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Core i7-7660U vs Ryzen 7 3800X


Description
The i7-7660U is based on Kaby Lake architecture while the 3800X is based on Zen 2.

Using the multithread performance as a reference, the i7-7660U gets a score of 132.8 k points while the 3800X gets 497.7 k points.

Summarizing, the 3800X is 3.7 times faster than the i7-7660U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806e9
870f10
Core
Kaby Lake-U
Matisse
Architecture
Base frecuency
2.5 GHz
3.9 GHz
Boost frecuency
4 GHz
4.5 GHz
Socket
BGA 1356
AM4
Cores/Threads
2/4
8/16
TDP
15 W
105 W
Cache L1 (d+i)
2x32+2x32 kB
8x32+8x32 kB
Cache L2
2x256 kB
8x512 kB
Cache L3
4096 kB
32768 kB
Date
January 2017
July 2019
Mean monothread perf.
57.46k points
75.81k points
Mean multithread perf.
132.81k points
497.74k points

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
i7-7660U
3800X
Test#1 (Integers)
22.46k
17.1k (x0.76)
Test#2 (FP)
19.29k
26.59k (x1.38)
Test#3 (Generic, ZIP)
4.77k
8.91k (x1.87)
Test#1 (Memory)
10.94k
23.21k (x2.12)
TOTAL
57.46k
75.81k (x1.32)

Multithread

i7-7660U

3800X
Test#1 (Integers)
56.67k
172.04k (x3.04)
Test#2 (FP)
46.95k
214.03k (x4.56)
Test#3 (Generic, ZIP)
12.36k
97.1k (x7.86)
Test#1 (Memory)
16.84k
14.57k (x0.87)
TOTAL
132.81k
497.74k (x3.75)

Performance/W
i7-7660U
3800X
Test#1 (Integers)
3778 points/W
1638 points/W
Test#2 (FP)
3130 points/W
2038 points/W
Test#3 (Generic, ZIP)
824 points/W
925 points/W
Test#1 (Memory)
1122 points/W
139 points/W
TOTAL
8854 points/W
4740 points/W

Performance/GHz
i7-7660U
3800X
Test#1 (Integers)
5614 points/GHz
3799 points/GHz
Test#2 (FP)
4823 points/GHz
5909 points/GHz
Test#3 (Generic, ZIP)
1193 points/GHz
1981 points/GHz
Test#1 (Memory)
2735 points/GHz
5158 points/GHz
TOTAL
14365 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