Core i7-8700k vs i7-7700K
Description
The i7-8700k is based on Coffee Lake architecture while the i7-7700K is based on Kaby Lake.
Using the multithread performance as a reference, the i7-8700k gets a score of 443.8 k points while the i7-7700K gets 289.8 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 i7-8700k gets a score of 443.8 k points while the i7-7700K gets 289.8 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
906ea
906e9
Core
Coffee Lake-S
Kaby Lake-S
Base frecuency
3.7 GHz
4.2 GHz
Boost frecuency
4.7 GHz
4.5 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
6/12
4/8
TDP
95 W
95 W
Cache L1 (d+i)
6x32+6x32 kB
32+32 kB
Cache L2
6x256 kB
256 kB
Cache L3
12288 kB
8192 kB
Date
October 2017
September 2016
Mean monothread perf.
80.6k points
76.9k points
Mean multithread perf.
443.77k points
289.82k 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
i7-8700k
i7-7700K
Test#1 (Integers)
4.13k
4.63k (x1.12)
Test#2 (FP)
16.96k
18.92k (x1.12)
Test#3 (Generic, ZIP)
5.56k
6.22k (x1.12)
Test#1 (Memory)
12.85k
13.92k (x1.08)
TOTAL
39.5k
43.7k (x1.11)
Multithread
i7-8700k
i7-7700K
Test#1 (Integers)
24.01k
18.53k (x0.77)
Test#2 (FP)
108.69k
86.49k (x0.8)
Test#3 (Generic, ZIP)
36.62k
28.78k (x0.79)
Test#1 (Memory)
9.33k
9.67k (x1.04)
TOTAL
178.64k
143.47k (x0.8)
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
i7-8700k
i7-7700K
Test#1 (Integers)
16.87k
17.55k (x1.04)
Test#2 (FP)
26.12k
27.82k (x1.07)
Test#3 (Generic, ZIP)
6.33k
6.8k (x1.07)
Test#1 (Memory)
13.71k
14.83k (x1.08)
TOTAL
63.03k
67k (x1.06)
Multithread
i7-8700k
i7-7700K
Test#1 (Integers)
105.74k
68.4k (x0.65)
Test#2 (FP)
180.52k
118.8k (x0.66)
Test#3 (Generic, ZIP)
44.99k
33.34k (x0.74)
Test#1 (Memory)
8.51k
17.43k (x2.05)
TOTAL
339.77k
237.97k (x0.7)
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
i7-8700k
i7-7700K
Test#1 (Integers)
31.2k
30.44k (x0.98)
Test#2 (FP)
27.82k
26.91k (x0.97)
Test#3 (Generic, ZIP)
6.57k
6.25k (x0.95)
Test#1 (Memory)
15k
13.3k (x0.89)
TOTAL
80.6k
76.9k (x0.95)
Multithread
i7-8700k
i7-7700K
Test#1 (Integers)
202.42k
127.73k (x0.63)
Test#2 (FP)
186.33k
123.68k (x0.66)
Test#3 (Generic, ZIP)
44.96k
29.34k (x0.65)
Test#1 (Memory)
10.05k
9.08k (x0.9)
TOTAL
443.77k
289.82k (x0.65)
Performance/W
i7-8700k
i7-7700K
Test#1 (Integers)
2131 points/W
1345 points/W
Test#2 (FP)
1961 points/W
1302 points/W
Test#3 (Generic, ZIP)
473 points/W
309 points/W
Test#1 (Memory)
106 points/W
96 points/W
TOTAL
4671 points/W
3051 points/W
Performance/GHz
i7-8700k
i7-7700K
Test#1 (Integers)
6639 points/GHz
6765 points/GHz
Test#2 (FP)
5919 points/GHz
5981 points/GHz
Test#3 (Generic, ZIP)
1397 points/GHz
1388 points/GHz
Test#1 (Memory)
3192 points/GHz
2955 points/GHz
TOTAL
17148 points/GHz
17089 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