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Celeron N2840 vs Core i5-520M


Description
The N2840 is based on Silvermont architecture while the i5-520M is based on Westmere.

Using the multithread performance as a reference, the N2840 gets a score of 16.8 k points while the i5-520M gets 26.3 k points.

Summarizing, the i5-520M is 1.6 times faster than the N2840. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
30678
20655
Core
Bay Trail-M
Arrandale
Architecture
Base frecuency
2.167 GHz
2.4 GHz
Boost frecuency
2.58 GHz
2.933 GHz
Socket
BGA1170
FC-PGA 988
Cores/Threads
2/2
2/4
TDP
7,5 W
35 W
Cache L1 (d+i)
2x32+2x24 kB
2x32+2x32 kB
Cache L2
1024 kB
2x256 kB
Cache L3
0 kB
3072 kB
Date
July 2014
January 2010
Mean monothread perf.
10.36k points
13.1k points
Mean multithread perf.
16.79k points
26.27k points

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
N2840
i5-520M
Test#1 (Integers)
4.8k
5.41k (x1.13)
Test#2 (FP)
2.47k
3.69k (x1.49)
Test#3 (Generic, ZIP)
1.86k
2.12k (x1.14)
Test#1 (Memory)
1.22k
1.88k (x1.54)
TOTAL
10.36k
13.1k (x1.26)

Multithread

N2840

i5-520M
Test#1 (Integers)
8.24k
10.7k (x1.3)
Test#2 (FP)
4.19k
7.91k (x1.89)
Test#3 (Generic, ZIP)
3.05k
5.08k (x1.67)
Test#1 (Memory)
1.32k
2.58k (x1.96)
TOTAL
16.79k
26.27k (x1.56)

Performance/W
N2840
i5-520M
Test#1 (Integers)
1177 points/W
306 points/W
Test#2 (FP)
598 points/W
226 points/W
Test#3 (Generic, ZIP)
436 points/W
145 points/W
Test#1 (Memory)
188 points/W
74 points/W
TOTAL
2399 points/W
751 points/W

Performance/GHz
N2840
i5-520M
Test#1 (Integers)
1861 points/GHz
1844 points/GHz
Test#2 (FP)
958 points/GHz
1259 points/GHz
Test#3 (Generic, ZIP)
723 points/GHz
723 points/GHz
Test#1 (Memory)
472 points/GHz
641 points/GHz
TOTAL
4015 points/GHz
4466 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