Tag Archive | "intel lv cpu"

Power Efficiency – Intel Core ULV CPU vs Intel Core Mobile CPU

Tags: , , , , , , , , , ,


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.

Part 1 – Ultrabook ULV vs Notebook Mobile CPUs

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.

Read the full story

Search UMPCPortal

UMPCPortal Top 10

Viliv S5
4.8" Intel Atom (Silverthorne)
Acer Aspire E11 ES1
11.6" Intel Celeron N2840
HP Elitebook 820 G2
12.5" Intel Core i5 5300U
Acer Aspire Switch 10
10.1" Intel Atom Z3745
Toshiba Portege Z930
13.3" Intel Core i5 3427U
Lenovo Ideapad Flex 10
10.1" Intel Celeron N2806
Toshiba Portege Z830
13.3" Intel Core i5 2467M
HP Chromebook 11 G3
11.6" Intel Celeron N2830
Archos 9
9.0" Intel Atom Z510
Intel NUC Bean Canyon
0.0" Intel Core i7 8559U