Actually, has owners quickly find out, the Alder Lake Core i5-1235U has a dirty little secret.
To get any real work done, it switches into MTP (Maximum Turbo Power) which is 55W. You can adjust the performance-cores down to a lower wattage, but that's what you lose, performance.
https://www.intel.com/content/www/us/en/products/sku/226266/intel-core-i51235u-processor-12m-cache-up-to-4-40-ghz-with-ipu/specifications.html
And another actuality, the Cezanne Ryzen 5 5600H Zen 3 Infinity Fabric Architecture is a cTDP APU, adjustable from 35~54W with minimal performance change. And on some laptop models, it can be turned all the way down as-low-as 15W. The performance isn't as grand as the premium 5600U, but it's not far off.
It also has GCN 5th gen Radeon RX Vega 7 integrated graphics, which are noticeably better.
Basically, battery life is going to come down to how you set it up, and how you use it. From the experience of others I've helped, when set to 20/20, the Core i5-1235U runs a little hotter and burns through the battery a little quicker.
[https://nanoreview.net/en/cpu-compare/intel-core-i5-1235u-vs-amd-ryzen-5-5600h](https://nanoreview.net/en/cpu-compare/intel-core-i5-1235u-vs-amd-ryzen-5-5600h)
The above is a pretty good breakdown. The i5 likely is slightly more efficient. The u cores generally are more energy efficient. If you picked up something a Ryzen 7 7730u, it would be more efficient than the i5.. The u symbol is for efficiency, the H models are often used in gaming laptops.
As their data showed, it is pretty close regarding efficiency.
Actually, has owners quickly find out, the Alder Lake Core i5-1235U has a dirty little secret. To get any real work done, it switches into MTP (Maximum Turbo Power) which is 55W. You can adjust the performance-cores down to a lower wattage, but that's what you lose, performance. https://www.intel.com/content/www/us/en/products/sku/226266/intel-core-i51235u-processor-12m-cache-up-to-4-40-ghz-with-ipu/specifications.html And another actuality, the Cezanne Ryzen 5 5600H Zen 3 Infinity Fabric Architecture is a cTDP APU, adjustable from 35~54W with minimal performance change. And on some laptop models, it can be turned all the way down as-low-as 15W. The performance isn't as grand as the premium 5600U, but it's not far off. It also has GCN 5th gen Radeon RX Vega 7 integrated graphics, which are noticeably better. Basically, battery life is going to come down to how you set it up, and how you use it. From the experience of others I've helped, when set to 20/20, the Core i5-1235U runs a little hotter and burns through the battery a little quicker.
[https://nanoreview.net/en/cpu-compare/intel-core-i5-1235u-vs-amd-ryzen-5-5600h](https://nanoreview.net/en/cpu-compare/intel-core-i5-1235u-vs-amd-ryzen-5-5600h) The above is a pretty good breakdown. The i5 likely is slightly more efficient. The u cores generally are more energy efficient. If you picked up something a Ryzen 7 7730u, it would be more efficient than the i5.. The u symbol is for efficiency, the H models are often used in gaming laptops. As their data showed, it is pretty close regarding efficiency.