The Lenovo Yoga 3 Pro launched last week and has been handled by enough people now for us to get an idea of the performance of the Core M platform and the quality of the product. It’s the worlds-thinnest 2-in-1 and weighs just 1.19 KG which, for a 13.3-inch convertible is quite impressive. Lenovo have squeezed in a reasonably sized battery and there are a few other highlight features too.
Let this be a lesson to all of us. The Fujitsu Q702 I am testing right now has a 1.8Ghz Core i5 CPU with Turbo Boost Technology that can take it to 2.6Ghz. The whole thing is packed inside a tablet PC. Impressive. The problem is that this 1.8Ghz platform down-clocks itself from 1.8Ghz to an average 1.3Ghz when under load. Fujitsu don’t appear to be telling their customers either.
I’ve just finished the main text for the full Samsung Series 5 13” Ultrabook review. It’s been a tough one. [Details, specs, gallery here, Review will be live tomorrow and linked on this page.]
To all intents and purposes the Series 5 is a simple, unfussy and polite Ultrabook but there’s a lot going on under the hood. It’s a swan! Express Cache is doing it’s stuff to improve boot, hibernation and application startup times and Turbo is giving a leg-up where needed; but only a little one. It seems the Samsung Series 5 has been de-tuned in order to keep it quiet.
Early in January I put forward an article which highlighted the differences between the ‘ultra low voltage’ CPUs you get in Ultrabooks and the ‘low voltage’ CPUs you get in many laptops. I gave some comparison figures for two devices in different usage scenarios by measuring ‘system’ power drain and it was only in the high-end tests where we saw the ULV processor being significantly more efficient. In this article I continue the testing and compare the LV and ULV cores directly. The results are blow.
Measuring ‘system’ drain on two different systems isn’t the most scientific of tests so a discussion broke out in the comments about how we could measure a true difference in efficiency between ULV and LV processors and whether it could be possible to run low-voltage processors at slower clockrates and get the same efficiency as a ULV processor.
The theory says ‘No.’ If you run a CPU at the same frequency but with a higher voltage, the power usage goes up.
It’s not going to be possible to get a full review of the ASUS UX31 together as unfortunately I’ll be returning it tomorrow to exchange it for a Toshiba Z830 and settling on that for my work at CES, Mobile World Congress and probably CeBIT in March. It has been a tough decision but it’s time to bite the bullet and get to work. Before I do thought, let me tell you what I have learnt about the UX31 in the last 4 days.