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Core i5-8265U vs i7-6900K


Description
The i5-8265U is based on Whiskey Lake architecture while the i7-6900K is based on Broadwell.

Using the multithread performance as a reference, the i5-8265U gets a score of 143.2 k points while the i7-6900K gets 427.5 k points.

Summarizing, the i7-6900K is 3 times faster than the i5-8265U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806ec
406f1
Core
Whiskey Lake-U
Broadwell-E
Architecture
Base frecuency
1.6 GHz
3.2 GHz
Boost frecuency
3.9 GHz
3.7 GHz
Socket
BGA1528
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
6144 kB
20480 kB
Date
August 2018
September 2016
Mean monothread perf.
46.67k points
49.76k points
Mean multithread perf.
143.23k 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
i5-8265U
i7-6900K
Test#1 (Integers)
19.19k
23.11k (x1.2)
Test#2 (FP)
17.47k
17.84k (x1.02)
Test#3 (Generic, ZIP)
4.04k
5.34k (x1.32)
Test#1 (Memory)
5.97k
3.47k (x0.58)
TOTAL
46.67k
49.76k (x1.07)

Multithread

i5-8265U

i7-6900K
Test#1 (Integers)
64.43k
184.19k (x2.86)
Test#2 (FP)
61.91k
181.2k (x2.93)
Test#3 (Generic, ZIP)
13.36k
47.44k (x3.55)
Test#1 (Memory)
3.52k
14.69k (x4.17)
TOTAL
143.23k
427.51k (x2.98)

Performance/W
i5-8265U
i7-6900K
Test#1 (Integers)
4296 points/W
1316 points/W
Test#2 (FP)
4128 points/W
1294 points/W
Test#3 (Generic, ZIP)
890 points/W
339 points/W
Test#1 (Memory)
235 points/W
105 points/W
TOTAL
9548 points/W
3054 points/W

Performance/GHz
i5-8265U
i7-6900K
Test#1 (Integers)
4920 points/GHz
6247 points/GHz
Test#2 (FP)
4478 points/GHz
4822 points/GHz
Test#3 (Generic, ZIP)
1037 points/GHz
1444 points/GHz
Test#1 (Memory)
1531 points/GHz
938 points/GHz
TOTAL
11966 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