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AMD Phenom II X640 Dual- vs A4-3420 APU

The AMD Phenom II X640 Dual-Core is newer than AMD A4-3420 APU also around 10% faster in multi-threaded (CPU Mark) testing but the CPUs have comparable single-thread rating. However, AMD A4-3420 APU uses around 36% more power. All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 112 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 X640 Dual-Core×AMD A4-3420 APU+ ADD
Price Search Online Search Online
Socket TypeS1FM1
CPU ClassDesktopDesktop
Clockspeed3.2 GHz2.8 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores2 (Threads: 2)2 (Threads: 2)
CacheL1: 256KB, L2: 2.0MB, L1: 256KB, L2: 1.0MB,
TDP45W65W
Yearly Running Cost$8.21$11.86
Other
First Seen on ChartQ2 2012Q1 2012
# of Samples3109
CPU Value0.07.7
Single Thread Rating(% diff. to max in group)1142(0.0%)11133(-2.5%)
CPU Mark(% diff. to max in group)1165(0.0%)1054(-9.5%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.
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 X640 Dual-Core
1,165
AMD A4-3420 APU
1,054
PassMark Software © 2008-2024
CPU Value (CPU Mark / $Price)
As of 24th of November 2024 - Higher results represent better value
AMD Phenom II X640 Dual-Core
NA
AMD A4-3420 APU
7.7
PassMark Software © 2008-2024
CPU Single Thread Rating
As of 24th of November 2024 - Higher results represent better performance
AMD Phenom II X640 Dual-Core
1,142
AMD A4-3420 APU
1,113
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 X640 Dual-Core AMD A4-3420 APU
Max TDP45W65W
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.