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AMD A8-5600K APU vs Phenom II X4 955

The AMD A8-5600K APU is newer than AMD Phenom II X4 955 also around 11% faster in multi-threaded (CPU Mark) testing, it is around 9% faster in single-thread testing. However, AMD Phenom II X4 955 uses around 22% more power. All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 5169 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 A8-5600K APU×AMD Phenom II X4 955+ ADD
Price $69.01 - BUY Search Online
Socket TypeFM2AM3
CPU ClassDesktopDesktop
Clockspeed3.6 GHz3.2 GHz
Turbo SpeedUp to 3.9 GHzNot Supported
# of Physical Cores4 (in 4 physical modules)4 (Threads: 4)
CacheL1: 320KB, L2: 8.0MB, L1: 512KB, L2: 2.0MB, L3: 6MB
TDP100W125W
Yearly Running Cost$18.25$22.81
Other
First Seen on ChartQ4 2012Q1 2009
# of Samples11114058
CPU Value41.442.9
Single Thread Rating(% diff. to max in group)1429(0.0%)1295(-9.3%)
CPU Mark(% diff. to max in group)2859(0.0%)2534(-11.4%)
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 A8-5600K APU
2,859
AMD Phenom II X4 955
2,534
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 6th of April 2025 - Higher results represent better value
AMD A8-5600K APU
41.4
AMD Phenom II X4 955
42.9
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 6th of April 2025 - Higher results represent better performance
AMD A8-5600K APU
1,429
AMD Phenom II X4 955
1,295
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 A8-5600K APU AMD Phenom II X4 955
Max TDP100W125W
Power consumption per day (kWh)0.200.25
Running cost per day$0.050$0.063
Power consumption per year (kWh)73.091.3
Running cost per year$18.25$22.81
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.