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Core i7-640LM vs Celeron N3450


Description
The i7-640LM is based on Westmere architecture while the N3450 is based on Goldmont.

Using the multithread performance as a reference, the i7-640LM gets a score of 31.7 k points while the N3450 gets 39.3 k points.

Summarizing, the N3450 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
506c9
Core
Calpella
Apollo Lake
Architecture
Base frecuency
2.133 GHz
1.1 GHz
Boost frecuency
2.667 GHz
2.2 GHz
Socket
BGA1288
BGA1296
Cores/Threads
2/4
4/4
TDP
25 W
6 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
August 2016
Mean monothread perf.
16.35k points
13.11k points
Mean multithread perf.
31.74k points
39.33k 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
N3450
Test#1 (Integers)
7.01k
5.95k (x0.85)
Test#2 (FP)
4.58k
3.45k (x0.75)
Test#3 (Generic, ZIP)
2.73k
1.92k (x0.7)
Test#1 (Memory)
2.03k
1.78k (x0.88)
TOTAL
16.35k
13.11k (x0.8)

Multithread

i7-640LM

N3450
Test#1 (Integers)
12.93k
21.38k (x1.65)
Test#2 (FP)
10.21k
9.84k (x0.96)
Test#3 (Generic, ZIP)
6.22k
5.25k (x0.84)
Test#1 (Memory)
2.37k
2.86k (x1.21)
TOTAL
31.74k
39.33k (x1.24)

Performance/W
i7-640LM
N3450
Test#1 (Integers)
517 points/W
3564 points/W
Test#2 (FP)
409 points/W
1640 points/W
Test#3 (Generic, ZIP)
249 points/W
875 points/W
Test#1 (Memory)
95 points/W
477 points/W
TOTAL
1269 points/W
6555 points/W

Performance/GHz
i7-640LM
N3450
Test#1 (Integers)
2627 points/GHz
2706 points/GHz
Test#2 (FP)
1718 points/GHz
1570 points/GHz
Test#3 (Generic, ZIP)
1024 points/GHz
874 points/GHz
Test#1 (Memory)
762 points/GHz
810 points/GHz
TOTAL
6130 points/GHz
5959 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