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Intel i7-1355U vs AMD Ryzen 7 PRO 7840U

The AMD Ryzen 7 PRO 7840U is newer than Intel Core i7-1355U also around 41% faster in multi-threaded (CPU Mark) testing, it is around 6% faster in single-thread testing. However, Intel Core i7-1355U uses substantially less power. All the CPUs in this comparison belong in the Laptop CPU Class.The values below were tabulated from a combined 2063 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.

×Intel Core i7-1355U×AMD Ryzen 7 PRO 7840U+ ADD
Price Search Online Search Online
Socket TypeFCBGA1744NA2
CPU ClassLaptopLaptop
Clockspeed1.7 GHz3.3 GHz
Turbo SpeedUp to 5.0 GHzUp to 5.1 GHz
# of Physical Cores10 (Threads: 12)8 (Threads: 16)
CacheL1: 928KB, L2: 6.5MB, L3: 12MBL1: 512KB, L2: 8.0MB, L3: 16MB
TDP15W30W
Yearly Running Cost$2.74$5.48
OtherIntel Iris Xe Graphics eligiblew/ Radeon 780M Graphics
First Seen on ChartQ2 2023Q2 2023
# of Samples1571492
CPU Value30.90.0
Single Thread Rating(% diff. to max in group)3468(-6.1%)3693(0.0%)
CPU Mark(% diff. to max in group)14489(-41.1%)24616(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.
2 - Information not available. Do you know? Notify Us.

CPU Mark Rating
As of 18th of April 2025 - Higher results represent better performance
Intel Core i7-1355U
14,489
AMD Ryzen 7 PRO 7840U
24,616
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 18th of April 2025 - Higher results represent better value
Intel Core i7-1355U
30.9
AMD Ryzen 7 PRO 7840U
NA
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 18th of April 2025 - Higher results represent better performance
Intel Core i7-1355U
3,468
AMD Ryzen 7 PRO 7840U
3,693
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.
Intel Core i7-1355U AMD Ryzen 7 PRO 7840U
Max TDP15W30W
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.