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Core i3-1005G1 vs i5-8400


Description
The i3-1005G1 is based on Ice Lake architecture while the i5-8400 is based on Coffee Lake.

Using the multithread performance as a reference, the i3-1005G1 gets a score of 116.6 k points while the i5-8400 gets 289.6 k points.

Summarizing, the i5-8400 is 2.5 times faster than the i3-1005G1. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
706e5
906ea
Core
Ice Lake-U
Coffee Lake-S
Architecture
Base frecuency
1.2 GHz
2.8 GHz
Boost frecuency
3.4 GHz
4 GHz
Socket
BGA 1526
LGA 1151
Cores/Threads
2/4
6/6
TDP
15 W
65 W
Cache L1 (d+i)
2x32+2x48 kB
6x32+6x32 kB
Cache L2
2x512 kB
6x256 kB
Cache L3
4096 kB
9216 kB
Date
August 2019
September 2017
Mean monothread perf.
50.62k points
64.98k points
Mean multithread perf.
116.63k points
289.61k 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
i3-1005G1
i5-8400
Test#1 (Integers)
3.07k
4.08k (x1.33)
Test#2 (FP)
13.76k
14.96k (x1.09)
Test#3 (Generic, ZIP)
8k
4.98k (x0.62)
Test#1 (Memory)
6.59k
10.29k (x1.56)
TOTAL
31.42k
34.31k (x1.09)

Multithread

i3-1005G1

i5-8400
Test#1 (Integers)
8k
21.54k (x2.69)
Test#2 (FP)
35.53k
85.13k (x2.4)
Test#3 (Generic, ZIP)
18.53k
28.24k (x1.52)
Test#1 (Memory)
4.3k
4.08k (x0.95)
TOTAL
66.36k
139k (x2.09)

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
i3-1005G1
i5-8400
Test#1 (Integers)
19.45k
26.5k (x1.36)
Test#2 (FP)
16.75k
23.11k (x1.38)
Test#3 (Generic, ZIP)
8.04k
5.2k (x0.65)
Test#1 (Memory)
6.38k
10.16k (x1.59)
TOTAL
50.62k
64.98k (x1.28)

Multithread

i3-1005G1

i5-8400
Test#1 (Integers)
46.52k
135.08k (x2.9)
Test#2 (FP)
48.76k
121.49k (x2.49)
Test#3 (Generic, ZIP)
17.12k
27.53k (x1.61)
Test#1 (Memory)
4.23k
5.5k (x1.3)
TOTAL
116.63k
289.61k (x2.48)

Performance/W
i3-1005G1
i5-8400
Test#1 (Integers)
3102 points/W
2078 points/W
Test#2 (FP)
3251 points/W
1869 points/W
Test#3 (Generic, ZIP)
1141 points/W
424 points/W
Test#1 (Memory)
282 points/W
85 points/W
TOTAL
7776 points/W
4455 points/W

Performance/GHz
i3-1005G1
i5-8400
Test#1 (Integers)
5721 points/GHz
6626 points/GHz
Test#2 (FP)
4926 points/GHz
5778 points/GHz
Test#3 (Generic, ZIP)
2365 points/GHz
1300 points/GHz
Test#1 (Memory)
1877 points/GHz
2541 points/GHz
TOTAL
14889 points/GHz
16245 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