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Core i5-9600K vs i7-8700k


Specs
CPUID
906ed
906ea
Core
Coffee Lake-S
Coffee Lake-S
Architecture
Base frecuency
3.7 GHz
3.7 GHz
Boost frecuency
4.6 GHz
4.7 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
6/6
6/12
TDP
95 W
95 W
Cache L1 (d+i)
6x32+6x32 kB
6x32+6x32 kB
Cache L2
6x256 kB
6x256 kB
Cache L3
9216 kB
12288 kB
Date
October 2018
October 2017

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
i5-9600K
i7-8700k
Test#1 (Integers)
4688
4127 (-11.96%)
Test#2 (FP)
19351
16959 (-12.36%)
Test#3 (Generic, ZIP)
6083
5564 (-8.54%)
Test#1 (Memory)
13807
12845 (-6.96%)
TOTAL
43929
39495 (-10.09%)

Multithread

i5-9600K

i7-8700k
Test#1 (Integers)
26240
24011 (-8.49%)
Test#2 (FP)
107946
108690 (0.69%)
Test#3 (Generic, ZIP)
34499
36616 (6.14%)
Test#1 (Memory)
8102
9327 (15.12%)
TOTAL
176786
178644 (1.05%)

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
i5-9600K
i7-8700k
Test#1 (Integers)
16747
16874 (0.75%)
Test#2 (FP)
25497
26119 (2.44%)
Test#3 (Generic, ZIP)
6171
6329 (2.55%)
Test#1 (Memory)
13062
13708 (4.95%)
TOTAL
61477
63030 (2.53%)

Multithread

i5-9600K

i7-8700k
Test#1 (Integers)
96034
105740 (10.11%)
Test#2 (FP)
143784
180520 (25.55%)
Test#3 (Generic, ZIP)
35064
44994 (28.32%)
Test#1 (Memory)
8453
8512 (0.69%)
TOTAL
283334
339766 (19.92%)

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
i5-9600K
i7-8700k
Test#1 (Integers)
30642
31311 (2.18%)
Test#2 (FP)
26751
27982 (4.60%)
Test#3 (Generic, ZIP)
6331
6645 (4.97%)
Test#1 (Memory)
14028
15193 (8.30%)
TOTAL
77751
81130 (4.35%)

Multithread

i5-9600K

i7-8700k
Test#1 (Integers)
174924
202490 (15.76%)
Test#2 (FP)
153881
186057 (20.91%)
Test#3 (Generic, ZIP)
35932
44919 (25.01%)
Test#1 (Memory)
8000
10335 (29.18%)
TOTAL
372737
443800 (19.07%)

Performance/W
i5-9600K
i7-8700k
Test#1 (Integers)
1841 points/W
2131 points/W
Test#2 (FP)
1620 points/W
1958 points/W
Test#3 (Generic, ZIP)
378 points/W
473 points/W
Test#1 (Memory)
84 points/W
109 points/W
TOTAL
3924 points/W
4672 points/W

Performance/GHz
i5-9600K
i7-8700k
Test#1 (Integers)
6661 points/GHz
6662 points/GHz
Test#2 (FP)
5815 points/GHz
5954 points/GHz
Test#3 (Generic, ZIP)
1376 points/GHz
1414 points/GHz
Test#1 (Memory)
3049 points/GHz
3232 points/GHz
TOTAL
16902 points/GHz
17262 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. 3.7.4