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Core i7-8086K vs Engineering Sample 906EC


Description
Both models i7-8086K and 906EC 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 i7-8086K gets a score of 352.4 k points while the 906EC gets 494.2 k points.

Summarizing, the 906EC is 1.4 times faster than the i7-8086K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ea
906ec
Core
Coffee Lake-S
Coffee Lake-S
Architecture
Base frecuency
4 GHz
2.1 GHz
Boost frecuency
5 GHz
4.3 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
6/12
8/16
TDP
95 W
- W
Cache L1 (d+i)
6x32+6x32 kB
8x32+8x32 kB
Cache L2
6x256 kB
8x256 kB
Cache L3
12288 kB
16384 kB
Date
June 2018
January 2019
Mean monothread perf.
72.95k points
70.55k points
Mean multithread perf.
352.4k points
494.24k 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
i7-8086K
906EC
Test#1 (Integers)
28.74k
28.3k (x0.98)
Test#2 (FP)
25.31k
24.99k (x0.99)
Test#3 (Generic, ZIP)
5.78k
5.55k (x0.96)
Test#1 (Memory)
13.12k
11.71k (x0.89)
TOTAL
72.95k
70.55k (x0.97)

Multithread

i7-8086K

906EC
Test#1 (Integers)
160.53k
229.27k (x1.43)
Test#2 (FP)
147.29k
209.21k (x1.42)
Test#3 (Generic, ZIP)
35.65k
48.53k (x1.36)
Test#1 (Memory)
8.92k
7.23k (x0.81)
TOTAL
352.4k
494.24k (x1.4)

Performance/W
i7-8086K
906EC
Test#1 (Integers)
1690 points/W