Core i5-8400 vs i3-8350K
Description
Both models i5-8400 and i3-8350K are based on Coffee Lake architecture.
Coffee Lake is the second refinement of Intel’s 14nm (Tri-Gate) technology. While it uses LGA1151 socket, it is incompatible with previous generations due to electrical changes in socket’s pins so these CPUs require Z370 chipset. This kind of generation introduced more cores in every range to compete with new AMD’s architecture. Coffee Lake uses DDR4 memory at 2400MHz for i3 and at 2666MHz for i5, i7 CPUs plus iGPU frequency has been increased 50MHz with respect to previous generation.
Using the multithread performance as a reference, the i5-8400 gets a score of 289.6 k points while the i3-8350K gets 237.6 k points.
Summarizing, the i5-8400 is 1.2 times faster than the i3-8350K. To get a proper comparison between both models, take a look to the data shown below.
Coffee Lake is the second refinement of Intel’s 14nm (Tri-Gate) technology. While it uses LGA1151 socket, it is incompatible with previous generations due to electrical changes in socket’s pins so these CPUs require Z370 chipset. This kind of generation introduced more cores in every range to compete with new AMD’s architecture. Coffee Lake uses DDR4 memory at 2400MHz for i3 and at 2666MHz for i5, i7 CPUs plus iGPU frequency has been increased 50MHz with respect to previous generation.
Using the multithread performance as a reference, the i5-8400 gets a score of 289.6 k points while the i3-8350K gets 237.6 k points.
Summarizing, the i5-8400 is 1.2 times faster than the i3-8350K. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
906ea
906eb
Core
Coffee Lake-S
Coffee Lake-S
Base frecuency
2.8 GHz
4 GHz
Boost frecuency
4 GHz
4 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
6/6
4/4
TDP
65 W
91 W
Cache L1 (d+i)
6x32+6x32 kB
4x32+4x32 kB
Cache L2
6x256 kB
4x256 kB
Cache L3
9216 kB
8192 kB
Date
September 2017
October 2017
Mean monothread perf.
64.98k points
68.36k points
Mean multithread perf.
289.61k points
237.63k points
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
i5-8400
i3-8350K
Test#1 (Integers)
26.5k
27.29k (x1.03)
Test#2 (FP)
23.11k
24.19k (x1.05)
Test#3 (Generic, ZIP)
5.2k
5.75k (x1.1)
Test#1 (Memory)
10.16k
11.13k (x1.1)
TOTAL
64.98k
68.36k (x1.05)
Multithread
i5-8400
i3-8350K
Test#1 (Integers)
135.08k
107.78k (x0.8)
Test#2 (FP)
121.49k
95.93k (x0.79)
Test#3 (Generic, ZIP)
27.53k
22.65k (x0.82)
Test#1 (Memory)
5.5k
11.26k (x2.05)
TOTAL
289.61k
237.63k (x0.82)
Performance/W
i5-8400
i3-8350K
Test#1 (Integers)
2078 points/W
1184 points/W
Test#2 (FP)
1869 points/W
1054 points/W
Test#3 (Generic, ZIP)
424 points/W
249 points/W
Test#1 (Memory)
85 points/W
124 points/W
TOTAL
4455 points/W
2611 points/W
Performance/GHz
i5-8400
i3-8350K
Test#1 (Integers)
6626 points/GHz
6823 points/GHz
Test#2 (FP)
5778 points/GHz
6048 points/GHz
Test#3 (Generic, ZIP)
1300 points/GHz
1436 points/GHz
Test#1 (Memory)
2541 points/GHz
2784 points/GHz
TOTAL
16245 points/GHz
17091 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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Hardlimit Benchmark Central - Ver. 3.11.4