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AMD RX-427BB vs Intel i7-5557U

The Intel Core i7-5557U @ 3.10GHz is newer than AMD RX-427BB also around 13% faster in multi-threaded (CPU Mark) testing, it is around 33% faster in single-thread testing. However, AMD RX-427BB uses around 22% more power. All the CPUs in this comparison belong in the Laptop CPU Class.The values below were tabulated from a combined 527 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 RX-427BB×Intel Core i7-5557U @ 3.10GHz+ ADD
Price Search Online Search Online
Socket TypeFP3FCBGA1168
CPU ClassLaptopLaptop
Clockspeed2.7 GHz3.1 GHz
Turbo SpeedUp to 3.6 GHzUp to 3.4 GHz
# of Physical Cores4 (in 4 physical modules)2 (Threads: 4)
CacheL1: 448KB, L2: 8.0MB, L1: 128KB, L2: 0.5MB, L3: 4MB
TDP35W28W
Yearly Running Cost$6.39$5.11
Otherwith AMD Radeon R7 Graphics
First Seen on ChartQ1 2015Q1 2015
# of Samples39488
CPU Value0.05.2
Single Thread Rating(% diff. to max in group)1292(-33.1%)1932(0.0%)
CPU Mark(% diff. to max in group)2728(-13.2%)3142(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 14th of March 2025 - Higher results represent better performance
AMD RX-427BB
2,728
Intel Core i7-5557U @ 3.10GHz
3,142
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 14th of March 2025 - Higher results represent better value
AMD RX-427BB
NA
Intel Core i7-5557U @ 3.10GHz
5.2
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 14th of March 2025 - Higher results represent better performance
AMD RX-427BB
1,292
Intel Core i7-5557U @ 3.10GHz
1,932
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 RX-427BB Intel Core i7-5557U @ 3.10GHz
Max TDP35W28W
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.