I'll try to answer both your requests in this one post.
As I stated previously, even with the ability to get some components wholesale, the savings are minimal, say in the $1-300 range, depending on the processor you get.
As an aside, SAG makes great systems, using SuperMicro mobos, and quality components throughout. You can't go wrong with them.
You're right, I don't think a dual is needed. What I find the most important for daytrading is a ton of good quality RAM. Any streaming data feed grabs an enormous amount of physical memory. In addition, you need a large swapfile, (or pagefile in NT) as VM is used extensively also. If you feel you may want to go dual later on, you can always get the dual mobo, with just one processor, and add the other in the future. However, time may erode the value in doing that, as the next mobo chipset will then be the standard, i.e., BX, GX, etc.
No experience with the Cheetah, though I have heard what you have heard. I have heard good things about the IBM 10,000 RPM, (I don't know the model number) including knowing a few people who have one.
Hope this helps.
Len
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