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Core i7-7700K vs i5-6500


Description
The i7-7700K is based on Kaby Lake architecture while the i5-6500 is based on Skylake.

Using the multithread performance as a reference, the i7-7700K gets a score of 289.9 k points while the i5-6500 gets 179.4 k points.

Summarizing, the i7-7700K is 1.6 times faster than the i5-6500 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906e9
506e3
Core
Kaby Lake-S
Skylake-S
Architecture
Base frecuency
4.2 GHz
3.2 GHz
Boost frecuency
4.5 GHz
3.6 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
4/8
4/4
TDP
95 W
65 W
Cache L1 (d+i)
32+32 kB
4x32+4x32 kB
Cache L2
256 kB
4x256 kB
Cache L3
8192 kB
6144 kB
Date
September 2016
September 2015
Mean monothread perf.
76.98k points
53.7k points
Mean multithread perf.
289.9k points
179.44k points

Non-optimized benchmark
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
i7-7700K
i5-6500
Test#1 (Integers)
4.63k
3.46k (x0.75)
Test#2 (FP)
18.92k
14.61k (x0.77)
Test#3 (Generic, ZIP)
6.22k
4.66k (x0.75)
Test#1 (Memory)
13.92k
6.99k (x0.5)
TOTAL
43.7k
29.71k (x0.68)

Multithread

i7-7700K

i5-6500
Test#1 (Integers)
18.53k
12.52k (x0.68)
Test#2 (FP)
86.49k
51.13k (x0.59)
Test#3 (Generic, ZIP)
28.78k
17.41k (x0.61)
Test#1 (Memory)
9.67k
3.9k (x0.4)
TOTAL
143.47k
84.96k (x0.59)

AVX optimized benchmark
The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.
Monothread
i7-7700K
i5-6500
Test#1 (Integers)
17.55k
13.07k (x0.74)
Test#2 (FP)
27.82k
20.23k (x0.73)
Test#3 (Generic, ZIP)
6.8k
4.93k (x0.72)
Test#1 (Memory)
14.83k
9.2k (x0.62)
TOTAL
67k
47.43k (x0.71)

Multithread

i7-7700K

i5-6500
Test#1 (Integers)
68.4k
49.62k (x0.73)
Test#2 (FP)
118.8k
74.82k (x0.63)
Test#3 (Generic, ZIP)
33.34k
18.46k (x0.55)
Test#1 (Memory)
17.43k
4.21k (x0.24)
TOTAL
237.97k
147.12k (x0.62)

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
i7-7700K
i5-6500
Test#1 (Integers)
30.47k
22.89k (x0.75)
Test#2 (FP)
26.94k
19.87k (x0.74)
Test#3 (Generic, ZIP)
6.25k
4.58k (x0.73)
Test#1 (Memory)
13.32k
6.36k (x0.48)
TOTAL
76.98k
53.7k (x0.7)

Multithread

i7-7700K

i5-6500
Test#1 (Integers)
127.81k
84.36k (x0.66)
Test#2 (FP)
123.7k
72.91k (x0.59)
Test#3 (Generic, ZIP)
29.34k
16.08k (x0.55)
Test#1 (Memory)
9.05k
6.1k (x0.67)
TOTAL
289.9k
179.44k (x0.62)

Performance/W
i7-7700K
i5-6500
Test#1 (Integers)
1345 points/W
1298 points/W
Test#2 (FP)
1302 points/W
1122 points/W
Test#3 (Generic, ZIP)
309 points/W
247 points/W
Test#1 (Memory)
95 points/W
94 points/W
TOTAL
3052 points/W
2761 points/W

Performance/GHz
i7-7700K
i5-6500
Test#1 (Integers)
6770 points/GHz
6359 points/GHz
Test#2 (FP)
5987 points/GHz
5521 points/GHz
Test#3 (Generic, ZIP)
1389 points/GHz
1271 points/GHz
Test#1 (Memory)
2960 points/GHz
1766 points/GHz
TOTAL
17106 points/GHz
14917 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