Core i7-720QM vs i7-640LM
Description
The i7-720QM is based on Nehalem architecture while the i7-640LM is based on Westmere.
Using the multithread performance as a reference, the i7-720QM gets a score of 38.8 k points while the i7-640LM gets 31.7 k points.
Summarizing, the i7-720QM 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.
Using the multithread performance as a reference, the i7-720QM gets a score of 38.8 k points while the i7-640LM gets 31.7 k points.
Summarizing, the i7-720QM 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
106e5
20655
Core
Clarksfield
Calpella
Base frecuency
1.6 GHz
2.133 GHz
Boost frecuency
2.8 GHz
2.667 GHz
Socket
988-pin micro-FCPGA8
BGA1288
Cores/Threads
4/8
2/4
TDP
45 W
25 W
Cache L1 (d+i)
4x32+4x32 kB
2x32+2x32 kB
Cache L2
4x256 kB
2x256 kB
Cache L3
6144 kB
4096 kB
Date
September 2009
January 2010
Mean monothread perf.
13.13k points
16.35k points
Mean multithread perf.
38.78k points
31.74k 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
i7-720QM
i7-640LM
Test#1 (Integers)
5.49k
7.01k (x1.28)
Test#2 (FP)
3.55k
4.58k (x1.29)
Test#3 (Generic, ZIP)
2.01k
2.73k (x1.36)
Test#1 (Memory)
2.09k
2.03k (x0.97)
TOTAL
13.13k
16.35k (x1.24)
Multithread
i7-720QM
i7-640LM
Test#1 (Integers)
15.06k
12.93k (x0.86)
Test#2 (FP)
12.15k
10.21k (x0.84)
Test#3 (Generic, ZIP)
7.18k
6.22k (x0.87)
Test#1 (Memory)
4.39k
2.37k (x0.54)
TOTAL
38.78k
31.74k (x0.82)
Performance/W
i7-720QM
i7-640LM
Test#1 (Integers)
335 points/W
517 points/W
Test#2 (FP)
270 points/W
409 points/W
Test#3 (Generic, ZIP)
160 points/W
249 points/W
Test#1 (Memory)
98 points/W
95 points/W
TOTAL
862 points/W
1269 points/W
Performance/GHz
i7-720QM
i7-640LM
Test#1 (Integers)
1962 points/GHz
2627 points/GHz
Test#2 (FP)
1267 points/GHz
1718 points/GHz
Test#3 (Generic, ZIP)
717 points/GHz
1024 points/GHz
Test#1 (Memory)
745 points/GHz
762 points/GHz
TOTAL
4691 points/GHz
6130 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