Celeron 3855U vs N2840
Description
The 3855U is based on Skylake architecture while the N2840 is based on Silvermont.
Using the multithread performance as a reference, the 3855U gets a score of 24.6 k points while the N2840 gets 16.8 k points.
Summarizing, the 3855U is 1.5 times faster than the N2840. To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the 3855U gets a score of 24.6 k points while the N2840 gets 16.8 k points.
Summarizing, the 3855U is 1.5 times faster than the N2840. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
406e3
30678
Core
Skylake-U
Bay Trail-M
Base frecuency
1.6 GHz
2.167 GHz
Boost frecuency
1.6 GHz
2.58 GHz
Socket
BGA1356
BGA1170
Cores/Threads
2/2
2/2
TDP
15 W
7,5 W
Cache L1 (d+i)
2x32+2x32 kB
2x32+2x24 kB
Cache L2
2x256 kB
1024 kB
Cache L3
2096 kB
0 kB
Date
December 2015
July 2014
Mean monothread perf.
19.24k points
10.36k points
Mean multithread perf.
24.56k points
16.79k 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
3855U
N2840
Test#1 (Integers)
5.93k
4.8k (x0.81)
Test#2 (FP)
8.53k
2.47k (x0.29)
Test#3 (Generic, ZIP)
2.28k
1.86k (x0.82)
Test#1 (Memory)
2.5k
1.22k (x0.49)
TOTAL
19.24k
10.36k (x0.54)
Multithread
3855U
N2840
Test#1 (Integers)
7.87k
8.24k (x1.05)
Test#2 (FP)
11.28k
4.19k (x0.37)
Test#3 (Generic, ZIP)
2.91k
3.05k (x1.05)
Test#1 (Memory)
2.5k
1.32k (x0.53)
TOTAL
24.56k
16.79k (x0.68)
Performance/W
3855U
N2840
Test#1 (Integers)
524 points/W
1177 points/W
Test#2 (FP)
752 points/W
598 points/W
Test#3 (Generic, ZIP)
194 points/W
436 points/W
Test#1 (Memory)
166 points/W
188 points/W
TOTAL
1637 points/W
2399 points/W
Performance/GHz
3855U
N2840
Test#1 (Integers)
3706 points/GHz
1861 points/GHz
Test#2 (FP)
5333 points/GHz
958 points/GHz
Test#3 (Generic, ZIP)
1423 points/GHz
723 points/GHz
Test#1 (Memory)
1562 points/GHz
472 points/GHz
TOTAL
12024 points/GHz
4015 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