Internet Speed Comparison Chart

Taken without permission from Mobilespeedtest.com

Edit: This is an old chart. It is useful for comparison purposes only. I’m looking for a more up-to-date chart. Leave a comment if you can direct me to one. Gothamghost has also pointed out that results from Speedtest.net vary significantly from results on Mobilespeedtest.com.

Wikipedia has some information here about 4G speeds.

Can’t Install Ubuntu 12.04 on ASRock Z77 Extreme 4

I just put together a new computer with the following components:

  • Intel Core i5-2500K Sandy Bridge 3.3GHz (3.7GHz Turbo Boost) LGA 1155 95W Quad-Core Desktop Processor Intel HD Graphics 3000 BX80623I52500K
  • ASRock Z77 Extreme4 LGA 1155 Intel Z77 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard
  • Western Digital RE4 WD1003FBYX 1TB 7200 RPM 64MB Cache SATA 3.0Gb/s 3.5″ Internal Enterprise Hard Drive -Bare Drive
  • Fractal Design Arc Midi Black High Performance PC Computer Case w/ USB 3.0 and 3 x Fractal High Performance 140mm fans
  • LG Black 14X BD-R 2X BD-RE 16X DVD+R 5X DVD-RAM 12X BD-ROM 4MB Cache SATA BDXL Blu-ray Burner,3D Play Back (WH14NS40)
  • Antec NEO ECO 620C 620W Continuous Power ATX12V v2.3 / EPS12V 80 PLUS Certified Active PFC Power Supply
  • CORSAIR XMS 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model CMX8GX3M2A1600C9

I was able to install Ubuntu 10.04 with no problems, but when I try to boot from the Ubuntu 12.04 Live CD it freezes up. I discovered that I can change some boot parameters which will give me a verbose output during the boot process. To change those settings you hit any key as soon as this appears.

Then you should get this screen. Hit the F6 key to change some parameters. When you hit escape you are able to edit the boot parameters. I’m still working on getting the Ubuntu 12.04 Live CD to boot. I will update this page if I have anything helpful to share. See below for some resources.

The most helpful page I’ve found so far is this one:

https://help.ubuntu.com/community/BootOptions#Ubuntu_CD_Advanced_Welcome_Page_Options

This page has similar information:
https://help.ubuntu.com/12.04/installation-guide/amd64/boot-parms.html

Here is a link to a post on Askubuntu.com that deals with this problem:

http://askubuntu.com/questions/129116/12-04-wont-boot-from-live-cd-or-usb

Blender Cycles

I learned about radiosity sometime around 1996. The first program I used that could light a scene with radiosity was called POVRay. To get it to work you had to set up a whole lot of parameters just right. A few years later I illegally downloaded a copy of Maya. Maya could light a scene with radiosity, (called global illumination). Here again you had to set up a whole lot of parameters just right to get it to work. Besides, I didn’t like downloading software illegally. Then I discovered Blender (free software), but it could not render with radiosity. In 2009 I came across LuxRender. LuxRender will take a scene you’ve created in Blender and render it with beautiful radiosity and physically based materials. It was pretty easy to set up. You just assigned different materials to your objects, create an object which will serve as your light and export your scene using the LuxRender plug-in. Around December 2011, Blender released version 2.61 which included the Cycles render engine. Finally I could render with radiosity without having to export or tweak a lot of settings. Also Cycles allows you to interact with your scene while it renders with global illumination. Every time you make a change it immediately updates the lighting. Like LuxRender, Cycles starts with a very rough approximation of the finally result. As it continues to process the scene the quality gets better and better. For some scenes you may have to let Cycles render for hours and hours to get a good quality result, but boy do I love the results.

Below is a typical Cornell Box rendered with Blender Cycles. It took about an hour to render.

Here is a video of a camera turning around in a room lit by the sun coming through the window. I wanted to complete the render in less than eight hours so I kept the quality very low. Each frame has a quality of 60 samples. For comparison, the Cornell Box above was rendered with a quality of 8,000 samples.