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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 291.1 k points while the 3800X gets 501.7 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

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)
4629
4474 (-3.36%)
Test#2 (FP)
18925
17408 (-8.01%)
Test#3 (Generic, ZIP)
6221
8230 (32.28%)
Test#1 (Memory)
13922
25149 (80.64%)
TOTAL
43698
55260 (26.46%)

Multithread

i7-7700K

3800X
Test#1 (Integers)
18529
36101 (94.83%)
Test#2 (FP)
86487
178651 (106.57%)
Test#3 (Generic, ZIP)
28778
95978 (233.51%)
Test#1 (Memory)
9674
16034 (65.74%)
TOTAL
143468
326764 (127.76%)

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)
17549
16756 (-4.51%)
Test#2 (FP)
27822
25162 (-9.56%)
Test#3 (Generic, ZIP)
6796
8759 (28.89%)
Test#1 (Memory)
14832
24304 (63.86%)
TOTAL
66999
74981 (11.91%)

Multithread

i7-7700K

3800X
Test#1 (Integers)
68395
131363 (92.06%)
Test#2 (FP)
118805
198512 (67.09%)
Test#3 (Generic, ZIP)
33336
97268 (191.78%)
Test#1 (Memory)
17434
13398 (-23.15%)
TOTAL
237970
440541 (85.12%)

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)
30864
17064 (-44.71%)
Test#2 (FP)
27262
26219 (-3.83%)
Test#3 (Generic, ZIP)
6421
8811 (37.23%)
Test#1 (Memory)
13994
23190 (65.71%)
TOTAL
78541
75284 (-4.15%)

Multithread

i7-7700K

3800X
Test#1 (Integers)
129531
172726 (33.35%)
Test#2 (FP)
122200
214480 (75.52%)
Test#3 (Generic, ZIP)
29617
97380 (228.80%)
Test#1 (Memory)
9751
17109 (75.46%)
TOTAL
291099
501695 (72.35%)

Performance/W
i7-7700K
3800X
Test#1 (Integers)
1363 points/W
1645 points/W
Test#2 (FP)
1286 points/W
2043 points/W
Test#3 (Generic, ZIP)
312 points/W
927 points/W
Test#1 (Memory)
103 points/W
163 points/W
TOTAL
3064 points/W
4778 points/W

Performance/GHz
i7-7700K
3800X
Test#1 (Integers)
6859 points/GHz
3792 points/GHz
Test#2 (FP)
6058 points/GHz
5826 points/GHz
Test#3 (Generic, ZIP)
1427 points/GHz
1958 points/GHz
Test#1 (Memory)
3110 points/GHz
5153 points/GHz
TOTAL
17453 points/GHz
16730 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. 3.7.9