You may be thinking of this (Limulus Project)

Have a look at The Limulus Project. You will be able to buy one of these real soon.

Been there done that, maybe want to consult Linux Cluster Urban Legends before you continue down this path

Proof of concepts are nice, but when the GPU is firmly planted in the CPU, this will make more sense. The PCI bus can be a bottleneck in these types of situations. AMD fusion is a great example of this idea.

That is the point of the free version. How else do you get people to read and talk about your book in the sea of crap. If it is worth reading it will get noticed because there is no cost barrier. Those, like me that want bound versions of good books will pay for the paper.

Many people first used Windows not by choice, but by mandate -- there was no other option and the Microsoft monopoly made sure it stayed that way. (unless you bought a Mac) My guess is many people have found the MS experience frustrating and a general PITA, but there was never any other choice. They had to live with the shoddy time wasting experience Microsoft called computing.

Now given the option of having their "desktop experience" on their "phone" or "pad" I am sure many people are interested in real alternatives. My prediction is no matter how hard Microsoft tries to play the "we are the future of computing because we invented everything" song and dance, most users will chose iOS and Android for exactly that reason. Hi-tech karma at its best.

Check out the Limulus Project

Forgot this link! Why Linux On Clusters?

The reasons Linux is so successful on HPC clusters are numerous. Historically, Linux was the best solution for many reasons. In particular, HPC clearly demonstrates why "open" is superior to closed approaches to a markt.

Here are some numbers from a post I made last week.

I just wrote and article Low Cost/Power HPC using Atom processors and Mini-ITX boards. The first table is rather interesting (HPC = High Performance Computing):

The Nehalem Xeon runs 1.8 times faster, generates 7.3 times as much heat and costs 22 times as much as the D510 Atom. The performance is 7.7 times faster, but when you factor in the price-to-performance the Atom is 3 times better than the Xeon solution. Interestingly, the TDP/performance ratios are almost identical for both processors.

And Bill, I would say you were not the only company to go down because you believed: ... open source has been great for hobbyists to get involved ... Sun had the ball and dropped it, too bad because it was a good run.

I think most people have the wrong idea about the "Butterfly Effect." IIRC, the weather scientists were talking about the precision with which they would need to know air movement to make longer term predictions. i.e. the longer the forecast the more digits of precision are needed in your measurement. They were referring to the level of precision and not to butterflies causing a tornado or other such nonsense. Unfortunately, the media like to report it otherwise.

1. All liquids will, at some point, leak or spill
2. When you are convinced that immersive liquid cooling is the future, read rule #1

For special and expensive systems such ideas may be useful, but it is hard to beat air for commodity systems because it is free, there is plenty of it, it cannot spill, it does not put excess load on the floor, it is inert (to electronics), and it can be easily recycled.