Celeron 3855U vs Core i7-6600U
Description
Both models 3855U and i7-6600U 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 3855U gets a score of 24.6 k points while the i7-6600U gets 48.2 k points.
Summarizing, the i7-6600U is 2 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 3855U gets a score of 24.6 k points while the i7-6600U gets 48.2 k points.
Summarizing, the i7-6600U is 2 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
1.6 GHz
2.6 GHz
Boost frecuency
1.6 GHz
3.4 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
4096 kB
Date
December 2015
September 2015
Mean monothread perf.
19.24k points
39.73k points
Mean multithread perf.
24.56k points
79.22k 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
i7-6600U
Test#1 (Integers)
1.64k
2.75k (x1.67)
Test#2 (FP)
6.72k
12.23k (x1.82)
Test#3 (Generic, ZIP)
2.06k
3.9k (x1.89)
Test#1 (Memory)
2.4k
5.61k (x2.33)
TOTAL
12.83k
24.48k (x1.91)
Multithread
3855U
i7-6600U
Test#1 (Integers)
2.2k
5.23k (x2.38)
Test#2 (FP)
9.59k
25k (x2.61)
Test#3 (Generic, ZIP)
2.76k
8.98k (x3.26)
Test#1 (Memory)
2.27k
4.73k (x2.09)
TOTAL
16.81k
43.95k (x2.61)
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
i7-6600U
Test#1 (Integers)
5.93k
6.76k (x1.14)
Test#2 (FP)
8.53k
9.58k (x1.12)
Test#3 (Generic, ZIP)
2.28k
2.46k (x1.08)
Test#1 (Memory)
2.5k
4.18k (x1.67)
TOTAL
19.24k
22.99k (x1.19)
Multithread
3855U
i7-6600U
Test#1 (Integers)
7.87k
14.37k (x1.83)
Test#2 (FP)
11.28k
23.79k (x2.11)
Test#3 (Generic, ZIP)
2.91k
5.71k (x1.96)
Test#1 (Memory)
2.5k
4.29k (x1.72)
TOTAL
24.56k
48.16k (x1.96)
Performance/W
3855U
i7-6600U
Test#1 (Integers)
524 points/W
958 points/W
Test#2 (FP)
752 points/W
1586 points/W
Test#3 (Generic, ZIP)
194 points/W
380 points/W
Test#1 (Memory)
166 points/W
286 points/W
TOTAL
1637 points/W
3211 points/W
Performance/GHz
3855U
i7-6600U
Test#1 (Integers)
3706 points/GHz
1989 points/GHz
Test#2 (FP)
5333 points/GHz
2818 points/GHz
Test#3 (Generic, ZIP)
1423 points/GHz
724 points/GHz
Test#1 (Memory)
1562 points/GHz
1229 points/GHz
TOTAL
12024 points/GHz
6761 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