Intel’s 13th Gen Raptor Lake CPUs promised 41% better multi-threaded performance and a 15% improvement in single-threaded performance. Today, we will see if these figures hold any weight as we compare two Core i5 CPUs one generation apart, in Core i5-1335U vs Core i5-1235U.
- Both CPUs use the same Intel 7 processing nodes, although the Core i5-1335U uses a more efficient version of the node.
- On average, the Core i5-1335U is 20.3% faster in multi-core applications and 5.3% faster in single-core applications.
- Cost-wise, Core i5-1335U laptops are in the $699-$2028 range while Core i5-1235U lie in the $289-$1189 range.
- The Core i5-1235U provides better value since the performance gap isn’t as significant as the price gap.
Also Read: Core i5 1235U Vs Ryzen 5 7530U
Let’s see how the two mobile CPUs line up.
|Mobile CPU||Core i5-1335U||Core i5-1235U|
|Architecture||Hybrid Core||Hybrid Core|
|Codename||Alder Lake||Alder Lake|
|Processing Node||Intel 7 (10nm)||Intel 7 (10nm)|
|No. of Cores||10 (2P + 8E)||10 (2P + 8E)|
|No. of Threads||12 (4 + 8)||12 (4 + 8)|
|L1 Cache||80KB per core||80KB per core|
|L2 Cache||1280KB per core||1280KB per core|
|L3 Cache||12MB (shared)||12MB (shared)|
|Memory Size||Up to 64GB||Up to 64GB|
|Integrated Graphics||Intel Iris Xe Graphics||Intel Iris Xe Graphics|
|GPU Base Clock||300MHz||300MHz|
|GPU Boost Clock||1250MHz||1200MHz|
|No. of Shaders||640||640|
|No. of TMUs||40||40|
|No. of ROPs||20||20|
|No. of Execution Units||80||80|
|1.41 TFLOPs||1.41 TFLOPs|
|Total Graphics Power||15W||15W|
|CPU Max Operating Temperature||100°C||100°C|
|CPU Base Power||12-15W (configurable)||12-15W (configurable)|
|CPU Boost Power||55W||55W|
|Price Range (July 2023)||$699-$2028||$289-$1199|
|Launch Date||January 3, 2023||February 23, 2022|
Here’s a look at the few minor differences between the two chips.
- Processing Nodes: Although both CPUs use the same nodes, Intel has emphasized improved efficiency in Raptor Lake.
- Clock Speeds: The Core i5-1335U boasts slightly higher boost clock speeds at 4.6GHz for the P-cores and 3.4GHz for the E-cores. In comparison, the Core i5-1235U clocks 4.4GHz for the E-cores and 3.3GHz for the E-cores on boost mode.
- Memory Support: The Core i5-1335U, with its Raptor Lake platform, supports an improved DDR5 transfer speed of up to 6400 MT/s. LPDDR5x support is also added, which the Alder Lake Core i5-1235U does not support.
- iGPU: Another insignificant difference, but the Core i5-1335U adds 50MHz to the GPU boost clock frequency at 1250MHz.
Related: Core i5-1335U Vs Core i5-1135G7
Core i5-1335U Vs Core i5-1235U: Benchmarks
Here’s how the two CPUs compare in multi-core and single-core performance.
- Starting with the Cinebench R23 multi-core test, the Core i5-1335U scores 7348 points compared to 6547 of the Core i5-1235U. Thus, it’s 12.2% ahead.
- In the single-core test, the Core i5-1335U leads narrowly with 1712 points, over 1630 of the Core i5-1235U.
- Moving on to Geekbench 5, the Core i5-1335U has a 19.8% lead here with 7484 points. The Core i5-1235U scored 6343 points.
- As for the single-core test, the Core i5-1335U continues its lead with 1693 points, just ahead of the Core i5-1235U.
Also Read: Core i7-1255U Vs Core i5-1335U
- Finally, in Passmark, the Core i5-1335U maintained impressive multi-core performance with 16895 points. The Core i5-1235U fell short with 13567 points.
- The single-core test saw the Core i5-1335U scoring 3451 points compared to 3299 of the Core i5-1235U. Here, the Core i5-1335U has a 4.6% lead.
More Comparisons: Core i7-1255U Vs Core i5-1335U
I’ve averaged the multi-core and single-core scores across the three games for a more definitive result. Let’s take a look.
- Multi-core Performance: The Core i5-1335U averaged 10575 points, while the Core i5-1235U recorded 8785 points on average. This means the Core i5-1335U is, on average, 20.3% faster than the Core i5-1235U in multi-core applications.
- Single-core Performance: Across the single-core tests, the Core i5-1335U averaged 2285 points over 2168 points of the Core i5-1235U. Thus, on average, the Core i5-1335U shows 5.3% better single-core performance than the Core i5-1235U.
Also Check: Core i5 1335U Vs Ryzen 5 7640U
Let’s take a look at the laptop prices for both CPUs.
Note: The prices have been taken from Amazon US and are valid as of September 2023.
- Core i5-1335U: Laptops using this mobile CPU start at $649, with the best-selling laptops lying in the $699-$1099 range. The most expensive laptops can cost you up to $2028.
- Core i5-1235U: Laptops using this Alder Lake chip start at just $289. The most popular laptops range from $479 to $799. Lastly, the most expensive laptop costs $1199.
Core i5-1235U Vs Core i5-1335U: Which One Offers Better Value?
How do the two CPUs compare in performance per dollar?
- You can get a Core i5-1235U laptop for as cheap as $289, which is about 124% cheaper than what the cheapest Core i5-1335U laptop will cost you.
- Granted, the Core i5-1335U showed better multi-core and single-core scores, but this massive price gap negates that performance gap.
As I mentioned, the Core i5-1335U is just a refresh of the Core i5-1235U with very minor differences. It still managed a significant improvement in multi-core performance, albeit the single-core performance difference is much smaller. All-in-all, it’s a decent improvement for one generation, but again, it’s just not worth it at that price difference.
Thus, the Core i5-1235U offers a much better value than the Core i5-1335U.
Similar Comparison: Intel Core i5-1235U Vs AMD Ryzen 5 7520U
I found that the Core i5-1335U is essentially a refresh of the Core-i5-1235U with minor differences and perhaps an improved Intel 7 node.
As such, there isn’t a very big performance gap, especially in single-core performance. On top of that, Core i5-1235U laptops have been much cheaper since Raptor Lake’s launch. Thus, the Core i5-1235U generally provides much better value.
The only noticeable advantage of the Core i5-1335U is improved DDR5 speeds and added LPDDR5x support. In any case, I hope this guide has helped you choose your next mobile CPU.
Pros And Cons
Frequently Asked Questions
The Core i5-1335U has mostly the same specifications over the Core i5-1235U other than an improved processing node. It’s also much more expensive, making it a relatively poor choice.
The Core i5-1335U provides a 200MHz improvement in P-core boost frequency and a 100MHz improvement in E-core boost frequency. On top of that, DDR5 support is extended to 6400 MT/s, and additional LPDDR5x support has also been added.
Both CPUs have the same 12-15 watts base TDP rating and 55-watt boost TDP rating. So, the two mobile CPUs have no difference in power efficiency.
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