| | | | | | |

Core i7-8550U vs i7-6900K


Description
The i7-8550U is based on Kaby Lake architecture while the i7-6900K is based on Broadwell.

Using the multithread performance as a reference, the i7-8550U gets a score of 166.1 k points while the i7-6900K gets 427.5 k points.

Summarizing, the i7-6900K is 2.6 times faster than the i7-8550U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806ea
406f1
Core
Kaby Lake-R
Broadwell-E
Architecture
Base frecuency
1.8 GHz
3.2 GHz
Boost frecuency
4 GHz
3.7 GHz
Socket
BGA1356
LGA 2011-3
Cores/Threads
4/8
8/16
TDP
15 W
140 W
Cache L1 (d+i)
4x32+4x32 kB
8x32+8x32 kB
Cache L2
4x256 kB
8x256 kB
Cache L3
8192 kB
20480 kB
Date
August 2017
September 2016
Mean monothread perf.
64.2k points
49.76k points
Mean multithread perf.
166.12k points
427.51k 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
i7-8550U
i7-6900K
Test#1 (Integers)
25.37k
23.11k (x0.91)
Test#2 (FP)
22.6k
17.84k (x0.79)
Test#3 (Generic, ZIP)
5.13k
5.34k (x1.04)
Test#1 (Memory)
11.1k
3.47k (x0.31)
TOTAL
64.2k
49.76k (x0.78)

Multithread

i7-8550U

i7-6900K
Test#1 (Integers)
72.82k
184.19k (x2.53)
Test#2 (FP)
71.71k
181.2k (x2.53)
Test#3 (Generic, ZIP)
17.35k
47.44k (x2.73)
Test#1 (Memory)
4.24k
14.69k (x3.47)
TOTAL
166.12k
427.51k (x2.57)

Performance/W
i7-8550U
i7-6900K
Test#1 (Integers)
4855 points/W
1316 points/W
Test#2 (FP)
4781 points/W
1294 points/W
Test#3 (Generic, ZIP)
1157 points/W
339 points/W
Test#1 (Memory)
282 points/W
105 points/W
TOTAL
11075 points/W
3054 points/W

Performance/GHz
i7-8550U
i7-6900K
Test#1 (Integers)
6343 points/GHz
6247 points/GHz
Test#2 (FP)
5650 points/GHz
4822 points/GHz
Test#3 (Generic, ZIP)
1282 points/GHz
1444 points/GHz
Test#1 (Memory)
2774 points/GHz
938 points/GHz
TOTAL
16049 points/GHz
13450 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.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

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.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Hardlimit Benchmark Central - Ver. 3.11.4