| | | | | | |

Engineering Sample 906EC vs Core i5-8400


Description
Both models 906EC and i5-8400 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 906EC gets a score of 494.2 k points while the i5-8400 gets 289.6 k points.

Summarizing, the 906EC is 1.7 times faster than the i5-8400. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ec
906ea
Core
Coffee Lake-S
Coffee Lake-S
Architecture
Base frecuency
2.1 GHz
2.8 GHz
Boost frecuency
4.3 GHz
4 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
8/16
6/6
TDP
- W
65 W
Cache L1 (d+i)
8x32+8x32 kB
6x32+6x32 kB
Cache L2
8x256 kB
6x256 kB
Cache L3
16384 kB
9216 kB
Date
January 2019
September 2017
Mean monothread perf.
70.55k points
64.98k points
Mean multithread perf.
494.24k points
289.61k 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
906EC
i5-8400
Test#1 (Integers)
28.3k
26.5k (x0.94)
Test#2 (FP)
24.99k
23.11k (x0.92)
Test#3 (Generic, ZIP)
5.55k
5.2k (x0.94)
Test#1 (Memory)
11.71k
10.16k (x0.87)
TOTAL
70.55k
64.98k (x0.92)

Multithread

906EC

i5-8400
Test#1 (Integers)
229.27k
135.08k (x0.59)
Test#2 (FP)
209.21k
121.49k (x0.58)
Test#3 (Generic, ZIP)
48.53k
27.53k (x0.57)
Test#1 (Memory)
7.23k
5.5k (x0.76)
TOTAL
494.24k
289.61k (x0.59)

Performance/W
906EC
i5-8400
Test#1 (Integers)