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Core i7-6600U vs Ryzen 9 3900


Description
The i7-6600U is based on Skylake architecture while the 3900 is based on Zen 2.

Using the multithread performance as a reference, the i7-6600U gets a score of 79.2 k points while the 3900 gets 687.5 k points.

Summarizing, the 3900 is 8.7 times faster than the i7-6600U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
406e3
870f10
Core
Skylake-U
Matisse
Architecture
Base frecuency
2.6 GHz
3.1 GHz
Boost frecuency
3.4 GHz
4.3 GHz
Socket
BGA1356
AM4
Cores/Threads
2/4
12/24
TDP
15 W
65 W
Cache L1 (d+i)
2x32+2x32 kB
12x32+12x32 kB
Cache L2
2x256 kB
12x512 kB
Cache L3
4096 kB
4x16384 kB
Date
September 2015
September 2019
Mean monothread perf.
39.73k points
74.97k points
Mean multithread perf.
79.22k points
687.5k 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
i7-6600U
3900
Test#1 (Integers)
2.75k
4.39k (x1.6)
Test#2 (FP)
12.23k
16.99k (x1.39)
Test#3 (Generic, ZIP)
3.9k
7.74k (x1.99)
Test#1 (Memory)
5.61k
24.57k (x4.38)
TOTAL
24.48k
53.69k (x2.19)

Multithread

i7-6600U

3900
Test#1 (Integers)
5.23k
48.45k (x9.26)
Test#2 (FP)
25k
230.81k (x9.23)
Test#3 (Generic, ZIP)
8.98k
122.82k (x13.68)
Test#1 (Memory)
4.73k
54.73k (x11.56)
TOTAL
43.95k
456.8k (x10.39)

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
i7-6600U
3900
Test#1 (Integers)
6.76k
16.59k (x2.45)
Test#2 (FP)
9.58k
24.55k (x2.56)
Test#3 (Generic, ZIP)
2.46k
8.55k (x3.47)
Test#1 (Memory)
4.18k
26.28k (x6.29)
TOTAL
22.99k
75.97k (x3.3)

Multithread

i7-6600U

3900
Test#1 (Integers)
14.37k
181.33k (x12.62)
Test#2 (FP)
23.79k
261.01k (x10.97)
Test#3 (Generic, ZIP)
5.71k
126.62k (x22.19)
Test#1 (Memory)
4.29k
66.64k (x15.53)
TOTAL
48.16k
635.6k (x13.2)

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
i7-6600U
3900
Test#1 (Integers)
8.49k
16.16k (x1.9)
Test#2 (FP)
10.92k
23.75k (x2.18)
Test#3 (Generic, ZIP)
2.76k
9.32k (x3.37)
Test#1 (Memory)
4.93k
23.17k (x4.7)
TOTAL
27.1k
72.4k (x2.67)

Multithread

i7-6600U

3900
Test#1 (Integers)
14.11k
174.73k (x12.39)
Test#2 (FP)
20.05k
275.63k (x13.75)
Test#3 (Generic, ZIP)
6.17k
125.65k (x20.37)
Test#1 (Memory)
4.73k
44.17k (x9.35)
TOTAL
45.05k
620.18k (x13.77)

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
i7-6600U
3900
Test#1 (Integers)
16.72k
16.85k (x1.01)
Test#2 (FP)
14.7k
26.03k (x1.77)
Test#3 (Generic, ZIP)
3.4k
9.54k (x2.81)
Test#1 (Memory)
4.9k
22.55k (x4.6)
TOTAL
39.73k
74.97k (x1.89)

Multithread

i7-6600U

3900
Test#1 (Integers)
33.41k
229.41k (x6.87)
Test#2 (FP)
31.66k
292.81k (x9.25)
Test#3 (Generic, ZIP)
8.18k
128.48k (x15.7)
Test#1 (Memory)
5.97k
36.8k (x6.17)
TOTAL
79.22k
687.5k (x8.68)

Performance/W
i7-6600U
3900
Test#1 (Integers)
2227 points/W
3529 points/W
Test#2 (FP)
2111 points/W
4505 points/W
Test#3 (Generic, ZIP)
546 points/W
1977 points/W
Test#1 (Memory)
398 points/W
566 points/W
TOTAL
5282 points/W
10577 points/W

Performance/GHz
i7-6600U
3900
Test#1 (Integers)
4919 points/GHz
3920 points/GHz
Test#2 (FP)
4325 points/GHz
6054 points/GHz
Test#3 (Generic, ZIP)
999 points/GHz
2218 points/GHz
Test#1 (Memory)
1441 points/GHz
5243 points/GHz
TOTAL
11684 points/GHz
17435 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