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Thanks B
--- In amibroker@xxxxxxxxxxxxxxx, "b519b" <b519b@xxx> 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 amibroker@xxxxxxxxxxxxxxx, "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
> >
>
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