Undervolting and a notebook cooler

Posted Friday, October 24, 2008 at 06h03 in Computers

Over the past few weeks, Rukia (Sony Vaio SZ480) has been running quite hot (up to 94 degrees C) when at full load with video intensive applications. That’s pretty insane. This week I finally got around to addressing this issue. I bought a Zalman notebook cooler, which brought the temps down to around 86C at full load, and then configured RMClock to undervolt my 13 FID (max) VID to 1.0375 V (from the default 1.1625 V), as well as the subsequent lower FIDs (I was able to run 11 FID at the minimum 0.9500 VCore allowed by the BIOS), and now Rukia never goes above 78C at full load. (She hovers around 50C on idle.)

I’d recommend anyone with a laptop to at least undervolt their CPU. You’ll prolong battery life, decrease energy costs, increase the lifespan of the hardware, and help save the environment– all at no cost to performance! Here’s a nifty guide to follow. It’s written for Vista, but you can extrapolate it to work for XP without any problems.

Firefox 3, userchrome.css, and #bookmarks-menu

Posted Sunday, August 10, 2008 at 05h37 in Computers

firefox3I finally got around to installing Firefox 3 on my laptop just now, and have spent the last several minutes trying to figure out why my userchrome wasn’t working like it did in 2.x.  I’m used to having all buttons, menus, and the address bar on a single line at the top of the window, so that I have more vertical space to display content.  However, that means I need to cut out unnecessary menu items like the Help, View, Edit, History, and Bookmarks.  (I use the collapsible All-in-One  Sidebar add-on for all that functionality.)  Anyway, after installing FF3, the Bookmarks menu came back.  I checked my userchrome.css file and it was the same as before.  Then I googled for at least 5 minutes before I found a user comment that mentioned FF3 had changed the css name for the Bookmarks menu from #bookmarks-menu to #bookmarksMenu.  Ugh, why?

MPAA, bittorrent, hacking, and backstabbing

Posted Monday, October 22, 2007 at 10h49 in News, Computers

All the elements of a good story.

[The court] ruled last May that TorrentSpy must begin saving the internet addresses and download activity of its U.S.-based users, and turning over the information to the MPAA in pretrial discovery. In response, TorrentSpy began blocking U.S. users, and made changes on its site to protect user privacy — drawing a fresh burst of outrage in legal filings by MPAA lawyers earlier this month.

I’m particularly curious how the guy was able to intercept emails before they reached user inboxes on the server.

PS2 Hacking Notes

Posted Sunday, July 22, 2007 at 21h15 in Computers, Entertainment

I hacked my PS2 a long, long time ago to play games off the hard drive and use the SNES emulator. Because it’s not often that I install new games, each time I want to do so, I forget what I need to do and end up spending 30 minutes searching for files and instructions. Well, enough of that– I’m going to write down some notes here to help me remember what to do, even if the PS2 is so last-generation and I may never want to do this again. (Read on …)

All I want for Christmas…

Posted Friday, June 1, 2007 at 10h13 in Electronics, Computers

… is this thing.

Woman sues Microsoft for deceptive Vista marketing

Posted Wednesday, April 4, 2007 at 16h21 in News, Computers

*rolls eyes* Get the story here. This lady says she bought a computer with a “Vista capable” sticker on it, and is suing Microsoft because it can only run Vista Home Basic, not Vista Home Premium. She should go out and buy a Mercedes C230, then sue Mercedes because it only has 200 hp and not 600 hp like the Mercedes SLR McLarren. I hope someone slaps her.

The math behind Google’s pagerank

Posted Friday, February 23, 2007 at 17h23 in Computers, Entertainment

Pekkle sent me a link a while ago to an article at AMS about how Google determines the importance of a page, also known as its pagerank. It’s actually a very interesting paper and a pleasure to read, especially the first few pages where the author takes you through some elementary logic to arrive at an elegantly simple representation of the entire world wide web’s pageranks as the eigenvector of a square matrix described simply by the number of links on each page. If you’re like me and derive gratification from seeing real world problems reduced to abstract mathematical constructs, you’ll have a blast with this one. I also found this short review of eigenvalues and eigenvectors helpful, as it’s been a while since I’ve touched any linear algebra.

Introducing Rukia

Posted Thursday, February 22, 2007 at 19h33 in Personal, Computers

Vaio Rukia

At the end of last year I decided to splurge on a new laptop. I was biased against anything Sony from the outset, mainly because I wanted something different from my previous laptop, and Sonys are generally overpriced. However, the more I researched, nothing could beat Sony’s SZ series of laptops (which are customizable much like Dell’s) for my specific needs. What I really cared about was getting a decent Core 2 Duo (i.e. T7400) with something other than lackluster on-board video (i.e. nVidia GeForce Go 7400) in a lightweight package (i.e. under 4 lbs). The Dells, Apples, and Lenovos all couldn’t fit this bill, so I went with the Sony SZ480.

Desktop as of 2007.02.22 Wallpaper as of 2007.02.22
Screencap of my desktop
 
My current wallpaper

Continuing my tradition of naming computers after anime characters, I named my new laptop Rukia after the character from Bleach, because she’s lightweight and packs a big punch. She also has black casing, which resembles Rukia’s black hair, and you know how rare black hair is in anime these days. ;) Besides the essentials, she also has a built in camera, convenient wireless and “stamina/speed” switches, a multi-card reader, a fingerprint scanner, and much awesomeness. :)

My home network diagram

Posted Wednesday, February 21, 2007 at 01h24 in Personal, Computers

Visio-QGS Network Diagram (sanitized)Drawing up a network diagram of my home LAN has been on my to-do list for a while now, and tonight I finally got around to it. I drew this up using Visio while watching the Nuggets get steamrolled by the Spurs. Any device with an IP address is included here, along with display devices for the heck of it. IP addresses have been x-ed out for privacy and security reasons. (Even though it’s on a LAN, I’m paranoid like that.)

New York Times article on Tencent and QQ

Posted Monday, February 5, 2007 at 11h28 in News, Computers

Apparently Tencent is the hottest Internet company in China with services that include QQ, a mobile IM service, and this New York Times article describes its ascent to stardom and why it was able to beat out the likes of Google.

One of the figures the Times reports is that 70% of Internet users in the US are over 30, whereas 70% if Internet users in China are under 30. Not that I don’t believe it, but how do they get these figures? It’s not like people broadcast their age each time they send packets over any given network interface. (Translated for the non-geeks: People don’t always advertise their age when sending email or IMs, or during casual Internet browsing.) The age data that does exist out there are mostly likely from parents who sign up for Internet service so their kids can use it, or from kids who create accounts with fake birth dates so they can access that “special” content. The only accurate (though not necessarily precise) method I can think of is surveys of random households, which I doubt they did.