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Core i5-6500 vs i7-6900K


Description
The i5-6500 is based on Skylake architecture while the i7-6900K is based on Broadwell.

Using the multithread performance as a reference, the i5-6500 gets a score of 179.4 k points while the i7-6900K gets 427.5 k points.

Summarizing, the i7-6900K is 2.4 times faster than the i5-6500 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
406f1
Core
Skylake-S
Broadwell-E
Architecture
Base frecuency
3.2 GHz
3.2 GHz
Boost frecuency
3.6 GHz
3.7 GHz
Socket
LGA 1151
LGA 2011-3
Cores/Threads
4/4
8/16
TDP
65 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
September 2015
September 2016
Mean monothread perf.
53.7k points
49.76k points
Mean multithread perf.
179.44k 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
i5-6500
i7-6900K
Test#1 (Integers)
22.89k
23.11k (x1.01)
Test#2 (FP)
19.87k
17.84k (x0.9)
Test#3 (Generic, ZIP)
4.58k
5.34k (x1.17)
Test#1 (Memory)
6.36k
3.47k (x0.55)
TOTAL
53.7k
49.76k (x0.93)

Multithread

i5-6500

i7-6900K
Test#1 (Integers)
84.36k
184.19k (x2.18)
Test#2 (FP)
72.91k
181.2k (x2.49)
Test#3 (Generic, ZIP)
16.08k
47.44k (x2.95)
Test#1 (Memory)
6.1k
14.69k (x2.41)
TOTAL
179.44k
427.51k (x2.38)

Performance/W
i5-6500
i7-6900K
Test#1 (Integers)
1298 points/W
1316 points/W
Test#2 (FP)
1122 points/W
1294 points/W
Test#3 (Generic, ZIP)
247 points/W
339 points/W
Test#1 (Memory)
94 points/W
105 points/W
TOTAL
2761 points/W
3054 points/W

Performance/GHz
i5-6500
i7-6900K
Test#1 (Integers)
6359 points/GHz
6247 points/GHz
Test#2 (FP)
5521 points/GHz
4822 points/GHz
Test#3 (Generic, ZIP)
1271 points/GHz
1444 points/GHz
Test#1 (Memory)
1766 points/GHz
938 points/GHz
TOTAL
14917 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