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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

AMD Phenom II X4 B65 vs Athlon II X4 645

The AMD Phenom II X4 B65 is newer than AMD Athlon II X4 645 also around 12% faster in multi-threaded (CPU Mark) testing, it is around 8% faster in single-thread testing. All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 640 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 Phenom II X4 B65×AMD Athlon II X4 645+ ADD
Price Search Online $59.99 - BUY
Socket TypeAM2+/AM3AM3
CPU ClassDesktopDesktop
Clockspeed3.4 GHz3.1 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores4 (Threads: 4)4 (Threads: 4)
CacheL1: 384KB, L2: 1.5MB, L3: 6MBL1: 512KB, L2: 2.0MB,
TDPNA295W
Yearly Running CostNA$17.34
Other
First Seen on ChartQ1 2011Q4 2010
# of Samples19621
CPU Value0.039.6
Single Thread Rating(% diff. to max in group)1370(0.0%)1259(-8.1%)
CPU Mark(% diff. to max in group)2690(0.0%)2373(-11.8%)
2 - Information not available. Do you know? Notify Us.

CPU Mark Rating
As of 2nd of April 2025 - Higher results represent better performance
AMD Phenom II X4 B65
2,690
AMD Athlon II X4 645
2,373
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 2nd of April 2025 - Higher results represent better value
AMD Phenom II X4 B65
NA
AMD Athlon II X4 645
39.6
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 2nd of April 2025 - Higher results represent better performance
AMD Phenom II X4 B65
1,370
AMD Athlon II X4 645
1,259
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 Phenom II X4 B65 AMD Athlon II X4 645
Max TDPNA95W
Power consumption per day (kWh)NA0.19
Running cost per dayNA$0.048
Power consumption per year (kWh)NA69.3
Running cost per yearNA$17.34
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.