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Core i7-8700k vs i7-8700


Specs
CPUID
906ea
906ea
Core
Coffee Lake-S
Coffee Lake-S
Architecture
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

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)
4127
4480 (8.55%)
Test#2 (FP)
16959
18306 (7.94%)
Test#3 (Generic, ZIP)
5564
5879 (5.65%)
Test#1 (Memory)
12845
13453 (4.73%)
TOTAL
39495
42117 (6.64%)

Multithread

i7-8700k

i7-8700
Test#1 (Integers)
24011
27353 (13.92%)
Test#2 (FP)
108690
124941 (14.95%)
Test#3 (Generic, ZIP)
36616
43233 (18.07%)
Test#1 (Memory)
9327
7082 (-24.06%)
TOTAL
178644
202610 (13.42%)

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)
16874
16574 (-1.78%)
Test#2 (FP)
26119
25517 (-2.30%)
Test#3 (Generic, ZIP)
6329
6014 (-4.98%)
Test#1 (Memory)
13708
12818 (-6.50%)
TOTAL
63030
60922 (-3.34%)

Multithread

i7-8700k

i7-8700
Test#1 (Integers)
105740
101852 (-3.68%)
Test#2 (FP)
180520
170305 (-5.66%)
Test#3 (Generic, ZIP)
44994
43124 (-4.16%)
Test#1 (Memory)
8512
7110 (-16.47%)
TOTAL
339766
322391 (-5.11%)

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)
31311
29150 (-6.90%)
Test#2 (FP)
27982
26028 (-6.98%)
Test#3 (Generic, ZIP)
6645
6120 (-7.90%)
Test#1 (Memory)
15193
13809 (-9.10%)
TOTAL
81130
75108 (-7.42%)

Multithread

i7-8700k

i7-8700
Test#1 (Integers)
202490
183382 (-9.44%)
Test#2 (FP)
186057
166498 (-10.51%)
Test#3 (Generic, ZIP)
44919
40353 (-10.17%)
Test#1 (Memory)
10335
8358 (-19.13%)
TOTAL
443800
398591 (-10.19%)

Performance/W
i7-8700k
i7-8700
Test#1 (Integers)
2131 points/W
2821 points/W
Test#2 (FP)
1958 points/W
2562 points/W
Test#3 (Generic, ZIP)
473 points/W
621 points/W
Test#1 (Memory)
109 points/W
129 points/W
TOTAL
4672 points/W
6132 points/W

Performance/GHz
i7-8700k
i7-8700
Test#1 (Integers)
6662 points/GHz
6337 points/GHz
Test#2 (FP)
5954 points/GHz
5658 points/GHz
Test#3 (Generic, ZIP)
1414 points/GHz
1330 points/GHz
Test#1 (Memory)
3232 points/GHz
3002 points/GHz
TOTAL
17262 points/GHz
16328 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. 3.7.3