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AMD Athlon II X3 440 vs Phenom II X2 555

The AMD Athlon II X3 440 is newer than AMD Phenom II X2 555 also around 24% faster in multi-threaded (CPU Mark) testing, but AMD Phenom II X2 555 is around 8% faster in single-thread testing. However, AMD Athlon II X3 440 uses around 17% more power. All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 736 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 II X3 440×AMD Phenom II X2 555+ ADD
Price Search Online Search Online
Socket TypeAM3AM2+/AM3
CPU ClassDesktopDesktop
Clockspeed3.0 GHz3.2 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores3 (Threads: 3)2 (Threads: 2)
CacheL1: 384KB, L2: 1.5MB, L1: 256KB, L2: 1.0MB, L3: 6MB
TDP95W80W
Yearly Running Cost$17.34$14.60
Other
First Seen on ChartQ1 2010Q1 2010
# of Samples252484
CPU Value117.3100.4
Single Thread Rating(% diff. to max in group)1193(-8.5%)1304(0.0%)
CPU Mark(% diff. to max in group)1719(0.0%)1308(-23.9%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 7th of April 2025 - Higher results represent better performance
AMD Athlon II X3 440
1,719
AMD Phenom II X2 555
1,308
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 7th of April 2025 - Higher results represent better value
AMD Athlon II X3 440
117.3
AMD Phenom II X2 555
100.4
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 7th of April 2025 - Higher results represent better performance
AMD Athlon II X3 440
1,193
AMD Phenom II X2 555
1,304
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 II X3 440 AMD Phenom II X2 555
Max TDP95W80W
Power consumption per day (kWh)0.190.16
Running cost per day$0.048$0.040
Power consumption per year (kWh)69.358.4
Running cost per year$17.34$14.60
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.