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Celeron 3855U vs Atom x5-Z8350


Description
The 3855U is based on Skylake architecture while the x5-Z8350 is based on Airmont.

Using the multithread performance as a reference, the 3855U gets a score of 24.6 k points while the x5-Z8350 gets 18 k points.

Summarizing, the 3855U is 1.4 times faster than the x5-Z8350. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
406e3
406c4
Core
Skylake-U
Cherry Trail
Architecture
Base frecuency
1.6 GHz
1.44 GHz
Boost frecuency
1.6 GHz
1.72 GHz
Socket
BGA1356
BGA592
Cores/Threads
2/2
4/4
TDP
15 W
2 W
Cache L1 (d+i)
2x32+2x32 kB
4x32+4x24 kB
Cache L2
2x256 kB
2x1024 kB
Cache L3
2096 kB
0 kB
Date
December 2015
February 2016
Mean monothread perf.
19.24k points
6.67k points
Mean multithread perf.
24.56k points
17.99k 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
x5-Z8350
Test#1 (Integers)
1.64k
0.86k (x0.53)
Test#2 (FP)
6.72k
1.39k (x0.21)
Test#3 (Generic, ZIP)
2.06k
1.21k (x0.59)
Test#1 (Memory)
2.4k
0.82k (x0.34)
TOTAL
12.83k
4.28k (x0.33)

Multithread

3855U

x5-Z8350
Test#1 (Integers)
2.2k
2.73k (x1.24)
Test#2 (FP)
9.59k
4.37k (x0.46)
Test#3 (Generic, ZIP)
2.76k
3.74k (x1.36)
Test#1 (Memory)
2.27k
1.02k (x0.45)
TOTAL
16.81k
11.85k (x0.71)

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
x5-Z8350
Test#1 (Integers)
5.93k
3.12k (x0.53)
Test#2 (FP)
8.53k
1.77k (x0.21)
Test#3 (Generic, ZIP)
2.28k
1.13k (x0.49)
Test#1 (Memory)
2.5k
0.66k (x0.26)
TOTAL
19.24k
6.67k (x0.35)

Multithread

3855U

x5-Z8350
Test#1 (Integers)
7.87k
8.49k (x1.08)
Test#2 (FP)
11.28k
5.26k (x0.47)
Test#3 (Generic, ZIP)
2.91k
3.3k (x1.13)
Test#1 (Memory)
2.5k
0.94k (x0.38)
TOTAL
24.56k
17.99k (x0.73)

Performance/W
3855U
x5-Z8350
Test#1 (Integers)
524 points/W
4246 points/W
Test#2 (FP)
752 points/W
2629 points/W
Test#3 (Generic, ZIP)
194 points/W
1649 points/W
Test#1 (Memory)
166 points/W
470 points/W
TOTAL
1637 points/W
8995 points/W

Performance/GHz
3855U
x5-Z8350
Test#1 (Integers)
3706 points/GHz
1812 points/GHz
Test#2 (FP)
5333 points/GHz
1031 points/GHz
Test#3 (Generic, ZIP)
1423 points/GHz
655 points/GHz
Test#1 (Memory)
1562 points/GHz
382 points/GHz
TOTAL
12024 points/GHz
3880 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