Thanks B --- In [email protected], "b519b" <[EMAIL PROTECTED]> wrote: > > Chris: > > If you are doing optimizations, the most important thing is to have > enough RAM. If your database will not fit into RAM then the speed of > your hard disk will limit your new CPU so that it runs only at 50% or > 30% of its potential. > > How much RAM? 1 GB will not be enough. Lets assume that Windows will > take about 500MB. Let's also assume your AB database is 500MB. Now lets > add another 200-300MB in case you want to run a couple other programs. 1 > GB will be very cramped. But 2 GB "should" be enough. > > Given the price of RAM, I personally would go for 4 GB and never have to > worry. > > b > > > --- In [email protected], "Chris" <yahooshawky@> wrote: > > > > Hi > > I know this is a little off topic and sort of covered in the past, I > > have the following observation and questions relating to an approach > > for my overdue PC upgrade on a budget. > > > > 1. I thought that my trading software including Amibroker was both > > disk and memory bound. I created a small ramdisk and put a sample ASX > > database in there. On my P3 PC there was not a significant > > performance improvement as most of the time appeared to be in AFL > > calculation and screen update. i.e. confirms that AB has a nicely > > optimised database. Scans seem to run at full CPU usage. > > > > 2. My other share program is not as efficient, and appears to be disk > > bound so I know I need to focus on increasing disk performance. AB > > would benefit from this for EOD updates. > > > > The big question relates to determining what type of CPU (AMD, Intel, > > single, multi core, Duo, Extreme etc). Many tests show different > > performance results quite often unrelated to the clock speed. For > > example, reviews seem to be saying that the new intel core 2 duo eats > > AMD's top of the line cpus. But when I look at the comparitive > > results and focus on floating point or integer calculations or say > > generation of pdf file the results say different. > > > > Yes, one brand/model CPU might be great for those playing games or > > doing video editing, but how does that relate to you and I who have a > > PC to earn a living trading? > > > > One method is to just buy a top of the line model. But, for something > > that in our application may only be 10-20% slower at way under half > > the price is better value, upgrade each year and still save money... > > > > Any thoughts are most welcome. > > > > A reference to a particular benchmark test from say: > > http://www23.tomshardware.com/cpu.html? > > modelx=33&model1=433&model2=694&chart=191 > > I selected the virus scan as an example as it is simple data > > crunching and file IO. Notice that an AMD6000 performs well to the > > cpus 3-4 times the price. > > > > All the best with your trading > > > > regards > > Shawky > > >
