Core i7-7700K vs i7-8700k
Description
The i7-7700K is based on Kaby Lake architecture while the i7-8700k is based on Coffee Lake.
Using the multithread performance as a reference, the i7-7700K gets a score of 289.9 k points while the i7-8700k gets 443.8 k points.
Summarizing, the i7-8700k is 1.5 times faster than the i7-7700K . To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i7-7700K gets a score of 289.9 k points while the i7-8700k gets 443.8 k points.
Summarizing, the i7-8700k is 1.5 times faster than the i7-7700K . To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
906e9
906ea
Core
Kaby Lake-S
Coffee Lake-S
Base frecuency
4.2 GHz
3.7 GHz
Boost frecuency
4.5 GHz
4.7 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
4/8
6/12
TDP
95 W
95 W
Cache L1 (d+i)
32+32 kB
6x32+6x32 kB
Cache L2
256 kB
6x256 kB
Cache L3
8192 kB
12288 kB
Date
September 2016
October 2017
Mean monothread perf.
76.98k points
80.6k points
Mean multithread perf.
289.9k points
443.77k 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
i7-8700k
Test#1 (Integers)
4.63k
4.13k (x0.89)
Test#2 (FP)
18.92k
16.96k (x0.9)
Test#3 (Generic, ZIP)
6.22k
5.56k (x0.89)
Test#1 (Memory)
13.92k
12.85k (x0.92)
TOTAL
43.7k
39.5k (x0.9)
Multithread
i7-7700K
i7-8700k
Test#1 (Integers)
18.53k
24.01k (x1.3)
Test#2 (FP)
86.49k
108.69k (x1.26)
Test#3 (Generic, ZIP)
28.78k
36.62k (x1.27)
Test#1 (Memory)
9.67k
9.33k (x0.96)
TOTAL
143.47k
178.64k (x1.25)
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
i7-8700k
Test#1 (Integers)
17.55k
16.87k (x0.96)
Test#2 (FP)
27.82k
26.12k (x0.94)
Test#3 (Generic, ZIP)
6.8k
6.33k (x0.93)
Test#1 (Memory)
14.83k
13.71k (x0.92)
TOTAL
67k
63.03k (x0.94)
Multithread
i7-7700K
i7-8700k
Test#1 (Integers)
68.4k
105.74k (x1.55)
Test#2 (FP)
118.8k
180.52k (x1.52)
Test#3 (Generic, ZIP)
33.34k
44.99k (x1.35)
Test#1 (Memory)
17.43k
8.51k (x0.49)
TOTAL
237.97k
339.77k (x1.43)
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
i7-8700k
Test#1 (Integers)
30.47k
31.2k (x1.02)
Test#2 (FP)
26.94k
27.82k (x1.03)
Test#3 (Generic, ZIP)
6.25k
6.57k (x1.05)
Test#1 (Memory)
13.32k
15k (x1.13)
TOTAL
76.98k
80.6k (x1.05)
Multithread
i7-7700K
i7-8700k
Test#1 (Integers)
127.81k
202.42k (x1.58)
Test#2 (FP)
123.7k
186.33k (x1.51)
Test#3 (Generic, ZIP)
29.34k
44.96k (x1.53)
Test#1 (Memory)
9.05k
10.05k (x1.11)
TOTAL
289.9k
443.77k (x1.53)
Performance/W
i7-7700K
i7-8700k
Test#1 (Integers)
1345 points/W
2131 points/W
Test#2 (FP)
1302 points/W
1961 points/W
Test#3 (Generic, ZIP)
309 points/W
473 points/W
Test#1 (Memory)
95 points/W
106 points/W
TOTAL
3052 points/W
4671 points/W
Performance/GHz
i7-7700K
i7-8700k
Test#1 (Integers)
6770 points/GHz
6639 points/GHz
Test#2 (FP)
5987 points/GHz
5919 points/GHz
Test#3 (Generic, ZIP)
1389 points/GHz
1397 points/GHz
Test#1 (Memory)
2960 points/GHz
3192 points/GHz
TOTAL
17106 points/GHz
17148 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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Hardlimit Benchmark Central - Ver. 3.11.4