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Core i7-640LM vs Celeron J4105


Description
The i7-640LM is based on Westmere architecture while the J4105 is based on Goldmont Plus.

Using the multithread performance as a reference, the i7-640LM gets a score of 31.7 k points while the J4105 gets 61.5 k points.

Summarizing, the J4105 is 1.9 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
706a1
Core
Calpella
Gemini Lake
Architecture
Base frecuency
2.133 GHz
1.5 GHz
Boost frecuency
2.667 GHz
2.5 GHz
Socket
BGA1288
BGA 1090
Cores/Threads
2/4
4/4
TDP
25 W
10 W
Cache L1 (d+i)
2x32+2x32 kB
4x32+4x24 kB
Cache L2
2x256 kB
4096 kB
Cache L3
4096 kB
0 kB
Date
January 2010
December 2017
Mean monothread perf.
16.35k points
18.22k points
Mean multithread perf.
31.74k points
61.49k 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
J4105
Test#1 (Integers)
7.01k
4.9k (x0.7)
Test#2 (FP)
4.58k
7.26k (x1.58)
Test#3 (Generic, ZIP)
2.73k
2.75k (x1.01)
Test#1 (Memory)
2.03k
3.32k (x1.63)
TOTAL
16.35k
18.22k (x1.11)

Multithread

i7-640LM

J4105
Test#1 (Integers)
12.93k
18.84k (x1.46)
Test#2 (FP)
10.21k
27.45k (x2.69)
Test#3 (Generic, ZIP)
6.22k
10.35k (x1.66)
Test#1 (Memory)
2.37k
4.85k (x2.05)
TOTAL
31.74k
61.49k (x1.94)

Performance/W
i7-640LM
J4105
Test#1 (Integers)
517 points/W
1884 points/W
Test#2 (FP)
409 points/W
2745 points/W
Test#3 (Generic, ZIP)
249 points/W
1035 points/W
Test#1 (Memory)
95 points/W
485 points/W
TOTAL
1269 points/W
6149 points/W

Performance/GHz
i7-640LM
J4105
Test#1 (Integers)
2627 points/GHz
1958 points/GHz
Test#2 (FP)
1718 points/GHz
2902 points/GHz
Test#3 (Generic, ZIP)
1024 points/GHz
1102 points/GHz
Test#1 (Memory)
762 points/GHz
1327 points/GHz
TOTAL
6130 points/GHz
7289 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