Intel Core i5 1235U vs i3 1215U

We compared two laptop CPUs: the 1.3 GHz Intel Core i5 1235U with 10-cores against the 1.2 GHz i3 1215U with 6-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
Measure performance when all cores are involved
Power Efficiency
The efficiency score of electricity consumption
NanoReview Final Score
Generic CPU rating

Key Differences

What are the key differences between 1215U and 1235U
Advantages of Intel Core i5 1235U
  • Has 4 more physical cores
  • Has 2 MB larger L3 cache size


Comparing the performance of CPUs in benchmarks
Cinebench R23 (Single-Core)
Cinebench R23 (Multi-Core)
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)
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Full technical specification of Intel Core i5 1235U and i3 1215U


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 i5-1235U i3-1215U
Integrated GPU Iris Xe Graphics (80EU) UHD Graphics (64EU)


Performance Cores
P-Cores 2 2
P-Threads 4 4
Base Frequency (P) 1.3 GHz 1.2 GHz
Turbo Boost Frequency (P) 4.4 GHz 4.4 GHz
Efficient Cores
E-Cores 8 4
E-Threads 8 4
Base Frequency (E) 0.9 GHz 0.9 GHz
Turbo Boost Frequency (E) 3.3 GHz 3.3 GHz
Total Cores 10 6
Total Threads 12 8
Bus Frequency 100 MHz 100 MHz
Multiplier 13x 12x
L1 Cache 80K (per core) 80K (per core)
L2 Cache 1280K (per core) 1280K (per core)
L3 Cache 12MB (shared) 10MB (shared)
Unlocked Multiplier No No


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


Integrated Graphics Intel Iris Xe Graphics (80EU) Intel UHD Graphics (64EU)
GPU Base Clock 300 MHz 300 MHz
GPU Boost Clock 1200 MHz 1100 MHz
Shading Units 640 512
TMUs 40 32
ROPs 20 16
Execution Units 80 64
TGP 15 W 45 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 1235U official page Intel Core i3 1215U official page
PCI Express Version 4.0 4.0
PCI Express Lanes 20 20

Cast your vote

Choose between two processors
78 (37.3%)
131 (62.7%)
Total votes: 209


So which CPU will you choose: Intel Core i3 1215U or i5 1235U?
Invidere 13 December 2022 02:27
How big is the difference in iGPU performance between the two processors? Looking at the numbers, the i5 seems to be 25% faster...
+26 Reply
I3 14 December 2022 13:49
I3 1215 iGpu runs on 45w compared to 15w i5. No matter how powerful a gpu is if it doesn't run at full capacity it's not worth your money For example, a Gtx 1050m running at 75w can easily outperform a gtx 1060m running at 45w given both have maximum VRAM available. I3 igpu is excellent for 2 in 1 and mini laptops where you don't play demanding games, it's good for small games, all visual novels, running and using bluestack (16GB ram recommended). I5 is somewhat skippable because the difference between both is not worth the extra 100-200$ IMO. If you really need something better than i3 you should look at i7 or Ryzen 5. Because they have better igpus. Only choose i5 if you are a multi Tasker like opening chrome+ mp3 player+ word/excel + copying a medium file in the background. I3 cannot handle so many tasks and may be maxed at 2-3 because it runs on fewer cores. It's already stated that i3 and i5 have identical single-core performance, but i5 is slightly ahead in multicore. Hope this helps.
+24 Reply