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AMD Phenom II X3 B77 vs Athlon II X3 455

The AMD Phenom II X3 B77 is newer than AMD Athlon II X3 455 however both CPUs have comparable multi-threaded (CPU Mark) and single-thread rating. Both CPUs operates at simliar power levels (TDP). All the CPUs in this comparison belong in the Desktop CPU Class. The values below were tabulated from a combined 398 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 X3 B77×AMD Athlon II X3 455+ ADD
Price Search Online Search Online
Socket TypeAM2+/AM3AM3
CPU ClassDesktopDesktop
Clockspeed3.2 GHz3.3 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores3 (Threads: 3)3 (Threads: 3)
CacheL1: 384KB, L2: 1.5MB, L3: 6MBL1: 384KB, L2: 1.5MB,
TDP95W95W
Yearly Running Cost$17.34$17.34
Other
First Seen on ChartQ2 2012Q4 2010
# of Samples5393
CPU Rank36733599
CPU Value82.775.3
Single Thread Rating(% diff. to max in group)1310(-1.7%)1333(0.0%)
CPU Mark(% diff. to max in group)1844(-4.9%)1938(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 22nd of January 2026 - Higher results represent better performance
AMD Phenom II X3 B77
1,844
AMD Athlon II X3 455
1,938
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 22nd of January 2026 - Higher results represent better value
AMD Phenom II X3 B77
82.7
AMD Athlon II X3 455
75.3
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 22nd of January 2026 - Higher results represent better performance
AMD Phenom II X3 B77
1,310
AMD Athlon II X3 455
1,333
PassMark Software © 2008-2026
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 X3 B77 AMD Athlon II X3 455
Max TDP95W95W
Power consumption per day (kWh)NANA
Running cost per dayNANA
Power consumption per year (kWh)NANA
Running cost per yearNANA
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.