SSD Pricing

The price of SATA III SSD’s is relevant to many types of researchers who find themselves having to use SSD as a form of oversized cache when performing certain data acquisition or processing algorithms. As such, we informally track the price of SSD’s from time to time here. For now, we focus solely on the pricing of the Intel 520 Series SSD.

SSD Pricing (following Intel 520 Series):

2012-March-10
480GB     SSDSC2CW480A3K5     $840
240GB     SSDSC2CW240A3K5     $330
120GB     SSDSC2CW120A3K5     $170

HP50g vs. TI-89

I have used the TI-89 for over a decade, and obtained the HP 50g shortly after its release. I tried honestly to use the HP 50g, and here are a few objections that put me back to the TI-89 (just bought a second TI-89 actually):

  1. The low resolution (blocky/grainy) of the HP 50g is a big detraction from its usefulness as a high-end graphing calculator
  2. Aforementioned low resolution limits length of equations and number of equations you can see clearly on the screen–one of the major reasons for having a high-end calculator is to allow you to enter/check long equations on the screen.

That being said, the HP 50g has a dedicated core of aficionados. HP 50g advocates will present a list of counterpoints to show how I am technically wrong–and their arguments have merits.

Given the feature set and the inevitable eventual sunsetting of the 15+ year old TI-89 series, a new user considering what high-end calculator to purchase should look to the TI Nspire CX CAS.

In closing, I will give strong admonition to students–DO NOT rely heavily on calculators in your math courses–this will only cause you much suffering in later courses. Even if your last math class in college will be Calculus I or II, you will never gain the true richness of understanding if you constantly use your calculator for homework.

A better approach is to do the problems manually, and on occasion check with the calculator.