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Core i7-640LM vs A9 9420


Description
The i7-640LM is based on Westmere architecture while the 9420 is based on Excavator.

Using the multithread performance as a reference, the i7-640LM gets a score of 31.7 k points while the 9420 gets 28.9 k points.

Summarizing, the i7-640LM is 1.1 times faster than the 9420. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
20655
670f00
Core
Calpella
Stoney Ridge
Architecture
Base frecuency
2.133 GHz
3 GHz
Boost frecuency
2.667 GHz
3.6 GHz
Socket
BGA1288
Micro-BGA
Cores/Threads
2/4
2/2
TDP
25 W
15 W
Cache L1 (d+i)
2x32+2x32 kB
96+2x32 kB
Cache L2
2x256 kB
1024 kB
Cache L3
4096 kB
0 kB
Date
January 2010
April 2017
Mean monothread perf.
16.35k points
33.09k points
Mean multithread perf.
31.74k points
46.33k 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
9420
Test#1 (Integers)
7.01k
8.41k (x1.2)
Test#2 (FP)
4.58k
11.48k (x2.5)
Test#3 (Generic, ZIP)
2.73k
3.29k (x1.2)
Test#1 (Memory)
2.03k
2.24k (x1.1)
TOTAL
16.35k
25.41k (x1.55)

Multithread

i7-640LM

9420
Test#1 (Integers)
12.93k
11.25k (x0.87)
Test#2 (FP)
10.21k
13.69k (x1.34)
Test#3 (Generic, ZIP)
6.22k
2.09k (x0.34)
Test#1 (Memory)
2.37k
1.87k (x0.79)
TOTAL
31.74k
28.89k (x0.91)

Performance/W
i7-640LM
9420
Test#1 (Integers)
517 points/W
750 points/W
Test#2 (FP)
409 points/W
912 points/W
Test#3 (Generic, ZIP)
249 points/W
139 points/W
Test#1 (Memory)
95 points/W
125 points/W
TOTAL
1269 points/W
1926 points/W

Performance/GHz
i7-640LM
9420
Test#1 (Integers)
2627 points/GHz
2336 points/GHz
Test#2 (FP)
1718 points/GHz
3188 points/GHz
Test#3 (Generic, ZIP)
1024 points/GHz
913 points/GHz
Test#1 (Memory)
762 points/GHz
621 points/GHz
TOTAL
6130 points/GHz
7058 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