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Core i7-7700K vs Ryzen 7 3800X


Description
The i7-7700K is based on Kaby Lake architecture while the 3800X is based on Zen 2.

Using the multithread performance as a reference, the i7-7700K gets a score of 289.9 k points while the 3800X gets 497.7 k points.

Summarizing, the 3800X is 1.7 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
870f10
Core
Kaby Lake-S
Matisse
Architecture
Base frecuency
4.2 GHz
3.9 GHz
Boost frecuency
4.5 GHz
4.5 GHz
Socket
LGA 1151
AM4
Cores/Threads
4/8
8/16
TDP
95 W
105 W
Cache L1 (d+i)
32+32 kB
8x32+8x32 kB
Cache L2
256 kB
8x512 kB
Cache L3
8192 kB
32768 kB
Date
September 2016
July 2019
Mean monothread perf.
76.98k points
75.81k points
Mean multithread perf.
289.9k points
497.74k 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
3800X
Test#1 (Integers)
4.63k
4.47k (x0.97)
Test#2 (FP)
18.92k
17.41k (x0.92)
Test#3 (Generic, ZIP)
6.22k
8.23k (x1.32)
Test#1 (Memory)
13.92k
25.15k (x1.81)
TOTAL
43.7k
55.26k (x1.26)

Multithread

i7-7700K

3800X
Test#1 (Integers)
18.53k
36.1k (x1.95)
Test#2 (FP)
86.49k
178.65k (x2.07)
Test#3 (Generic, ZIP)
28.78k
95.98k (x3.34)
Test#1 (Memory)
9.67k
16.03k (x1.66)
TOTAL
143.47k
326.76k (x2.28)

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
3800X
Test#1 (Integers)
17.55k
16.76k (x0.95)
Test#2 (FP)
27.82k
25.16k (x0.9)
Test#3 (Generic, ZIP)
6.8k
8.76k (x1.29)
Test#1 (Memory)
14.83k
24.3k (x1.64)
TOTAL
67k
74.98k (x1.12)

Multithread

i7-7700K

3800X
Test#1 (Integers)
68.4k
131.36k (x1.92)
Test#2 (FP)
118.8k
198.51k (x1.67)
Test#3 (Generic, ZIP)
33.34k
97.27k (x2.92)
Test#1 (Memory)
17.43k
13.4k (x0.77)
TOTAL
237.97k
440.54k (x1.85)

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
3800X
Test#1 (Integers)
30.47k
17.1k (x0.56)
Test#2 (FP)
26.94k
26.59k (x0.99)
Test#3 (Generic, ZIP)
6.25k
8.91k (x1.43)
Test#1 (Memory)
13.32k
23.21k (x1.74)
TOTAL
76.98k
75.81k (x0.98)

Multithread

i7-7700K

3800X
Test#1 (Integers)
127.81k
172.04k (x1.35)
Test#2 (FP)
123.7k
214.03k (x1.73)
Test#3 (Generic, ZIP)
29.34k
97.1k (x3.31)
Test#1 (Memory)
9.05k
14.57k (x1.61)
TOTAL
289.9k
497.74k (x1.72)

Performance/W
i7-7700K
3800X
Test#1 (Integers)
1345 points/W
1638 points/W
Test#2 (FP)
1302 points/W
2038 points/W
Test#3 (Generic, ZIP)
309 points/W
925 points/W
Test#1 (Memory)
95 points/W
139 points/W
TOTAL
3052 points/W
4740 points/W

Performance/GHz
i7-7700K
3800X
Test#1 (Integers)
6770 points/GHz
3799 points/GHz
Test#2 (FP)
5987 points/GHz
5909 points/GHz
Test#3 (Generic, ZIP)
1389 points/GHz
1981 points/GHz
Test#1 (Memory)
2960 points/GHz
5158 points/GHz
TOTAL
17106 points/GHz
16847 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. 3.11.4