Celeron 3855U vs Core i7-920
Description
The 3855U is based on Skylake architecture while the i7-920 is based on Nehalem Westmere.
Using the multithread performance as a reference, the 3855U gets a score of 24.6 k points while the i7-920 gets 47.2 k points.
Summarizing, the i7-920 is 1.9 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 i7-920 gets 47.2 k points.
Summarizing, the i7-920 is 1.9 times faster than the 3855U. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
406e3
106a5
Core
Skylake-U
Bloomfield
Base frecuency
1.6 GHz
2.667 GHz
Boost frecuency
1.6 GHz
2.993 GHz
Socket
BGA1356
LGA 1366
Cores/Threads
2/2
4/8
TDP
15 W
130 W
Cache L1 (d+i)
2x32+2x32 kB
32+32 kB
Cache L2
2x256 kB
256 kB
Cache L3
2096 kB
8192 kB
Date
December 2015
November 2008
Mean monothread perf.
19.24k points
16.33k points
Mean multithread perf.
24.56k points
47.2k 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
i7-920
Test#1 (Integers)
1.64k
1.97k (x1.2)
Test#2 (FP)
6.72k
4.43k (x0.66)
Test#3 (Generic, ZIP)
2.06k
2.75k (x1.33)
Test#1 (Memory)
2.4k
2.53k (x1.05)
TOTAL
12.83k
11.68k (x0.91)
Multithread
3855U
i7-920
Test#1 (Integers)
2.2k
7.71k (x3.51)
Test#2 (FP)
9.59k
18.81k (x1.96)
Test#3 (Generic, ZIP)
2.76k
13.76k (x4.99)
Test#1 (Memory)
2.27k
5.07k (x2.23)
TOTAL
16.81k
45.34k (x2.7)
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
i7-920
Test#1 (Integers)
5.93k
6.12k (x1.03)
Test#2 (FP)
8.53k
4.76k (x0.56)
Test#3 (Generic, ZIP)
2.28k
2.78k (x1.22)
Test#1 (Memory)
2.5k
2.67k (x1.07)
TOTAL
19.24k
16.33k (x0.85)
Multithread
3855U
i7-920
Test#1 (Integers)
7.87k
19.26k (x2.45)
Test#2 (FP)
11.28k
14.96k (x1.33)
Test#3 (Generic, ZIP)
2.91k
8.05k (x2.77)
Test#1 (Memory)
2.5k
4.92k (x1.97)
TOTAL
24.56k
47.2k (x1.92)
Performance/W
3855U
i7-920
Test#1 (Integers)
524 points/W
148 points/W
Test#2 (FP)
752 points/W
115 points/W
Test#3 (Generic, ZIP)
194 points/W
62 points/W
Test#1 (Memory)
166 points/W
38 points/W
TOTAL
1637 points/W
363 points/W
Performance/GHz
3855U
i7-920
Test#1 (Integers)
3706 points/GHz
2044 points/GHz
Test#2 (FP)
5333 points/GHz
1591 points/GHz
Test#3 (Generic, ZIP)
1423 points/GHz
930 points/GHz
Test#1 (Memory)
1562 points/GHz
891 points/GHz
TOTAL
12024 points/GHz
5457 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