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Core i9-9900K vs Engineering Sample 906EC


Description
Both models i9-9900K 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 i9-9900K gets a score of 545.3 k points while the 906EC gets 494.2 k points.

Summarizing, the i9-9900K is 1.1 times faster than the 906EC. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ec
906ec
Core
Coffee Lake-S
Coffee Lake-S
Architecture
Base frecuency
3.6 GHz
2.1 GHz
Boost frecuency
5 GHz
4.3 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
8/16
8/16
TDP
95 W
- W
Cache L1 (d+i)
8x32+8x32 kB
8x32+8x32 kB
Cache L2
8x256 kB
8x256 kB
Cache L3
16384 kB
16384 kB
Date
October 2018
January 2019
Mean monothread perf.
86.24k points
70.55k points
Mean multithread perf.
545.3k 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
i9-9900K
906EC
Test#1 (Integers)
33.62k
28.3k (x0.84)
Test#2 (FP)
30.02k
24.99k (x0.83)
Test#3 (Generic, ZIP)
7.17k
5.55k (x0.77)
Test#1 (Memory)
15.43k
11.71k (x0.76)
TOTAL
86.24k
70.55k (x0.82)

Multithread

i9-9900K

906EC
Test#1 (Integers)
248.93k
229.27k (x0.92)
Test#2 (FP)
224.43k
209.21k (x0.93)
Test#3 (Generic, ZIP)
53.39k
48.53k (x0.91)
Test#1 (Memory)
18.54k
7.23k (x0.39)
TOTAL
545.3k
494.24k (x0.91)

Performance/W
i9-9900K
906EC
Test#1 (Integers)
2620 points/W