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Intel i7-640LM vs i5-520M

The Intel Core i7-640LM @ 2.13GHz is newer than Intel Core i5-520M @ 2.40GHz and is around -12% slower in multi-threaded (CPU Mark) testing. However the CPUs have comparable single-thread rating. Also, Intel Core i5-520M @ 2.40GHz uses around 33% more power. All the CPUs in this comparison belong in the Laptop CPU Class. The values below were tabulated from a combined 3335 benchmarks submitted from our PerformanceTest software and results and are updated daily to include new submissions.

  • The first section will show basic information for each CPU selected.
  • The additional graphs shows the CPU Mark and Single Thread values of each CPU selected.
  • An accompany graph, if price data is available, will shows the value for money, in terms of the CPU Mark/Thread Rating per dollar.
  • The last section will show approximate yearly running costs for the CPUs.

×Intel Core i7-640LM @ 2.13GHz×Intel Core i5-520M @ 2.40GHz+ ADD
Price Search Online Search Online
Socket TypeBGA1288BGA1288
CPU ClassLaptopLaptop
Clockspeed2.1 GHz2.4 GHz
Turbo SpeedUp to 2.9 GHzUp to 2.9 GHz
# of Physical Cores2 (Threads: 4)2 (Threads: 4)
CacheL1: 128KB, L2: 0.5MB, L3: 4MBL1: 128KB, L2: 0.5MB, L3: 3MB
TDP25W35W
Yearly Running Cost$4.56$6.39
Other
First Seen on ChartQ1 2010Q1 2010
# of Samples1973138
CPU Value0.017.3
Single Thread Rating(% diff. to max in group)1049(-3.8%)1091(0.0%)
CPU Mark(% diff. to max in group)1529(-11.5%)1728(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 9th of December 2025 - Higher results represent better performance
Intel Core i7-640LM @ 2.13GHz
1,529
Intel Core i5-520M @ 2.40GHz
1,728
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 9th of December 2025 - Higher results represent better value
Intel Core i7-640LM @ 2.13GHz
NA
Intel Core i5-520M @ 2.40GHz
17.3
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 9th of December 2025 - Higher results represent better performance
Intel Core i7-640LM @ 2.13GHz
1,049
Intel Core i5-520M @ 2.40GHz
1,091
PassMark Software © 2008-2025
Estimated Energy Usage Cost
Estimated Energy Adjustable Values
Average hours of use per day Average CPU Utilization (0-100%)1 Power cost, $ per kWh2
8
25
1Average user usage is typically low and can vary from task to task. An estimate load 25% is nominal.
2Typical power costs vary around the world. Check your last power bill for details. Values of $0.15 to $0.45 per kWh are typical.
Intel Core i7-640LM @ 2.13GHz Intel Core i5-520M @ 2.40GHz
Max TDP25W35W
Power consumption per day (kWh)NANA
Running cost per dayNANA
Power consumption per year (kWh)NANA
Running cost per yearNANA
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.