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Core i7-640LM vs i3-4030U


Description
The i7-640LM is based on Westmere architecture while the i3-4030U is based on Haswell.

Using the multithread performance as a reference, the i7-640LM gets a score of 31.7 k points while the i3-4030U gets 36.7 k points.

Summarizing, the i3-4030U 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
40651
Core
Calpella
Haswell
Architecture
Base frecuency
2.133 GHz
1.9 GHz
Boost frecuency
2.667 GHz
1.9 GHz
Socket
BGA1288
BGA1168
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
3072 kB
Date
January 2010
April 2014
Mean monothread perf.
16.35k points
21.57k points
Mean multithread perf.
31.74k points
46.09k 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
i3-4030U
Test#1 (Integers)
7.01k
6.7k (x0.96)
Test#2 (FP)
4.58k
5.99k (x1.31)
Test#3 (Generic, ZIP)
2.73k
2.65k (x0.97)
Test#1 (Memory)
2.03k
2.13k (x1.05)
TOTAL
16.35k
17.47k (x1.07)

Multithread

i7-640LM

i3-4030U
Test#1 (Integers)
12.93k
14.3k (x1.11)
Test#2 (FP)
10.21k
13.83k (x1.35)
Test#3 (Generic, ZIP)
6.22k
6.12k (x0.98)
Test#1 (Memory)
2.37k
2.48k (x1.05)
TOTAL
31.74k
36.74k (x1.16)

Performance/W
i7-640LM
i3-4030U
Test#1 (Integers)
517 points/W
953 points/W
Test#2 (FP)
409 points/W
922 points/W
Test#3 (Generic, ZIP)
249 points/W
408 points/W
Test#1 (Memory)
95 points/W
166 points/W
TOTAL
1269 points/W
2449 points/W

Performance/GHz
i7-640LM
i3-4030U
Test#1 (Integers)
2627 points/GHz
3525 points/GHz
Test#2 (FP)
1718 points/GHz
3150 points/GHz
Test#3 (Generic, ZIP)
1024 points/GHz
1395 points/GHz
Test#1 (Memory)
762 points/GHz
1122 points/GHz
TOTAL
6130 points/GHz
9193 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