May, 2009

Technology — Comments Off
21
May 09

SHA1 is epic fail (aka new keys)

I seem to have the worst of luck, in that shortly after I created new GPG keys and published them, someone found a new attack on the SHA1 hash algorithm. This attack is such that someone could probably pull it off if they had the financial resources of a government or large organization. Therefore, I’ve made a new key, 4096 RSA. The key is on the public internets, and is signed by my old key. I will be keeping my old key active until my purchase of 250 business cards runs out, at which point that key will expire. Please make sure to send all emails with my new key.

Also, it is a good idea to use better hash algorithms than SHA1. To do this automatically, simply put the following lines at the end of your .gnupg/gpg.conf file:
personal-digest-preferences SHA256
cert-digest-algo SHA256

Old key fingerprint: E1F6 ADF3 88B4 E5C4 E3B1
New key fingerprint: 37F9 E685 576A CFD3 B08C

P.S.

I had planned on having an inline signature with this blog post, but GPG and/or WordPress and/or Firefox and FireGPG have foiled my plans. Click here to see a text document containing this post plus valid signatures from my old new key and my new new key.

Technology — 15 Comments
10
May 09

Does High Price Attract Mac Users?

I was on the #ubuntu-us-fl IRC channel recently, when one of my fellow geeks put forward an interesting theory: People are attracted to Apple products by a high price. The theory assumes that in our society people usually equate price with quality, and not always accurately. Today I decided to do a little price comparison. I gladly admit that I have a bias towards the Linux operating system, specifically the Ubuntu distribution. However, in this post I will try to let hopefully unbiased numbers speak for themselves, with the exception of my summary at the end.

Below I have the configurations and prices for four machines: an Apple Mac Pro, a Dell XPS 630, The Wild Dog performance desktop from System76, and finally a custom built machine with parts from Newegg (thanks to excid3 for the build specs). Though the machines are from four different OEMs (aka companies that build computers), I configured each to be as close as possible in specifications and performance.

Apple Mac Pro, $2,849.00

  • Processor: One 2.66GHz Quad-Core Intel Xeon
  • RAM: 8GB (4x2GB)
  • Hard drive: 1TB 7200-rpm Serial ATA 3Gb
  • Graphics card: NVIDIA GeForce GT 120 512MB
  • DVD burner: One 18x SuperDrive

Dell XPS 630, $1,679

  • Processor: Intel® Core™2 Q9550 (12MB,2.83GHz, 1333FSB) (Also a quad core)
  • RAM: 8GB Dual Channel DDR2 SDRAM at 800MHz (4 DIMM)
  • Hard drive: 1TB Performance RAID 0 (2 x 500GB SATA 3Gb/s 7200 RPM HDDs)
  • Graphics card: SLi, Dual nVidia GeForce 9800GT 512MB
  • DVD burner: 16X CD/DVD burner (DVD+/-RW) w/double layer write capability

System76 Wild Dog Performance Desktop, $1,089.00

  • Processor: Quad Core Q6600 2.40 GHz FSB 1066 MHz L2 8 MB
  • RAM: 8 GB – 4 x 2 GB – DDR3 – 1333 MHz
  • Hard Drive:  1 TB SATA II 300Mbps – 7200 rpm 32 MB Buffer
  • Graphics card: 512 MB ATI Radeon 4550 PCI-Express x16 GDDR3 (DVI, VGA, S-Video, DVI to HDMI, DVI to VGA)
  • DVD burner: CD-RW / DVD-RW

Custom built machine, $608.90

Note: If you wanted Windows Vista on this machine (not recommended), just add $179.99 to the price. Also, the links to all the parts are listed below, seeing as there is a lot more customization that goes into a custom build.

Biased Summary

I’ll start off with the most obvious and least controversial conclusion: you’d be crazy not to get a custom built machine. Due to the geeky tendencies of this blog, most people reading this are likely to be fellow geeks. Any geek worth their weight in old CRT monitors can put that machine together. If however you are not a geek, surely you know someone who is. For $200 and a few hours to play with all the shiny parts, any geek would be glad to put this machine together for you, and you’d still be saving a huge amount of money.

Now for the slightly more controversial conclusions. I believe that a higher price does play a role in a person’s decision to buy a Mac. It is certainly not the only factor, since as far as OEM equipment goes, Apple is fairly nice. I agree that Apple has some very high quality hardware. However, the hardware in each of these machines is very similar, and all high quality, and yet the Apple machine is $1,170 more expensive than the second most expensive and yet very similar machine. You could even get any one of these machines and put OSX on it yourself if Apple would let you (or you felt like using The Pirate Bay).

Given the fact that all four machines are very similar, lets assume for a moment that the custom built machine represents the price each manufacturer pays to build their computer (not quite accurate, as the OEM’s save money by buying parts in bulk). This would mean that what you are really buying from an OEM is the convenience of having someone else put a computer together for you. That convenience costs you $2,240 if Apple builds it and $1,070 if Dell builds it. The lowest OEM service price is from System76, at $480, which is just over twice my recommended build price from the friendly neighborhood geek.

My numbers are certianly not perfect, especially since it is impossible to get an exactly identical machine from two OEMs. However, even after doing tweaking for any innacuracies in my calculations or configurations, I think your findings will be the same: all OEMs are expensive, but Apple is by far the most expensive.

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