Intel Core i5 1240P vs i5 1235U

We compared two laptop CPUs: the 1.7 GHz Intel Core i5 1240P with 12-cores against the 1.3 GHz i5 1235U with 10-cores. On this page, you'll find out which processor has better performance in benchmarks, games and other useful information.


General overview and comparison of the processors
Single-Core Performance
Performance in single-threaded apps and benchmarks
Multi-Core Performance
Measure performance when all cores are involved
Power Efficiency
The efficiency score of power consumption
Integrated Graphics
iGPU capabilities for gaming and 3D-intensive tasks
NanoReview Final Score
Generic CPU rating

Key Differences

What are the key differences between 1235U and 1240P
Advantages of Intel Core i5 1240P
  • Has 2 more physical cores

Test in Benchmarks

Comparing the performance of CPUs across various tasks

Cinebench R23

Reputable cross-platform benchmark for high-performance processors
Cinebench R23 (Single-Core)
Cinebench R23 (Multi-Core)

GeekBench v6

The new version of this benchmark emulates common operations often used in real-world apps
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
File compression 744.1 MB/sec 735.6 MB/sec
Clang compilation 57.6 Klines/sec 48.3 Klines/sec
HTML 5 Browser 242 pages/sec 209.8 pages/sec
PDF Renderer 267.9 Mpixels/sec 220.8 Mpixels/sec
Text processing 197.4 pages/sec 203.8 pages/sec
Background blur 35.1 images/sec 28 images/sec
Photo processing 83 images/sec 45.6 images/sec
Ray tracing 13.1 Mpixels/sec 4.96 Mpixels/sec
Sources: GeekBench [1], [2]


Synthetic test that focuses on raw computational performance for low-level functions
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Integer math 65.4 GOps/sec 51.8 GOps/sec
Floating point math 45.5 GOps/sec 34.7 GOps/sec
Find prime numbers 48M Primes/sec 38M Primes/sec
Random string sorting 22.9M Strings/sec 18M Strings/sec
Data encryption 12 GBytes/sec 9.8 GBytes/sec
Data compression 202.3 MBytes/sec 153 MBytes/sec
Physics 945 Frames/sec 749 Frames/sec
Extended instructions 11.8B Matrices/sec 8.5B Matrices/sec
Sources: PassMark [3], [4]


Full technical specification of Intel Core i5 1240P and i5 1235U


Vendor Intel Intel
Released February 23, 2022 February 23, 2022
Type Laptop Laptop
instruction set x86-64 x86-64
Codename Alder Lake Alder Lake
Model number i5-1240P i5-1235U
Integrated GPU Iris Xe Graphics (80EU) Iris Xe Graphics (80EU)


Performance Cores
P-Cores 4 2
P-Threads 8 4
Base Frequency (P) 1.7 GHz 1.3 GHz
Turbo Boost Frequency (P) 4.4 GHz 4.4 GHz
Efficient Cores
E-Cores 8 8
E-Threads 8 8
Base Frequency (E) 1.2 GHz 0.9 GHz
Turbo Boost Frequency (E) 3.3 GHz 3.3 GHz
Total Cores 12 10
Total Threads 16 12
Bus Frequency 100 MHz 100 MHz
Multiplier 17x 13x
L1 Cache 80K (per core) 80K (per core)
L2 Cache 1280K (per core) 1280K (per core)
L3 Cache 12MB (shared) 12MB (shared)
Unlocked Multiplier No No


Fabrication process 10 nm 10 nm
TDP (PL1) 20-28 W (configurable) 12-15 W (configurable)
Max. Boost TDP (PL2) 64 W 55 W
Socket BGA-1744 BGA-1744
Peak temperature 100°C 100°C


Integrated Graphics Intel Iris Xe Graphics (80EU) Intel Iris Xe Graphics (80EU)
GPU Base Clock 300 MHz 300 MHz
GPU Boost Clock 1300 MHz 1200 MHz
Shading Units 640 640
TMUs 40 40
ROPs 20 20
Execution Units 80 80
TGP 15 W 15 W

Memory Support

Memory types - DDR5-4800
- DDR4-3200
- LPDDR5-5200
- LPDDR4x-4267
- DDR5-4800
- DDR4-3200
- LPDDR5-5200
- LPDDR4x-4267
Memory Size 64 GB 64 GB
Max. Memory Channels 2 2
ECC Support No No


Official site Intel Core i5 1240P official page Intel Core i5 1235U official page
PCI Express Version 4.0 4.0
PCI Express Lanes 20 20

Cast your vote

Choose between two processors
1266 (72.8%)
474 (27.2%)
Total votes: 1740


So which CPU will you choose: Intel Core i5 1235U or i5 1240P?
optimisticThinking 14 April 2023 02:35
Nowadays, pretty much stable power availability is almost everywhere. Be it by car, train, home, office, etc. So, there is no need to think about battery life all the time unless you don't want to sit in a place and work.
+42 Reply
2in1 FTW 05 January 2023 08:40
Doing research for 2in1 laptops... power is everything (almost) on these things. The performance lost on the 1235U is well worth the power savings AND the price sizeable price difference. The reality is that most things a 2in1 is used for will be GPU based anyway. If you're only going to do CPU-intensive things and don't care so much about battery life, and the price isn't so important go with the i7 1260P anyway.
+46 Reply
Kaps 22 November 2022 14:55
No point in buying i5 1235U over 1240P unless there's a big price difference!
+77 Reply
powerSavvy 29 November 2022 15:44
I like battery life, so I'll take the 1235U at only 15W over a 28W 1240P any day of the week. A U-series processor-based laptop is going to have a much longer-lasting battery than one with a P series (assuming comparable battery size & weight specs). Meanwhile, the 1235U is pretty much as powerful a CPU as the 1220P, which is one step down from the 1240P. IRL, you won't notice the difference between any of these processors unless you do CPU-intensive tasks all the time, in which case none of these processors is a good choice and you should be looking much higher up the CPU line.
+86 Reply
Harish 16 December 2022 16:11
powerSavvy, I agree with you... But if there is not much price difference then I would rather go with the P series.. thanks.
+41 Reply
guest 26 September 2022 18:50
So I am choosing a 1240P processor based on all factors. I think that was the best in both.
+200 Reply