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Core i3-7100 vs i3-8100


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

Using the multithread performance as a reference, the i3-7100 gets a score of 124.8 k points while the i3-8100 gets 200.4 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
906e9
906eb
Core
Kaby Lake-S
Coffee Lake-S
Architecture
Base frecuency
3.9 GHz
3.6 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
2/4
4/4
TDP
51 W
65 W
Cache L1 (d+i)
2x32+2x32 kB
4x32+4x32 kB
Cache L2
2x256 kB
4x256 kB
Cache L3
3072 kB
6144 kB
Date
January 2017
October 2017
Mean monothread perf.
57.86k points
59.18k points
Mean multithread perf.
124.8k points
200.4k 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
i3-7100
i3-8100
Test#1 (Integers)
4.01k
3.72k (x0.93)
Test#2 (FP)
16.38k
15.33k (x0.94)
Test#3 (Generic, ZIP)
5.31k
4.71k (x0.89)
Test#1 (Memory)
3.98k
6.76k (x1.7)
TOTAL
29.69k
30.52k (x1.03)

Multithread

i3-7100

i3-8100
Test#1 (Integers)
8.1k
14.48k (x1.79)
Test#2 (FP)
38.7k
59.59k (x1.54)
Test#3 (Generic, ZIP)
12.69k
18.07k (x1.42)
Test#1 (Memory)
3.76k
4.3k (x1.14)
TOTAL
63.24k
96.43k (x1.52)

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
i3-7100
i3-8100
Test#1 (Integers)
14.04k
13.51k (x0.96)
Test#2 (FP)
20.55k
19.38k (x0.94)
Test#3 (Generic, ZIP)
5.41k
5.06k (x0.94)
Test#1 (Memory)
3.99k
7.87k (x1.97)
TOTAL
43.99k
45.81k (x1.04)

Multithread

i3-7100

i3-8100
Test#1 (Integers)
30.09k
52.88k (x1.76)
Test#2 (FP)
47.84k
75.92k (x1.59)
Test#3 (Generic, ZIP)
13.13k
19.52k (x1.49)
Test#1 (Memory)
3.52k
4.53k (x1.29)
TOTAL
94.59k
152.86k (x1.62)

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
i3-7100
i3-8100
Test#1 (Integers)
14.41k
13.52k (x0.94)
Test#2 (FP)
22.38k
20.57k (x0.92)
Test#3 (Generic, ZIP)
5.45k
4.96k (x0.91)
Test#1 (Memory)
4.96k
7.91k (x1.59)
TOTAL
47.21k
46.96k (x0.99)

Multithread

i3-7100

i3-8100
Test#1 (Integers)
30.48k
53.4k (x1.75)
Test#2 (FP)
52.08k
80.87k (x1.55)
Test#3 (Generic, ZIP)
12.97k
19.03k (x1.47)
Test#1 (Memory)
4.56k
4.29k (x0.94)
TOTAL
100.1k
157.59k (x1.57)

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
i3-7100
i3-8100
Test#1 (Integers)
25.53k
24.47k (x0.96)
Test#2 (FP)
22.98k
21.52k (x0.94)
Test#3 (Generic, ZIP)
5.37k
4.95k (x0.92)
Test#1 (Memory)
3.97k
8.24k (x2.07)
TOTAL
57.86k
59.18k (x1.02)

Multithread

i3-7100

i3-8100
Test#1 (Integers)
54.73k
92.86k (x1.7)
Test#2 (FP)
53.55k
83.05k (x1.55)
Test#3 (Generic, ZIP)
12.93k
18.55k (x1.43)
Test#1 (Memory)
3.6k
5.93k (x1.65)
TOTAL
124.8k
200.4k (x1.61)

Performance/W
i3-7100
i3-8100
Test#1 (Integers)
1073 points/W
1429 points/W
Test#2 (FP)
1050 points/W
1278 points/W
Test#3 (Generic, ZIP)
254 points/W
285 points/W
Test#1 (Memory)
71 points/W
91 points/W
TOTAL
2447 points/W
3083 points/W

Performance/GHz
i3-7100
i3-8100
Test#1 (Integers)
6547 points/GHz
6797 points/GHz
Test#2 (FP)
5893 points/GHz
5977 points/GHz
Test#3 (Generic, ZIP)
1377 points/GHz
1374 points/GHz
Test#1 (Memory)
1019 points/GHz
2290 points/GHz
TOTAL
14836 points/GHz
16438 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