" 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 [email protected], "Tomasz Janeczko" <gro...@...> 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: [email protected] > 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 [email protected], 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 [email protected], "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 > > > http://www.amibroker.com/feedback/ > > > (submissions sent via other channels won't be considered) > > > > > > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG: > > > http://www.amibroker.com/devlog/ > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > >
