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" A few personal thoughts:
1. The 2.93GHz costs $470 more than 2.66. I doubt that very many of us can tell the difference without a stopwatch. "
For a single calculation, you are correct. But if I am doing a massive exhaustive optimization that lasts, say, several days - won't the 10% speed increase on the processor make as much of a difference? Or, is that not really a factor at all, as far as AB is concerned?
I would think there would be a speed-up in the overall processing time for a large optimization, with a slightly faster processor, but don't know exactly how it works.
--- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@xxx> wrote:
>
> Regarding 2) operating system does NOT influence raw execution speed of applications,
> at least not to that degree. The difference may be if application relies on system components
> like DirectX to do its job (i.e. GAMES), or .NET or Java,
> but business application running native machine code like AmiBroker
> once it gets the processor, it runs at full CPU speed regardless of operating system.
> The only influence may be file access.
> All in all, AmiBroker runs at exactly the same speed on Vista as on XP.
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message -----
> From: Keith McCombs
> To: amibroker@xxxxxxxxxxxxxxx
> Sent: Thursday, March 12, 2009 8:51 PM
> Subject: Re: [amibroker] Re: OT: Computer recommendation for AB optimizing
>
>
> A few personal thoughts:
> 1. The 2.93GHz costs $470 more than 2.66. I doubt that very many of us can tell the difference without a stopwatch.
>
> 2. I don't know about running AB, but in many published speed tests, Vista64 takes about 50% longer than XP64.
>
> -- Keith
>
>
> ozzyapeman wrote:
> Thanks. I was looking into i7 based-PCs. But aren't all i7's quad-cores to begin with? And apparently the OS sees an i7 as 8-core due to the way it's designed.
>
> Dell seems to have a good deal on i7 XPS desktops at 2.93 Ghz
>
> --- In amibroker@xxxxxxxxxxxxxxx, dingo <waledingo@> wrote:
> >
> > Intel dual core i7 with fast clock - AB only uses 1 core. 3gig mem. Intel
> > SLC flash (if you've got the money otherwise WD Raptor). Medium video card.
> >
> >
> > d
> >
> > On Wed, Mar 11, 2009 at 12:57 AM, ozzyapeman <zoopfree@> wrote:
> >
> > > I should add that I need to run exhaustive optimizations, as opposed to
> > > CMAE or using Fred's IO, as my variables are discontinuous - not traditional
> > > indicator-type variables.
> > >
> > > In my parallel dream life, I run AB Ultra Professional 7.0 on 8 state of
> > > the art graphics cards, with thousands of processors, 500,000 times faster
> > > than good old AB 5.24.
> > >
> > > But I digress. ;-)
> > >
> > > In the real world, what is the best I can do?
> > >
> > >
> > > --- In amibroker@xxxxxxxxxxxxxxx, "ozzyapeman" <zoopfree@> wrote:
> > > >
> > > > Now that I am just about trading full time, my main PC has become a
> > > dedicated trading computer. That only leaves me with a clunky second PC
> > > (6-years old) for doing offline optimizing. And it's waaay too slow.
> > > >
> > > > So I am in the market for a new PC, and want to get something powerful,
> > > but don't want to overpay for stuff that won't be used. For example, 8GB of
> > > RAM sounds great, but if WinXP only uses 4GB (or 3?) then I imagine the
> > > other 4 GB just goes to waste?
> > > >
> > > > If I plan to use this PC mainly for offline optimizing and backtesting,
> > > what are the recommended specs? I want as much speed as I can possibly get.
> > > My optimizations tend to be humongous, taking days on a quad core.
> > > >
> > > > Any hardware gurus please feel free to chime in:
> > > >
> > > > - RAM?
> > > > - Quad-core vs Eight-core?
> > > > - OS?
> > > > - HD type (flash vs mechanical)?
> > > > - any other hardware/software suggestions for increasing speed?
> > > >
> > > > Thanks!
> > > >
> > >
> > >
> > >
> > >
> > > ------------------------------------
> > >
> > > **** IMPORTANT PLEASE READ ****
> > > This group is for the discussion between users only.
> > > This is *NOT* technical support channel.
> > >
> > > TO GET TECHNICAL SUPPORT send an e-mail directly to
> > > SUPPORT {at} amibroker.com
> > >
> > > TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
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> > >
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> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> >
>
------------------------------------
**** IMPORTANT PLEASE READ ****
This group is for the discussion between users only.
This is *NOT* technical support channel.
TO GET TECHNICAL SUPPORT send an e-mail directly to
SUPPORT {at} amibroker.com
TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
http://www.amibroker.com/feedback/
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