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AMD Athlon II X4 638 Quad- vs Intel i5-6600K

The Intel Core i5-6600K @ 3.50GHz is newer than AMD Athlon II X4 638 Quad-Core and is significantly faster in multi-threaded (CPU Mark) testing. It is also significantly faster in single-thread testing. Also, Intel Core i5-6600K @ 3.50GHz uses around 33% more power. All the CPUs in this comparison belong in the Desktop CPU Class. The values below were tabulated from a combined 7054 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 X4 638 Quad-Core×Intel Core i5-6600K @ 3.50GHz+ ADD
Price Search Online $107.36 - BUY
Socket TypeFM1FCLGA1151
CPU ClassDesktopDesktop
Clockspeed2.7 GHz3.5 GHz
Turbo SpeedNot SupportedUp to 3.9 GHz
# of Physical Cores4 (Threads: 4)4 (Threads: 4)
CacheL1: 512KB, L2: 4.0MB, L1: 256KB, L2: 1.0MB, L3: 6MB
TDP65W91W
Yearly Running Cost$11.86$16.61
Other
First Seen on ChartQ2 2015Q3 2015
# of Samples77047
CPU Value36.058.7
Single Thread Rating(% diff. to max in group)1158(-49.9%)2314(0.0%)
CPU Mark(% diff. to max in group)2260(-64.1%)6299(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 12th of December 2025 - Higher results represent better performance
AMD Athlon II X4 638 Quad-Core
2,260
Intel Core i5-6600K @ 3.50GHz
6,299
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 12th of December 2025 - Higher results represent better value
AMD Athlon II X4 638 Quad-Core
36.0
Intel Core i5-6600K @ 3.50GHz
58.7
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 12th of December 2025 - Higher results represent better performance
AMD Athlon II X4 638 Quad-Core
1,158
Intel Core i5-6600K @ 3.50GHz
2,314
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 X4 638 Quad-Core Intel Core i5-6600K @ 3.50GHz
Max TDP65W91W
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.