Core i5-8400H vs i5-8259U
Description
Both models i5-8400H and i5-8259U 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 i5-8400H gets a score of 195.9 k points while the i5-8259U gets 229 k points.
Summarizing, the i5-8259U is 1.2 times faster than the i5-8400H. 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 i5-8400H gets a score of 195.9 k points while the i5-8259U gets 229 k points.
Summarizing, the i5-8259U is 1.2 times faster than the i5-8400H. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
906ea
806ea
Core
Coffee Lake-H
Coffee Lake-U
Base frecuency
2.5 GHz
2.3 GHz
Boost frecuency
4.2 GHz
3.8 GHz
Socket
BGA 1440
BGA 1528
Cores/Threads
4/8
4/8
TDP
45 W
28 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+x4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
8192 kB
6144 kB
Date
April 2018
March 2018
Mean monothread perf.
67.06k points
54.55k points
Mean multithread perf.
195.94k points
229k 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
i5-8400H
i5-8259U
Test#1 (Integers)
26.51k
21.06k (x0.79)
Test#2 (FP)
23.61k
19.79k (x0.84)
Test#3 (Generic, ZIP)
5.17k
4.72k (x0.91)
Test#1 (Memory)
11.76k
8.98k (x0.76)
TOTAL
67.06k
54.55k (x0.81)
Multithread
i5-8400H
i5-8259U
Test#1 (Integers)
85.52k
96.43k (x1.13)
Test#2 (FP)
84.4k
85.46k (x1.01)
Test#3 (Generic, ZIP)
19.19k
22.31k (x1.16)
Test#1 (Memory)
6.83k
24.81k (x3.63)
TOTAL
195.94k
229k (x1.17)
Performance/W
i5-8400H
i5-8259U
Test#1 (Integers)
1901 points/W
3444 points/W
Test#2 (FP)
1875 points/W
3052 points/W
Test#3 (Generic, ZIP)
426 points/W
797 points/W
Test#1 (Memory)
152 points/W
886 points/W
TOTAL
4354 points/W
8179 points/W
Performance/GHz
i5-8400H
i5-8259U
Test#1 (Integers)
6313 points/GHz
5543 points/GHz
Test#2 (FP)
5622 points/GHz
5208 points/GHz
Test#3 (Generic, ZIP)
1232 points/GHz
1241 points/GHz
Test#1 (Memory)
2800 points/GHz
2363 points/GHz
TOTAL
15967 points/GHz
14355 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