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Celeron 3855U vs Pentium 4415U


Description
The 3855U is based on Skylake architecture while the 4415U is based on Kaby Lake.

Using the multithread performance as a reference, the 3855U gets a score of 24.6 k points while the 4415U gets 56.4 k points.

Summarizing, the 4415U is 2.3 times faster than the 3855U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
406e3
806e9
Core
Skylake-U
Kaby Lake-U
Architecture
Base frecuency
1.6 GHz
2.3 GHz
Socket
BGA1356
BGA1356
Cores/Threads
2/2
2/4
TDP
15 W
15 W
Cache L1 (d+i)
2x32+2x32 kB
2x32+2x32 kB
Cache L2
2x256 kB
2x256 kB
Cache L3
2096 kB
2048 kB
Date
December 2015
January 2017
Mean monothread perf.
19.24k points
27.39k points
Mean multithread perf.
24.56k points
56.39k 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
3855U
4415U
Test#1 (Integers)
1.64k
2.34k (x1.42)
Test#2 (FP)
6.72k
9.51k (x1.42)
Test#3 (Generic, ZIP)
2.06k
3.05k (x1.48)
Test#1 (Memory)
2.4k
2.59k (x1.08)
TOTAL
12.83k
17.49k (x1.36)

Multithread

3855U

4415U
Test#1 (Integers)
2.2k
4.71k (x2.15)
Test#2 (FP)
9.59k
21.73k (x2.27)
Test#3 (Generic, ZIP)
2.76k
7.35k (x2.66)
Test#1 (Memory)
2.27k
2.43k (x1.07)
TOTAL
16.81k
36.22k (x2.16)

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
3855U
4415U
Test#1 (Integers)
5.93k
8.29k (x1.4)
Test#2 (FP)
8.53k
11.82k (x1.39)
Test#3 (Generic, ZIP)
2.28k
3.09k (x1.36)
Test#1 (Memory)
2.5k
4.18k (x1.67)
TOTAL
19.24k
27.39k (x1.42)

Multithread

3855U

4415U
Test#1 (Integers)
7.87k
17.24k (x2.19)
Test#2 (FP)
11.28k
27.4k (x2.43)
Test#3 (Generic, ZIP)
2.91k
7.44k (x2.56)
Test#1 (Memory)
2.5k
4.31k (x1.73)
TOTAL
24.56k
56.39k (x2.3)

Performance/W
3855U
4415U
Test#1 (Integers)
524 points/W
1149 points/W
Test#2 (FP)
752 points/W
1827 points/W
Test#3 (Generic, ZIP)
194 points/W
496 points/W
Test#1 (Memory)
166 points/W
287 points/W
TOTAL
1637 points/W
3759 points/W

Performance/GHz
3855U
4415U
Test#1 (Integers)
3706 points/GHz
3605 points/GHz
Test#2 (FP)
5333 points/GHz
5140 points/GHz
Test#3 (Generic, ZIP)
1423 points/GHz
1344 points/GHz
Test#1 (Memory)
1562 points/GHz
1819 points/GHz
TOTAL
12024 points/GHz
11908 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