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CPU Benchmarks

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AMD Athlon X4 840 vs A10-7850K APU

The AMD Athlon X4 840 is newer than AMD A10-7850K APU and has comparable multi-threaded (CPU Mark) and single-thread rating. However, AMD A10-7850K APU uses around 38% more power. All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 1768 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.

×AMD Athlon X4 840×AMD A10-7850K APU+ ADD
Price Search Online $134.99 - BUY
Socket TypeFM2+FM2+
CPU ClassDesktopDesktop
Clockspeed3.1 GHz3.7 GHz
Turbo SpeedUp to 3.8 GHzUp to 4.0 GHz
# of Physical Cores4 (in 2 physical modules)4 (in 2 physical modules)
CacheL1: 448KB, L2: 8.0MB, L1: 448KB, L2: 8.0MB,
TDP65W95W
Yearly Running Cost$11.86$17.34
Other
First Seen on ChartQ1 2015Q1 2014
# of Samples2491519
CPU Value26.625.1
Single Thread Rating(% diff. to max in group)1482(-1.0%)1497(0.0%)
CPU Mark(% diff. to max in group)3318(-2.2%)3393(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 6th of April 2025 - Higher results represent better performance
AMD Athlon X4 840
3,318
AMD A10-7850K APU
3,393
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 6th of April 2025 - Higher results represent better value
AMD Athlon X4 840
26.6
AMD A10-7850K APU
25.1
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 6th of April 2025 - Higher results represent better performance
AMD Athlon X4 840
1,482
AMD A10-7850K APU
1,497
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.
AMD Athlon X4 840 AMD A10-7850K APU
Max TDP65W95W
Power consumption per day (kWh)0.130.19
Running cost per day$0.033$0.048
Power consumption per year (kWh)47.569.3
Running cost per year$11.86$17.34
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.