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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel i5-520M vs i3-3120M

The Intel Core i3-3120M @ 2.50GHz is newer than Intel Core i5-520M @ 2.40GHz is around 17% faster in single-thread testing. Both CPUs operates at simliar power levels (TDP). All the CPUs in this comparison belong in the Laptop CPU Class. The values below were tabulated from a combined 4575 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 i5-520M @ 2.40GHz×Intel Core i3-3120M @ 2.50GHz+ ADD
Price Search Online $109.95 - BUY
Socket TypeBGA1288PGA988
CPU ClassLaptopLaptop
Clockspeed2.4 GHz2.5 GHz
Turbo SpeedUp to 2.9 GHzNot Supported
# of Physical Cores2 (Threads: 4)2 (Threads: 4)
CacheL1: 128KB, L2: 0.5MB, L3: 3MBL1: 128KB, L2: 0.5MB, L3: 3MB
TDP35W35W
Yearly Running Cost$6.39$6.39
Other
First Seen on ChartQ1 2010Q1 2012
# of Samples31301445
CPU Value17.315.5
Single Thread Rating(% diff. to max in group)1091(-14.2%)1272(0.0%)
CPU Mark(% diff. to max in group)1729(0.0%)1707(-1.3%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 10th of November 2025 - Higher results represent better performance
Intel Core i5-520M @ 2.40GHz
1,729
Intel Core i3-3120M @ 2.50GHz
1,707
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 10th of November 2025 - Higher results represent better value
Intel Core i5-520M @ 2.40GHz
17.3
Intel Core i3-3120M @ 2.50GHz
15.5
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 10th of November 2025 - Higher results represent better performance
Intel Core i5-520M @ 2.40GHz
1,091
Intel Core i3-3120M @ 2.50GHz
1,272
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 i5-520M @ 2.40GHz Intel Core i3-3120M @ 2.50GHz
Max TDP35W35W
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.