Celeron 3855U vs Core i7-870
Description
The 3855U is based on Skylake architecture while the i7-870 is based on Nehalem.
Using the multithread performance as a reference, the 3855U gets a score of 24.6 k points while the i7-870 gets 42.5 k points.
Summarizing, the i7-870 is 1.7 times faster than the 3855U. 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 i7-870 gets 42.5 k points.
Summarizing, the i7-870 is 1.7 times faster than the 3855U. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
406e3
106e5
Core
Skylake-U
Lynnfield
Base frecuency
1.6 GHz
2.933 GHz
Boost frecuency
1.6 GHz
3.6 GHz
Socket
BGA1356
LGA 1156
Cores/Threads
2/2
4/8
TDP
15 W
95 W
Cache L1 (d+i)
2x32+2x32 kB
4x32+4x32 kB
Cache L2
2x256 kB
4x256 kB
Cache L3
2096 kB
8192 kB
Date
December 2015
September 2009
Mean monothread perf.
19.24k points
15.44k points
Mean multithread perf.
24.56k points
42.53k 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
i7-870
Test#1 (Integers)
1.64k
1.98k (x1.21)
Test#2 (FP)
6.72k
4.36k (x0.65)
Test#3 (Generic, ZIP)
2.06k
2.24k (x1.09)
Test#1 (Memory)
2.4k
2.72k (x1.13)
TOTAL
12.83k
11.3k (x0.88)
Multithread
3855U
i7-870
Test#1 (Integers)
2.2k
4.46k (x2.03)
Test#2 (FP)
9.59k
13.95k (x1.46)
Test#3 (Generic, ZIP)
2.76k
7.54k (x2.73)
Test#1 (Memory)
2.27k
1.7k (x0.75)
TOTAL
16.81k
27.65k (x1.64)
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
i7-870
Test#1 (Integers)
5.93k
5.86k (x0.99)
Test#2 (FP)
8.53k
4.53k (x0.53)
Test#3 (Generic, ZIP)
2.28k
2.36k (x1.03)
Test#1 (Memory)
2.5k
2.69k (x1.08)
TOTAL
19.24k
15.44k (x0.8)
Multithread
3855U
i7-870
Test#1 (Integers)
7.87k
17.53k (x2.23)
Test#2 (FP)
11.28k
13.65k (x1.21)
Test#3 (Generic, ZIP)
2.91k
7.93k (x2.73)
Test#1 (Memory)
2.5k
3.41k (x1.37)
TOTAL
24.56k
42.53k (x1.73)
Performance/W
3855U
i7-870
Test#1 (Integers)
524 points/W
185 points/W
Test#2 (FP)
752 points/W
144 points/W
Test#3 (Generic, ZIP)
194 points/W
83 points/W
Test#1 (Memory)
166 points/W
36 points/W
TOTAL
1637 points/W
448 points/W
Performance/GHz
3855U
i7-870
Test#1 (Integers)
3706 points/GHz
1629 points/GHz
Test#2 (FP)
5333 points/GHz
1257 points/GHz
Test#3 (Generic, ZIP)
1423 points/GHz
655 points/GHz
Test#1 (Memory)
1562 points/GHz
748 points/GHz
TOTAL
12024 points/GHz
4289 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