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AMD Phenom II X2 521 vs A4-3400 APU

The AMD A4-3400 APU is newer than AMD Phenom II X2 521, while AMD Phenom II X2 521 is around 21% faster in multi-threaded (CPU Mark) testing, it is around 23% faster in single-thread testing. 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 342 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 X2 521×AMD A4-3400 APU+ ADD
Price Search Online $79.95 - BUY
Socket TypeAM2+/AM3FM1
CPU ClassDesktopDesktop
Clockspeed3.5 GHz2.7 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores2 (Threads: 2)2 (Threads: 2)
CacheL1: 256KB, L2: 2.0MB, L1: 256KB, L2: 1.0MB,
TDP65W65W
Yearly Running Cost$11.86$11.86
Other
First Seen on ChartQ2 2011Q3 2011
# of Samples40302
CPU Value0.013.6
Single Thread Rating(% diff. to max in group)14093(0.0%)1082(-23.2%)
CPU Mark(% diff. to max in group)1374(0.0%)1086(-20.9%)
3 - Single thread rating may be higher than the overall rating, thread performance is just one component of the CPU Mark.

CPU Mark Rating
As of 24th of November 2024 - Higher results represent better performance
AMD Phenom II X2 521
1,374
AMD A4-3400 APU
1,086
PassMark Software © 2008-2024
CPU Value (CPU Mark / $Price)
As of 24th of November 2024 - Higher results represent better value
AMD Phenom II X2 521
NA
AMD A4-3400 APU
13.6
PassMark Software © 2008-2024
CPU Single Thread Rating
As of 24th of November 2024 - Higher results represent better performance
AMD Phenom II X2 521
1,409
AMD A4-3400 APU
1,082
PassMark Software © 2008-2024
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 X2 521 AMD A4-3400 APU
Max TDP65W65W
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.