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Intel Atom Z3775 vs i7-6500U

The Intel Core i7-6500U @ 2.50GHz is newer than Intel Atom Z3775 @ 1.46GHz and is significantly faster in multi-threaded (CPU Mark) testing and is significantly faster in single-thread testing. However, Intel Atom Z3775 @ 1.46GHz uses substantially less power. All the CPUs in this comparison belong in the Laptop CPU Class.The values below were tabulated from a combined 6078 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 Atom Z3775 @ 1.46GHz×Intel Core i7-6500U @ 2.50GHz+ ADD
Price Search Online Search Online
Socket TypeUTFCBGA1380FCBGA1356
CPU ClassLaptopLaptop
Clockspeed1.5 GHz2.5 GHz
Turbo SpeedUp to 2.4 GHzUp to 3.1 GHz
# of Physical Cores4 (Threads: 4)2 (Threads: 4)
CacheL1: 448KB, L2: 2.0MB, L3: 0MBL1: 128KB, L2: 0.5MB, L3: 4MB
TDP4W15W
Yearly Running Cost$0.73$2.74
OtherIntel HD Graphics 520
First Seen on ChartQ3 2014Q3 2015
# of Samples2055873
CPU Value1.48.3
Single Thread Rating(% diff. to max in group)505(-70.2%)1694(0.0%)
CPU Mark(% diff. to max in group)704(-78.5%)3277(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 21st of November 2024 - Higher results represent better performance
Intel Atom Z3775 @ 1.46GHz
704
Intel Core i7-6500U @ 2.50GHz
3,277
PassMark Software © 2008-2024
CPU Value (CPU Mark / $Price)
As of 21st of November 2024 - Higher results represent better value
Intel Atom Z3775 @ 1.46GHz
1.4
Intel Core i7-6500U @ 2.50GHz
8.3
PassMark Software © 2008-2024
CPU Single Thread Rating
As of 21st of November 2024 - Higher results represent better performance
Intel Atom Z3775 @ 1.46GHz
505
Intel Core i7-6500U @ 2.50GHz
1,694
PassMark Software © 2008-2024
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 Atom Z3775 @ 1.46GHz Intel Core i7-6500U @ 2.50GHz
Max TDP4W15W
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.