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That Fleetwood Mac Thing

on October 29, 2020

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Playing with "Love That Woman" by Fleetwood Mac

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Location: Balchik, Bulgaria

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Testing DDR3 power consumption

Did a little power consumption testing of 6 different SODIMM DDR3 memory modules. Here are the readings of a Kill-A-Watt kind of device, measuring Watts on a Fujitsu Lifebook s792. - First reading is Watts at idle. - Second reading is average Watts while running MemTest+ 5.01. Hynix 1Rx8 2GB 10600-9-10-B1 (HMT325S6BFR8C-H9 NO AA) Idle: 9.6 / Load: 21.6 - 21.8 Samsung 2Rx8 2GB 10600S-09-10-F2 (M471B5673FH0-CH9) Idle: 9.6 / Load: 24.0 - 24.5 Kingston 2GB 2Rx8 PC3-10600S (SNY1333D3S9DR8/2G) Idle: 9.8 / Load: 23.2 - 23.7 Kingston 8GB 12800/1600MHz (KVR16S11/8and lots of other seemingly random numbers, see pic :) Idle: 9.8 / Load: 24.2 - 24.6 Hynix 4GB 1Rx8 PC3L-12800S-11-13-B4 (HMT451S6BFR8A-PB NO AA) Idle: 9.6 / Load: 23.5 - 23.9 Samsung 4GB 1Rx8 PC3L-12800S-11-12-B4 (M471B5173QH0-YK0) Idle: 9.7 / Load: 23.7 - 24.1 Some takeaways: Size doesn't seem to make much difference. Even the count of memory chips doesn't seem to matter much if at

The 19V-ish DIY powerbank

Ever wished yourself a power bank for your (non USB-C) laptop? I did lately, though I can't complain with the 7200 MAh battery of my Fujitsu Lifebook s792. First I looked up some power bank cases like this , as well as some DIY charge balancing boards. These look like a pretty nice option for use with 18650 cells (of which I have way too many...). One not-bad-looking balancing PCB I still haven't tried... So I ordered myself a few DIY carge balancing boards. However I could not just sit still waiting that to arrive from China. Why not just connect the 5 cells in series unprotected? Reading some opinions of (supposedly) competent people, it looks that the most important part of setting up a multi-cell battery is to pick balanced cells. That is, choose cells that have identical charge-discharge behavior. Just think of what a balancing board does - it cuts charging when a cell reaches top voltage, and it cuts output when a cell drops to termination voltage. That is

Chromium vs. CPU

Lately noticed my laptop fan laboring steadily when Chromium is open. Did some comparison, it seems that the start page (with Google on it) consumes about 4 threads each 35% CPU time... Pretty much the same as if watching a 720p YouTube video. Observed a very similar problem with Opera (again based on Chromium for what I know). Comparable CPU load, the offender is a ridiculous blinking blue icon that encourages you to try the new screenshot feature. When you try it, it stops blinking, then CPU load drops to 1-2%. Happy mobile browsing everyone Make sure to bring a charger with you :p Test machine: GPD Pocket 2 Core m3-8100y (I believe with ramped-up TDP) 8GB RAM Linux Kubuntu 19.10 Chrome and Opera stable releases ca. 21.01.2020

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That Fleetwood Mac Thing

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