Core i7-640LM vs Pentium 4405U
Description
The i7-640LM is based on Westmere architecture while the 4405U is based on Skylake.
Using the multithread performance as a reference, the i7-640LM gets a score of 31.7 k points while the 4405U gets 51.1 k points.
Summarizing, the 4405U is 1.6 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 4405U gets 51.1 k points.
Summarizing, the 4405U is 1.6 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
406e3
Core
Calpella
Skylake-U
Base frecuency
2.133 GHz
2.1 GHz
Boost frecuency
2.667 GHz
2.1 GHz
Socket
BGA1288
BGA 1356
Cores/Threads
2/4
2/4
TDP
25 W
15 W
Cache L1 (d+i)
2x32+2x32 kB
2x32+2x32 kB
Cache L2
2x256 kB
2x256 kB
Cache L3
4096 kB
2048 kB
Date
January 2010
Mean monothread perf.
16.35k points
23.33k points
Mean multithread perf.
31.74k points
51.1k 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
4405U
Test#1 (Integers)
7.01k
7.45k (x1.06)
Test#2 (FP)
4.58k
10.51k (x2.3)
Test#3 (Generic, ZIP)
2.73k
2.78k (x1.02)
Test#1 (Memory)
2.03k
2.59k (x1.27)
TOTAL
16.35k
23.33k (x1.43)
Multithread
i7-640LM
4405U
Test#1 (Integers)
12.93k
16.1k (x1.24)
Test#2 (FP)
10.21k
25.44k (x2.49)
Test#3 (Generic, ZIP)
6.22k
6.99k (x1.12)
Test#1 (Memory)
2.37k
2.58k (x1.09)
TOTAL
31.74k
51.1k (x1.61)
Performance/W
i7-640LM
4405U
Test#1 (Integers)
517 points/W
1073 points/W
Test#2 (FP)
409 points/W
1696 points/W
Test#3 (Generic, ZIP)
249 points/W
466 points/W
Test#1 (Memory)
95 points/W
172 points/W
TOTAL
1269 points/W
3407 points/W
Performance/GHz
i7-640LM
4405U
Test#1 (Integers)
2627 points/GHz
3547 points/GHz
Test#2 (FP)
1718 points/GHz
5007 points/GHz
Test#3 (Generic, ZIP)
1024 points/GHz
1324 points/GHz
Test#1 (Memory)
762 points/GHz
1232 points/GHz
TOTAL
6130 points/GHz
11109 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