIP)
18.07k
12.69k (x0.7)
Test#1 (Memory)
4.3k
3.76k (x0.87)
TOTAL
96.43k
63.24k (x0.66)

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
i3-8100
i3-7100
Test#1 (Integers)
13.51k
14.04k (x1.04)
Test#2 (FP)
19.38k
20.55k (x1.06)
Test#3 (Generic, ZIP)
5.06k
5.41k (x1.07)
Test#1 (Memory)
7.87k
3.99k (x0.51)
TOTAL
45.81k
43.99k (x0.96)

Multithread

i3-8100

i3-7100
Test#1 (Integers)
52.88k
30.09k (x0.57)
Test#2 (FP)
75.92k
47.84k (x0.63)
Test#3 (Generic, ZIP)
19.52k
13.13k (x0.67)
Test#1 (Memory)
4.53k
3.52k (x0.78)
TOTAL
152.86k
94.59k (x0.62)

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
i3-8100
i3-7100
Test#1 (Integers)
13.52k
14.41k (x1.07)
Test#2 (FP)
20.57k
22.38k (x1.09)
Test#3 (Generic, ZIP)
4.96k
5.45k (x1.1)
Test#1 (Memory)
7.91k
4.96k (x0.63)
TOTAL
46.96k
47.21k (x1.01)

Multithread

i3-8100

i3-7100
Test#1 (Integers)
53.4k
30.48k (x0.57)
Test#2 (FP)
80.87k
52.08k (x0.64)
Test#3 (Generic, ZIP)
19.03k
12.97k (x0.68)
Test#1 (Memory)
4.29k
4.56k (x1.06)
TOTAL
157.59k
100.1k (x0.64)

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
i3-8100
i3-7100
Test#1 (Integers)
24.47k
25.77k (x1.05)
Test#2 (FP)
21.52k
23.26k (x1.08)
Test#3 (Generic, ZIP)
4.95k
5.43k (x1.1)
Test#1 (Memory)
8.24k
4.09k (x0.5)
TOTAL
59.18k
58.55k (x0.99)

Multithread

i3-8100

i3-7100
Test#1 (Integers)
92.86k
54.98k (x0.59)
Test#2 (FP)
83.05k
54.73k (x0.66)
Test#3 (Generic, ZIP)
18.55k
13.12k (x0.71)
Test#1 (Memory)
5.93k
3.65k (x0.61)
TOTAL
200.4k
126.47k (x0.63)

Performance/W
i3-8100
i3-7100
Test#1 (Integers)
1429 points/W
1078 points/W
Test#2 (FP)
1278 points/W
1073 points/W
Test#3 (Generic, ZIP)
285 points/W
257 points/W
Test#1 (Memory)
91 points/W
72 points/W
TOTAL
3083 points/W
2480 points/W

Performance/GHz
i3-8100
i3-7100
Test#1 (Integers)
6797 points/GHz
6607 points/GHz
Test#2 (FP)
5977 points/GHz
5964 points/GHz
Test#3 (Generic, ZIP)
1374 points/GHz
1393 points/GHz
Test#1 (Memory)
2290 points/GHz
1049 points/GHz
TOTAL
16438 points/GHz
15014 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