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Intel Atom x5-Z8500 vs AMD Phenom II N640 Dual-

The Intel Atom x5-Z8500 @ 1.44GHz is newer than AMD Phenom II N640 Dual-Core also around 22% faster in multi-threaded (CPU Mark) testing, but AMD Phenom II N640 Dual-Core is around 39% faster in single-thread testing. However, Intel Atom x5-Z8500 @ 1.44GHz uses substantially less power. All the CPUs in this comparison belong in the Laptop CPU Class.The values below were tabulated from a combined 279 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 x5-Z8500 @ 1.44GHz×AMD Phenom II N640 Dual-Core+ ADD
Price Search Online Search Online
Socket TypeUTFCBGA1380S1
CPU ClassLaptopLaptop
Clockspeed1.4 GHz2.9 GHz
Turbo SpeedUp to 2.2 GHzNot Supported
# of Physical Cores4 (Threads: 4)2 (Threads: 2)
CacheL1: 224KB, L2: 2.0MB, L3: 0MBL1: 256KB, L2: 2.0MB,
TDP4W35W
Yearly Running Cost$0.73$6.39
Other
First Seen on ChartQ3 2015Q4 2010
# of Samples22257
CPU Value19.717.6
Single Thread Rating(% diff. to max in group)631(-39.2%)10393(0.0%)
CPU Mark(% diff. to max in group)1236(0.0%)965(-21.9%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.
3 - Single thread rating may be higher than the overall rating, thread performance is just one component of the CPU Mark.

CPU Mark Rating
As of 21st of December 2024 - Higher results represent better performance
Intel Atom x5-Z8500 @ 1.44GHz
1,236
AMD Phenom II N640 Dual-Core
965
PassMark Software © 2008-2024
CPU Value (CPU Mark / $Price)
As of 21st of December 2024 - Higher results represent better value
Intel Atom x5-Z8500 @ 1.44GHz
19.7
AMD Phenom II N640 Dual-Core
17.6
PassMark Software © 2008-2024
CPU Single Thread Rating
As of 21st of December 2024 - Higher results represent better performance
Intel Atom x5-Z8500 @ 1.44GHz
631
AMD Phenom II N640 Dual-Core
1,039
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 x5-Z8500 @ 1.44GHz AMD Phenom II N640 Dual-Core
Max TDP4W35W
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.