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Intel i7-1255U vs Ultra 7 155U

The Intel Core Ultra 7 155U is newer than Intel Core i7-1255U also around 19% faster in multi-threaded (CPU Mark) testing, it is around 6% faster in single-thread testing. Both CPUs operates at simliar power levels (TDP). All the CPUs in this comparison belong in the Laptop CPU Class.The values below were tabulated from a combined 2100 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 i7-1255U×Intel Core Ultra 7 155U+ ADD
Price Search Online Search Online
Socket TypeFCBGA1744FCBGA2049
CPU ClassLaptopLaptop
Clockspeed1.7 GHz1.7 GHz
Turbo SpeedUp to 4.7 GHzUp to 4.8 GHz
# of Physical Cores10 (Threads: 12)12 (Threads: 14)
CacheL1: 928KB, L2: 6.5MB, L3: 12MBL1: 1,184KB, L2: 10.0MB, L3: 12MB
TDP15W15W
Yearly Running Cost$2.74$2.74
OtherIntel Iris Xe GraphicsIntel Graphics, Intel AI Boost
First Seen on ChartQ1 2022Q1 2024
# of Samples1718382
CPU Value31.734.2
Single Thread Rating(% diff. to max in group)3241(-6.2%)3456(0.0%)
CPU Mark(% diff. to max in group)13488(-19.4%)16734(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 22nd of February 2025 - Higher results represent better performance
Intel Core i7-1255U
13,488
Intel Core Ultra 7 155U
16,734
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 22nd of February 2025 - Higher results represent better value
Intel Core i7-1255U
31.7
Intel Core Ultra 7 155U
34.2
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 22nd of February 2025 - Higher results represent better performance
Intel Core i7-1255U
3,241
Intel Core Ultra 7 155U
3,456
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 i7-1255U Intel Core Ultra 7 155U
Max TDP15W15W
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.