BRAND OF COMPUTER When purchasing different types of computers, you will likely hear different stories, some good and some bad. Regardless if the story is good or bad, these stories are always based off of the experience of that user. While it may be true that the user had a bad or terrible experience with that computer, all computer manufacturers have had users who have had a bad experience and there is no such thing as a bad or perfect computer manufacturer.
In the 2006 TOP500 list, which ranks supercomputers by speed, the top three supercomputers are as follows:
IBM's BlueGene/L - 360 teraflops
IBM's BGW - 115 teraflops
IBM's ASC Purple - 93 teraflops
Below is the list of various computer manufactures that you can choose for yourself.
Apple (only for Macintosh hardware)
hp (Hewlett Packard)