Pentium 4405U vs Celeron 3855U
Description
Both models 4405U and 3855U are based on Skylake architecture.
Sky Lake is also known as 6th generation Core. Include Thunderbolt 3.0, SATA Express and Iris Pro graphics with DirectX 12. It uses LGA 1151 socket for mainstream models and LGA 2066 for X-Series. Sky Lake comes with AVX2 support in all mainstreams CPUs and AVX-512 in some high end models.
Using the multithread performance as a reference, the 4405U gets a score of 51.1 k points while the 3855U gets 24.6 k points.
Summarizing, the 4405U is 2.1 times faster than the 3855U. To get a proper comparison between both models, take a look to the data shown below.
Sky Lake is also known as 6th generation Core. Include Thunderbolt 3.0, SATA Express and Iris Pro graphics with DirectX 12. It uses LGA 1151 socket for mainstream models and LGA 2066 for X-Series. Sky Lake comes with AVX2 support in all mainstreams CPUs and AVX-512 in some high end models.
Using the multithread performance as a reference, the 4405U gets a score of 51.1 k points while the 3855U gets 24.6 k points.
Summarizing, the 4405U is 2.1 times faster than the 3855U. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
406e3
406e3
Core
Skylake-U
Skylake-U
Base frecuency
2.1 GHz
1.6 GHz
Socket
BGA 1356
BGA1356
Cores/Threads
2/4
2/2
TDP
15 W
15 W
Cache L1 (d+i)
2x32+2x32 kB
2x32+2x32 kB
Cache L2
2x256 kB
2x256 kB
Cache L3
2048 kB
2096 kB
Date
December 2015
Mean monothread perf.
23.33k points
19.24k points
Mean multithread perf.
51.1k points
24.56k points
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
4405U
3855U
Test#1 (Integers)
7.45k
5.93k (x0.8)
Test#2 (FP)
10.51k
8.53k (x0.81)
Test#3 (Generic, ZIP)
2.78k
2.28k (x0.82)
Test#1 (Memory)
2.59k
2.5k (x0.97)
TOTAL
23.33k
19.24k (x0.82)
Multithread
4405U
3855U
Test#1 (Integers)
16.1k
7.87k (x0.49)
Test#2 (FP)
25.44k
11.28k (x0.44)
Test#3 (Generic, ZIP)
6.99k
2.91k (x0.42)
Test#1 (Memory)
2.58k
2.5k (x0.97)
TOTAL
51.1k
24.56k (x0.48)
Performance/W
4405U
3855U
Test#1 (Integers)
1073 points/W
524 points/W
Test#2 (FP)
1696 points/W
752 points/W
Test#3 (Generic, ZIP)
466 points/W
194 points/W
Test#1 (Memory)
172 points/W
166 points/W
TOTAL
3407 points/W
1637 points/W
Performance/GHz
4405U
3855U
Test#1 (Integers)
3547 points/GHz
3706 points/GHz
Test#2 (FP)
5007 points/GHz
5333 points/GHz
Test#3 (Generic, ZIP)
1324 points/GHz
1423 points/GHz
Test#1 (Memory)
1232 points/GHz
1562 points/GHz
TOTAL
11109 points/GHz
12024 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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Hardlimit Benchmark Central - Ver. 3.11.4