Skip to content

Category: Small computers

Power budgets for computing resources – portable and stationary

A cellphone or tablet is a fanless device. So is the 12″ Macbook. That means you can do whatever is possible at any point in time within a TDP of approximately 5W.

Here is the power consumption of my cellphone over a 12h period. The scale on the left is mW, down is discharge, up is recharge (plugged in). It’s basically limited to 5W, and that only for short periods of time.

Cellphone power over time. Green bar = plugged in. Yellow bar = Screen on.

These devices also have batteries, and when they are running on batteries, they need to be sleeping most of the time and have their display off. Whenever they are not dark and/or sleeping, they drain the battery, fast.

Leave a Comment

Backblazing…

So there is Backblaze B2. It’s a service where you can buy bulk disk space online for backup and restore.

I have a Linux server at home, which many harddisks and which downloads and saves all data from the various dedicated servers and cloud instances, receives several time machine backups from the inhouse Apples, and has local git repositories and stuff.

I mirror these things from the production filesystems to a set of mostly offline disks once, and I wanted an off-site backup as well for crash recovery. Bandwidth is not a problem, we are living on FTTH with 500/500.

So there is rclone for this. It’s like rsync for B2 or other services.

Like so:

7 Comments

Qi in Apple, Otterbox makes wireless batteries, and David Foster left Google

So Google fucked the Nexus line, and did the lackluster and overpriced Pixel excursion. The guy who strategically fucked this up, David Foster, apparently goes back to Amazon.

Meanwhile it is an open secret that the iPhone 8 will have the Qi charging that the current Nexus and Pixels don’t have any more. Also, Otterbox and friends are already making contactless battery extensions. It’s not pretty and it’s not efficient, but after the “no ports for nobody” disaster of the current generation of Macbook Pros it’s at least consistent.

This leaves us with the question: Will Google make attractive phones again after Foster is gone now?

1 Comment

Mac mini G4 vs Raspi 3

The Original Mac Mini G4 had a single-core 32-Bit PowerPC CPU at some 1.25 GHz with 512 KB on-chip Cache. It was released in 2005.

It has a Geekbench Score of 766.

 

Raspi 3 by User:Evan-Amos

The Raspberry Pi basically is a a cellphone, without the battery and the packaging. The Raspberry Pi 3 was released in 2016, and has a BCM 2837 with a quadcore ARM with 1.2 GHz.

It has a Geekbench Score of 2128.

In case you need to illustrate how Moore’s Law works, in a practical, touchable way.

3 Comments

Kamergotchi

Leider endet das Spiel morgen: In Kamergotchi muß der spielende Niederländer seinen Abgeordneten am Leben halten.

Kamergotchi, het ideale spel voor de betrokken kiezer. Hou je lijsttrekker zo lang mogelijk in leven door hem eten, aandacht of kennis te geven. Zoveel politieke invloed had je nog nooit!

Leave a Comment