Core i7-8700k vs i7-8700
Description
Both models i7-8700k and i7-8700 are based on Coffee Lake architecture.
Coffee Lake is the second refinement of Intel’s 14nm (Tri-Gate) technology. While it uses LGA1151 socket, it is incompatible with previous generations due to electrical changes in socket’s pins so these CPUs require Z370 chipset. This kind of generation introduced more cores in every range to compete with new AMD’s architecture. Coffee Lake uses DDR4 memory at 2400MHz for i3 and at 2666MHz for i5, i7 CPUs plus iGPU frequency has been increased 50MHz with respect to previous generation.
Using the multithread performance as a reference, the i7-8700k gets a score of 443.8 k points while the i7-8700 gets 389 k points.
Summarizing, the i7-8700k is 1.1 times faster than the i7-8700. To get a proper comparison between both models, take a look to the data shown below.
Coffee Lake is the second refinement of Intel’s 14nm (Tri-Gate) technology. While it uses LGA1151 socket, it is incompatible with previous generations due to electrical changes in socket’s pins so these CPUs require Z370 chipset. This kind of generation introduced more cores in every range to compete with new AMD’s architecture. Coffee Lake uses DDR4 memory at 2400MHz for i3 and at 2666MHz for i5, i7 CPUs plus iGPU frequency has been increased 50MHz with respect to previous generation.
Using the multithread performance as a reference, the i7-8700k gets a score of 443.8 k points while the i7-8700 gets 389 k points.
Summarizing, the i7-8700k is 1.1 times faster than the i7-8700. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
906ea
906ea
Core
Coffee Lake-S
Coffee Lake-S
Base frecuency
3.7 GHz
3.2 GHz
Boost frecuency
4.7 GHz
4.6 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
6/12
6/12
TDP
95 W
65 W
Cache L1 (d+i)
6x32+6x32 kB
6x32+6x32 kB
Cache L2
6x256 kB
6x256 kB
Cache L3
12288 kB
12288 kB
Date
October 2017
October 2017
Mean monothread perf.
80.6k points
75.01k points
Mean multithread perf.
443.77k points
388.95k 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
i7-8700
Test#1 (Integers)
4.13k
4.48k (x1.09)
Test#2 (FP)
16.96k
18.31k (x1.08)
Test#3 (Generic, ZIP)
5.56k
5.88k (x1.06)
Test#1 (Memory)
12.85k
13.45k (x1.05)
TOTAL
39.5k
42.12k (x1.07)
Multithread
i7-8700k
i7-8700
Test#1 (Integers)
24.01k
27.35k (x1.14)
Test#2 (FP)
108.69k
124.94k (x1.15)
Test#3 (Generic, ZIP)
36.62k
43.23k (x1.18)
Test#1 (Memory)
9.33k
7.08k (x0.76)
TOTAL
178.64k
202.61k (x1.13)
SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
i7-8700k
i7-8700
Test#1 (Integers)
12.92k
16.45k (x1.27)
Test#2 (FP)
20.68k
23.74k (x1.15)
Test#3 (Generic, ZIP)
5.3k
6.24k (x1.18)
Test#1 (Memory)
12.59k
13.43k (x1.07)
TOTAL
51.48k
59.86k (x1.16)
Multithread
i7-8700k
i7-8700
Test#1 (Integers)
94.26k
100.94k (x1.07)
Test#2 (FP)
152.55k
159.09k (x1.04)
Test#3 (Generic, ZIP)
39.74k
43.61k (x1.1)
Test#1 (Memory)
8.53k
6.59k (x0.77)
TOTAL
295.07k
310.23k (x1.05)
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
i7-8700k
i7-8700
Test#1 (Integers)
16.87k
16.57k (x0.98)
Test#2 (FP)
26.12k
25.52k (x0.98)
Test#3 (Generic, ZIP)
6.33k
6.01k (x0.95)
Test#1 (Memory)
13.71k
12.82k (x0.94)
TOTAL
63.03k
60.92k (x0.97)
Multithread
i7-8700k
i7-8700
Test#1 (Integers)
105.74k
101.85k (x0.96)
Test#2 (FP)
180.52k
170.31k (x0.94)
Test#3 (Generic, ZIP)
44.99k
43.12k (x0.96)
Test#1 (Memory)
8.51k
7.11k (x0.84)
TOTAL
339.77k
322.39k (x0.95)
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
i7-8700
Test#1 (Integers)
31.2k
29.25k (x0.94)
Test#2 (FP)
27.82k
25.98k (x0.93)
Test#3 (Generic, ZIP)
6.57k
6.05k (x0.92)
Test#1 (Memory)
15k
13.74k (x0.92)
TOTAL
80.6k
75.01k (x0.93)
Multithread
i7-8700k
i7-8700
Test#1 (Integers)
202.42k
182.56k (x0.9)
Test#2 (FP)
186.33k
159.9k (x0.86)
Test#3 (Generic, ZIP)
44.96k
38.18k (x0.85)
Test#1 (Memory)
10.05k
8.31k (x0.83)
TOTAL
443.77k
388.95k (x0.88)
Performance/W
i7-8700k
i7-8700
Test#1 (Integers)
2131 points/W
2809 points/W
Test#2 (FP)
1961 points/W
2460 points/W
Test#3 (Generic, ZIP)
473 points/W
587 points/W
Test#1 (Memory)
106 points/W
128 points/W
TOTAL
4671 points/W
5984 points/W
Performance/GHz
i7-8700k
i7-8700
Test#1 (Integers)
6639 points/GHz
6358 points/GHz
Test#2 (FP)
5919 points/GHz
5647 points/GHz
Test#3 (Generic, ZIP)
1397 points/GHz
1316 points/GHz
Test#1 (Memory)
3192 points/GHz
2986 points/GHz
TOTAL
17148 points/GHz
16307 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