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AMD Athlon X4 840 vs A10-6800K APU

The AMD Athlon X4 840 is newer than AMD A10-6800K APU, while the multi-threaded (CPU Mark) is simliar, AMD A10-6800K APU is around 7% faster in single-thread testing. However, AMD A10-6800K APU uses around 42% more power. All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 1254 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 A10-6800K APU+ ADD
Price Search Online $108.02 - BUY
Socket TypeFM2+FM2
CPU ClassDesktopDesktop
Clockspeed3.1 GHz4.1 GHz
Turbo SpeedUp to 3.8 GHzUp to 4.4 GHz
# of Physical Cores4 (in 2 physical modules)4 (in 2 physical modules)
CacheL1: 448KB, L2: 8.0MB, L1: 320KB, L2: 8.0MB,
TDP65W100W
Yearly Running Cost$11.86$18.25
Other
First Seen on ChartQ1 2015Q2 2013
# of Samples2491005
CPU Value26.629.5
Single Thread Rating(% diff. to max in group)1482(-6.9%)1592(0.0%)
CPU Mark(% diff. to max in group)3318(0.0%)3187(-3.9%)
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 A10-6800K APU
3,187
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 A10-6800K APU
29.5
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 A10-6800K APU
1,592
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 A10-6800K APU
Max TDP65W100W
Power consumption per day (kWh)0.130.20
Running cost per day$0.033$0.050
Power consumption per year (kWh)47.573.0
Running cost per year$11.86$18.25
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.