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Core i7-6500U vs i7-6900K


Description
The i7-6500U is based on Skylake architecture while the i7-6900K is based on Broadwell.

Using the multithread performance as a reference, the i7-6500U gets a score of 97.5 k points while the i7-6900K gets 427.5 k points.

Summarizing, the i7-6900K is 4.4 times faster than the i7-6500U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
406e3
406f1
Core
Skylake-U
Broadwell-E
Architecture
Base frecuency
2.5 GHz
3.2 GHz
Boost frecuency
3.1 GHz
3.7 GHz
Socket
BGA1356
LGA 2011-3
Cores/Threads
2/4
8/16
TDP
15 W
140 W
Cache L1 (d+i)
2x32+2x32 kB
8x32+8x32 kB
Cache L2
4096 kB
8x256 kB
Cache L3
kB
20480 kB
Date
September 2015
September 2016
Mean monothread perf.
46.25k points
49.76k points
Mean multithread perf.
97.52k 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
i7-6500U
i7-6900K
Test#1 (Integers)
19.47k
23.11k (x1.19)
Test#2 (FP)
17.58k
17.84k (x1.01)
Test#3 (Generic, ZIP)
4.05k
5.34k (x1.32)
Test#1 (Memory)
5.15k
3.47k (x0.67)
TOTAL
46.25k
49.76k (x1.08)

Multithread

i7-6500U

i7-6900K
Test#1 (Integers)
42.05k
184.19k (x4.38)
Test#2 (FP)
40.2k
181.2k (x4.51)
Test#3 (Generic, ZIP)
9.4k
47.44k (x5.05)
Test#1 (Memory)
5.86k
14.69k (x2.5)
TOTAL
97.52k
427.51k (x4.38)

Performance/W
i7-6500U
i7-6900K
Test#1 (Integers)
2803 points/W
1316 points/W
Test#2 (FP)
2680 points/W
1294 points/W
Test#3 (Generic, ZIP)
626 points/W
339 points/W
Test#1 (Memory)
391 points/W
105 points/W
TOTAL
6501 points/W
3054 points/W

Performance/GHz
i7-6500U
i7-6900K
Test#1 (Integers)
6279 points/GHz
6247 points/GHz
Test#2 (FP)
5672 points/GHz
4822 points/GHz
Test#3 (Generic, ZIP)
1305 points/GHz
1444 points/GHz
Test#1 (Memory)
1662 points/GHz
938 points/GHz
TOTAL
14918 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