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Core i7-6900K vs Engineering Sample 906EC


Description
The i7-6900K is based on Broadwell architecture while the 906EC is based on Coffee Lake.

Using the multithread performance as a reference, the i7-6900K gets a score of 427.5 k points while the 906EC gets 494.2 k points.

Summarizing, the 906EC is 1.2 times faster than the i7-6900K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
406f1
906ec
Core
Broadwell-E
Coffee Lake-S
Architecture
Base frecuency
3.2 GHz
2.1 GHz
Boost frecuency
3.7 GHz
4.3 GHz
Socket
LGA 2011-3
LGA 1151
Cores/Threads
8/16
8/16
TDP
140 W
- W
Cache L1 (d+i)
8x32+8x32 kB
8x32+8x32 kB
Cache L2
8x256 kB
8x256 kB
Cache L3
20480 kB
16384 kB
Date
September 2016
January 2019
Mean monothread perf.
49.76k points
70.55k points
Mean multithread perf.
427.51k 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
i7-6900K
906EC
Test#1 (Integers)
23.11k
28.3k (x1.22)
Test#2 (FP)
17.84k
24.99k (x1.4)
Test#3 (Generic, ZIP)
5.34k
5.55k (x1.04)
Test#1 (Memory)
3.47k
11.71k (x3.38)
TOTAL
49.76k
70.55k (x1.42)

Multithread

i7-6900K

906EC
Test#1 (Integers)
184.19k
229.27k (x1.24)
Test#2 (FP)
181.2k
209.21k (x1.15)
Test#3 (Generic, ZIP)
47.44k
48.53k (x1.02)
Test#1 (Memory)
14.69k
7.23k (x0.49)
TOTAL
427.51k
494.24k (x1.16)

Performance/W
i7-6900K
906EC
Test#1 (Integers)
1316 points/W