Core i7-640LM vs Pentium N3540
Description
The i7-640LM is based on Westmere architecture while the N3540 is based on Silvermont.
Using the multithread performance as a reference, the i7-640LM gets a score of 31.7 k points while the N3540 gets 37.5 k points.
Summarizing, the N3540 is 1.2 times faster than the i7-640LM. To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i7-640LM gets a score of 31.7 k points while the N3540 gets 37.5 k points.
Summarizing, the N3540 is 1.2 times faster than the i7-640LM. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
20655
30678
Core
Calpella
Bay Trail-M
Base frecuency
2.133 GHz
2.167 GHz
Boost frecuency
2.667 GHz
2.667 GHz
Socket
BGA1288
BGA1170
Cores/Threads
2/4
4/4
TDP
25 W
7,5 W
Cache L1 (d+i)
2x32+2x32 kB
4x32+4x24 kB
Cache L2
2x256 kB
2x1024 kB
Cache L3
4096 kB
kB
Date
January 2010
July 2014
Mean monothread perf.
16.35k points
10.72k points
Mean multithread perf.
31.74k points
37.5k 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
i7-640LM
N3540
Test#1 (Integers)
7.01k
4.97k (x0.71)
Test#2 (FP)
4.58k
2.58k (x0.56)
Test#3 (Generic, ZIP)
2.73k
1.98k (x0.72)
Test#1 (Memory)
2.03k
1.2k (x0.59)
TOTAL
16.35k
10.72k (x0.66)
Multithread
i7-640LM
N3540
Test#1 (Integers)
12.93k
18.92k (x1.46)
Test#2 (FP)
10.21k
9.67k (x0.95)
Test#3 (Generic, ZIP)
6.22k
7.37k (x1.18)
Test#1 (Memory)
2.37k
1.54k (x0.65)
TOTAL
31.74k
37.5k (x1.18)
Performance/W
i7-640LM
N3540
Test#1 (Integers)
517 points/W
2703 points/W
Test#2 (FP)
409 points/W
1382 points/W
Test#3 (Generic, ZIP)
249 points/W
1053 points/W
Test#1 (Memory)
95 points/W
220 points/W
TOTAL
1269 points/W
5357 points/W
Performance/GHz
i7-640LM
N3540
Test#1 (Integers)
2627 points/GHz
1864 points/GHz
Test#2 (FP)
1718 points/GHz
967 points/GHz
Test#3 (Generic, ZIP)
1024 points/GHz
741 points/GHz
Test#1 (Memory)
762 points/GHz
448 points/GHz
TOTAL
6130 points/GHz
4020 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