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Core i5-450M vs Celeron 3855U


Description
The i5-450M is based on Westmere architecture while the 3855U is based on Skylake.

Using the multithread performance as a reference, the i5-450M gets a score of 29.1 k points while the 3855U gets 24.6 k points.

Summarizing, the i5-450M is 1.2 times faster than the 3855U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
20655
406e3
Core
Arrandale
Skylake-U
Architecture
Base frecuency
2.4 GHz
1.6 GHz
Boost frecuency
2.667 GHz
1.6 GHz
Socket
Socket G1
BGA1356
Cores/Threads
2/4
2/2
TDP
35 W
15 W
Cache L1 (d+i)
2x32+2x32 kB
2x32+2x32 kB
Cache L2
2x256 kB
2x256 kB
Cache L3
3072 kB
2096 kB
Date
June 2010
December 2015
Mean monothread perf.
12.93k points
19.24k points
Mean multithread perf.
29.1k points
24.56k 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
i5-450M
3855U
Test#1 (Integers)
1.61k
1.64k (x1.02)
Test#2 (FP)
3.8k
6.72k (x1.77)
Test#3 (Generic, ZIP)
2.19k
2.06k (x0.94)
Test#1 (Memory)
1.65k
2.4k (x1.46)
TOTAL
9.25k
12.83k (x1.39)

Multithread

i5-450M

3855U
Test#1 (Integers)
2.91k
2.2k (x0.75)
Test#2 (FP)
5.05k
9.59k (x1.9)
Test#3 (Generic, ZIP)
3.28k
2.76k (x0.84)
Test#1 (Memory)
3.07k
2.27k (x0.74)
TOTAL
14.31k
16.81k (x1.17)

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
i5-450M
3855U
Test#1 (Integers)
5.4k
5.93k (x1.1)
Test#2 (FP)
3.7k
8.53k (x2.3)
Test#3 (Generic, ZIP)
2.06k
2.28k (x1.11)
Test#1 (Memory)
1.77k
2.5k (x1.41)
TOTAL
12.93k
19.24k (x1.49)

Multithread

i5-450M

3855U
Test#1 (Integers)
11.83k
7.87k (x0.67)
Test#2 (FP)
9.39k
11.28k (x1.2)
Test#3 (Generic, ZIP)
5.31k
2.91k (x0.55)
Test#1 (Memory)
2.58k
2.5k (x0.97)
TOTAL
29.1k
24.56k (x0.84)

Performance/W
i5-450M
3855U
Test#1 (Integers)
338 points/W
524 points/W
Test#2 (FP)
268 points/W
752 points/W
Test#3 (Generic, ZIP)
152 points/W
194 points/W
Test#1 (Memory)
74 points/W
166 points/W
TOTAL
831 points/W
1637 points/W

Performance/GHz
i5-450M
3855U
Test#1 (Integers)
2024 points/GHz
3706 points/GHz
Test#2 (FP)
1388 points/GHz
5333 points/GHz
Test#3 (Generic, ZIP)
772 points/GHz
1423 points/GHz
Test#1 (Memory)
665 points/GHz
1562 points/GHz
TOTAL
4850 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. 3.11.4