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Intel i7-840QM vs i7-620M

The Intel Core i7-840QM @ 1.87GHz is newer than Intel Core i7-620M @ 2.67GHz however both CPUs have comparable multi-threaded (CPU Mark) and single-thread rating. Also, Intel Core i7-840QM @ 1.87GHz uses around 25% more power. All the CPUs in this comparison belong in the Laptop CPU Class. The values below were tabulated from a combined 1705 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 i7-840QM @ 1.87GHz×Intel Core i7-620M @ 2.67GHz+ ADD
Price Search Online Search Online
Socket TypePGA988ABGA1288
CPU ClassLaptopLaptop
Clockspeed1.9 GHz2.7 GHz
Turbo SpeedUp to 3.2 GHzUp to 3.3 GHz
# of Physical Cores4 (Threads: 8)2 (Threads: 4)
CacheL1: 256KB, L2: 1.0MB, L3: 8MBL1: 128KB, L2: 0.5MB, L3: 4MB
TDP45W35W
Yearly Running Cost$8.21$6.39
Other
First Seen on ChartQ3 2010Q1 2010
# of Samples2391466
CPU Value22.911.3
Single Thread Rating(% diff. to max in group)1137(-11.2%)1281(0.0%)
CPU Mark(% diff. to max in group)1950(-1.3%)1975(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 13th of May 2025 - Higher results represent better performance
Intel Core i7-840QM @ 1.87GHz
1,950
Intel Core i7-620M @ 2.67GHz
1,975
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 13th of May 2025 - Higher results represent better value
Intel Core i7-840QM @ 1.87GHz
22.9
Intel Core i7-620M @ 2.67GHz
11.3
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 13th of May 2025 - Higher results represent better performance
Intel Core i7-840QM @ 1.87GHz
1,137
Intel Core i7-620M @ 2.67GHz
1,281
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 i7-840QM @ 1.87GHz Intel Core i7-620M @ 2.67GHz
Max TDP45W35W
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.