Ryzen 9 3900X vs Core i7-8700k
Description
The 3900X is based on Zen 2 architecture while the i7-8700k is based on Coffee Lake.
Using the multithread performance as a reference, the 3900X gets a score of 756.3 k points while the i7-8700k gets 443.8 k points.
Summarizing, the 3900X is 1.7 times faster than the i7-8700k. To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the 3900X gets a score of 756.3 k points while the i7-8700k gets 443.8 k points.
Summarizing, the 3900X is 1.7 times faster than the i7-8700k. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
870f10
906ea
Core
Matisse
Coffee Lake-S
Base frecuency
3.8 GHz
3.7 GHz
Boost frecuency
4.6 GHz
4.7 GHz
Socket
AM4
LGA 1151
Cores/Threads
12/24
6/12
TDP
105 W
95 W
Cache L1 (d+i)
12x32+12x32 kB
6x32+6x32 kB
Cache L2
12x512 kB
6x256 kB
Cache L3
4x16384 kB
12288 kB
Date
July 2019
October 2017
Mean monothread perf.
72.51k points
80.6k points
Mean multithread perf.
756.3k 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
3900X
i7-8700k
Test#1 (Integers)
4.46k
4.13k (x0.92)
Test#2 (FP)
18.46k
16.96k (x0.92)
Test#3 (Generic, ZIP)
8.05k
5.56k (x0.69)
Test#1 (Memory)
23.71k
12.85k (x0.54)
TOTAL
54.68k
39.5k (x0.72)
Multithread
3900X
i7-8700k
Test#1 (Integers)
52.65k
24.01k (x0.46)
Test#2 (FP)
265.41k
108.69k (x0.41)
Test#3 (Generic, ZIP)
140.78k
36.62k (x0.26)
Test#1 (Memory)
46.91k
9.33k (x0.2)
TOTAL
505.76k
178.64k (x0.35)
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
3900X
i7-8700k
Test#1 (Integers)
17.35k
12.92k (x0.74)
Test#2 (FP)
25.87k
20.68k (x0.8)
Test#3 (Generic, ZIP)
8.72k
5.3k (x0.61)
Test#1 (Memory)
27.86k
12.59k (x0.45)
TOTAL
79.8k
51.48k (x0.65)
Multithread
3900X
i7-8700k
Test#1 (Integers)
201.57k
94.26k (x0.47)
Test#2 (FP)
284.41k
152.55k (x0.54)
Test#3 (Generic, ZIP)
145.16k
39.74k (x0.27)
Test#1 (Memory)
100.56k
8.53k (x0.08)
TOTAL
731.7k
295.07k (x0.4)
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
3900X
i7-8700k
Test#1 (Integers)
16.95k
16.87k (x1)
Test#2 (FP)
25.37k
26.12k (x1.03)
Test#3 (Generic, ZIP)
9.23k
6.33k (x0.69)
Test#1 (Memory)
24.83k
13.71k (x0.55)
TOTAL
76.38k
63.03k (x0.83)
Multithread
3900X
i7-8700k
Test#1 (Integers)
196.31k
105.74k (x0.54)
Test#2 (FP)
290.5k
180.52k (x0.62)
Test#3 (Generic, ZIP)
143.95k
44.99k (x0.31)
Test#1 (Memory)
64.92k
8.51k (x0.13)
TOTAL
695.69k
339.77k (x0.49)
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
3900X
i7-8700k
Test#1 (Integers)
16.73k
31.2k (x1.86)
Test#2 (FP)
24.74k
27.82k (x1.12)
Test#3 (Generic, ZIP)
8.82k
6.57k (x0.74)
Test#1 (Memory)
22.22k
15k (x0.68)
TOTAL
72.51k
80.6k (x1.11)
Multithread
3900X
i7-8700k
Test#1 (Integers)
248.24k
202.42k (x0.82)
Test#2 (FP)
309.66k
186.33k (x0.6)
Test#3 (Generic, ZIP)
140.01k
44.96k (x0.32)
Test#1 (Memory)
58.39k
10.05k (x0.17)
TOTAL
756.3k
443.77k (x0.59)
Performance/W
3900X
i7-8700k
Test#1 (Integers)
2364 points/W
2131 points/W
Test#2 (FP)
2949 points/W
1961 points/W
Test#3 (Generic, ZIP)
1333 points/W
473 points/W
Test#1 (Memory)
556 points/W
106 points/W
TOTAL
7203 points/W
4671 points/W
Performance/GHz
3900X
i7-8700k
Test#1 (Integers)
3638 points/GHz
6639 points/GHz
Test#2 (FP)
5377 points/GHz
5919 points/GHz
Test#3 (Generic, ZIP)
1917 points/GHz
1397 points/GHz
Test#1 (Memory)
4831 points/GHz
3192 points/GHz
TOTAL
15763 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