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Core i7-9700K vs i5-6600K


Description
The i7-9700K is based on Coffee Lake architecture while the i5-6600K is based on Skylake.

Using the multithread performance as a reference, the i7-9700K gets a score of 494.4 k points while the i5-6600K gets 199.9 k points.

Summarizing, the i7-9700K is 2.5 times faster than the i5-6600K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ed
506e3
Core
Coffee Lake-S
Skylake-S
Architecture
Base frecuency
3.6 GHz
3.5 GHz
Boost frecuency
4.9 GHz
3.9 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
8/8
4/4
TDP
95 W
95 W
Cache L1 (d+i)
8x32+8x32 kB
4x32+4x32 kB
Cache L2
8x256 kB
256 kB
Cache L3
12288 kB
6144 kB
Date
October 2018
May 2015
Mean monothread perf.
81.96k points
56.21k points
Mean multithread perf.
494.38k points
199.91k points

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
i7-9700K
i5-6600K
Test#1 (Integers)
17.43k
17.24k (x0.99)
Test#2 (FP)
26.9k
26.5k (x0.99)
Test#3 (Generic, ZIP)
6.24k
6.45k (x1.03)
Test#1 (Memory)
14.12k
9.09k (x0.64)
TOTAL
64.69k
59.28k (x0.92)

Multithread

i7-9700K

i5-6600K
Test#1 (Integers)
134.6k
68.47k (x0.51)
Test#2 (FP)
191.15k
105.05k (x0.55)
Test#3 (Generic, ZIP)
42.84k
25.24k (x0.59)
Test#1 (Memory)
7.25k
10.5k (x1.45)
TOTAL
375.84k
209.28k (x0.56)

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
i7-9700K
i5-6600K
Test#1 (Integers)
32.45k
24.19k (x0.75)
Test#2 (FP)
28.3k
21.31k (x0.75)
Test#3 (Generic, ZIP)
6.27k
4.95k (x0.79)
Test#1 (Memory)
14.93k
5.75k (x0.39)
TOTAL
81.96k
56.21k (x0.69)

Multithread

i7-9700K

i5-6600K
Test#1 (Integers)
244.31k
93.15k (x0.38)
Test#2 (FP)
199.72k
81.18k (x0.41)
Test#3 (Generic, ZIP)
43.15k
18.29k (x0.42)
Test#1 (Memory)
7.2k
7.29k (x1.01)
TOTAL
494.38k
199.91k (x0.4)

Performance/W
i7-9700K
i5-6600K
Test#1 (Integers)
2572 points/W
981 points/W
Test#2 (FP)
2102 points/W
855 points/W
Test#3 (Generic, ZIP)
454 points/W
193 points/W
Test#1 (Memory)
76 points/W
77 points/W
TOTAL
5204 points/W
2104 points/W

Performance/GHz
i7-9700K
i5-6600K
Test#1 (Integers)
6623 points/GHz
6203 points/GHz
Test#2 (FP)
5776 points/GHz
5463 points/GHz
Test#3 (Generic, ZIP)
1281 points/GHz
1270 points/GHz
Test#1 (Memory)
3047 points/GHz
1475 points/GHz
TOTAL
16726 points/GHz
14412 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