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Celeron J4105 vs 3855U


Description
The J4105 is based on Goldmont Plus architecture while the 3855U is based on Skylake.

Using the multithread performance as a reference, the J4105 gets a score of 61.5 k points while the 3855U gets 24.6 k points.

Summarizing, the J4105 is 2.5 times faster than the 3855U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
706a1
406e3
Core
Gemini Lake
Skylake-U
Architecture
Base frecuency
1.5 GHz
1.6 GHz
Boost frecuency
2.5 GHz
1.6 GHz
Socket
BGA 1090
BGA1356
Cores/Threads
4/4
2/2
TDP
10 W
15 W
Cache L1 (d+i)
4x32+4x24 kB
2x32+2x32 kB
Cache L2
4096 kB
2x256 kB
Cache L3
0 kB
2096 kB
Date
December 2017
December 2015

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
J4105
3855U
Test#1 (Integers)
1683
1643 (-2.34%)
Test#2 (FP)
5290
6721 (27.05%)
Test#3 (Generic, ZIP)
2749
2063 (-24.94%)
Test#1 (Memory)
3443
2404 (-30.20%)
TOTAL
13165
12831 (-2.53%)

Multithread

J4105

3855U
Test#1 (Integers)
6391
2196 (-65.64%)
Test#2 (FP)
20018
9586 (-52.11%)
Test#3 (Generic, ZIP)
10222
2758 (-73.02%)
Test#1 (Memory)
4941
2270 (-54.06%)
TOTAL
41572
16809 (-59.57%)

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
J4105
3855U
Test#1 (Integers)
4896
5930 (21.13%)
Test#2 (FP)
7255
8533 (17.60%)
Test#3 (Generic, ZIP)
2754
2277 (-17.34%)
Test#1 (Memory)
3317
2499 (-24.66%)
TOTAL
18223
19239 (5.58%)

Multithread

J4105

3855U
Test#1 (Integers)
18843
7867 (-58.25%)
Test#2 (FP)
27446
11283 (-58.89%)
Test#3 (Generic, ZIP)
10353
2910 (-71.89%)
Test#1 (Memory)
4853
2496 (-48.57%)
TOTAL
61495
24556 (-60.07%)

Performance/W
J4105
3855U
Test#1 (Integers)
1884 points/W
524 points/W
Test#2 (FP)
2745 points/W
752 points/W
Test#3 (Generic, ZIP)
1035 points/W
194 points/W
Test#1 (Memory)
485 points/W
166 points/W
TOTAL
6149 points/W
1637 points/W

Performance/GHz
J4105
3855U
Test#1 (Integers)
1958 points/GHz
3706 points/GHz
Test#2 (FP)
2902 points/GHz
5333 points/GHz
Test#3 (Generic, ZIP)
1102 points/GHz
1423 points/GHz
Test#1 (Memory)
1327 points/GHz
1562 points/GHz
TOTAL
7289 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.


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. 3.7.8