Asus Zenbook 14 OLED UX3405M w/ Intel Core Ultra 7 155H

Testing the Intel Core Ultra 7 155H

The Asus Zenbook is controlled by software named MyAsus that has three power settings. We show these settings in some detail in our video but here is the brief overview for the Core Ultra 7 155H in our Asus Zenbook 14 OLED UX3405M:

In Performance Mode PL1 is 64W and PL2 is 44W. After an initial boost to 3.6GHz for the P-cores we see the CPU slow to approximately 2.1-2.2GHz Sustained power draw is 28W and we saw a Cinebench R23 score of 10,275 and a 75 degrees Celsius CPU Package temperature.

In Standard Mode PL1 is 64W and PL2 is 36W. We saw a brief boost to 3.6GHz for the P-cores followed by the same sustained 2.1-2.2GHz. The sustained power draw was 32W and the CPU Package temperature was higher at 89 degrees C as the cooling system was running slower and making much less noise. The Cinebench R23 score was slightly lower at 9,408.

In Whisper Mode PL1 is 64W and PL2 is 30W and once again we saw a boost to 3.6GHz on the P-cores but that rapidly fell back to 2.0GHz at a sustained power draw of 19W. The cooling system lived up to its name in Whisper Mode and was incredibly quiet, however the CPU Package was running at 98 degrees Celsius. In this run our Cinebench R23 score was a lowly 6,727.

Cinebench R23 Multi Core

In Cinebench R23 Multi Core, using the Asus Standard Mode, we were perfectly happy with the performance. As we can see in our chart it sits between a Core i7-12800H running on 35W and a Core i7-12700H using 45W so it seems that Intel has made some useful advances in power efficiency.

Cinebench R23 Single Core

In the Cinebench R23 Single Core test the Core Ultra 7 155H does a decent job but is clearly configured to work efficiently, rather than aiming for high clock speeds and chart topping performance.

CPU Power Draw

In this chart of CPU Power Draw during a run of Cinebench R23 we can see the Core Ultra 7 155H uses very little power while running in Standard Mode, and if we had chosen to use Whisper Mode it would have used significantly less power.

AIDA64 Memory Bandwidth

The memory used by Asus is the Zenbook 14 OLED UX3405M is 32GB of incredibly rapid LPDDR5x that is rated at 8533MT/sec in dual channel. The consequence is that this laptop stomps the AIDA64 Memory Bandwidth by a handy margin.

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