Hello,
You are free to experiment with your own money, but myself, I would stay clear from such
"experiments".
There is a reason why PCIexpress 16 was developed *especially* for purpose of
using it for graphic cards- it has bandwidth of 16GBytes/sec (
that's 16000 * 8 Mbits per second = ) thats 266 times faster than USB 2.0.
Best regards,
Tomasz Janeczko
amibroker.com
On 2010-07-24 18:15, Keith McCombs wrote:
Perhaps the eVGA driver is compressing the data before transmitting on USB 2.0,
followed by decompression in eVGA hardware?
The specs for the card say,
Features
Features Lossless compression
High-performance DDR Memory
Ultra low power (Works off USB - USB Powered)
No GPU / uses virtual driver
USB Power / Plug in and Play
Up to 1600x1200 resolutions
Multiple displays up to 8
Specifications
Video System Min: 1024 x 786
Max: 1600 x 1200
Specifications CRT, LCD, Projector Displays
VGA, DVI Display support
32-bit Color Depth
Ability to Clone or Extend an all directions
Standard and Widescreen ratio aspects
BTW, it is available at newegg.com for $70 plus shipping, or Recertified for
$20 (after mail in rebate, if you remember to send it in) plus shipping.
-- Keith
On 7/24/2010 10:32, Tomasz Janeczko wrote:
Hello,
USB 2.0 for video? It is too slow. 1280x1024x32 bits @ 30 frames per second
means 1258 Mbit/sec.
USB 2.0 speed limit is 480Mbit/sec.
Best regards,
Tomasz Janeczko
amibroker.com
On 2010-07-24 12:09, Neil Wrightson wrote:
Hi,
A great option that I use for additional monitors is a video card that uses DisplayLink technology, such as the EVGA box (that's what I'm using)
http://www.digitalyes.com.au/prodView.asp?idproduct=49733 <http://www.digitalyes.com.au/prodView.asp?idproduct=49733>
This allows you to run multiple monitors using a USB connection. No internal
video cards (other than the primary monitor).
Great for charting etc. Do a search for Displaylink on YouTube.
I started with the http://www.digitalyes.com.au/prodView.asp?idproduct=31378 <http://www.digitalyes.com.au/prodView.asp?idproduct=31378> but found they did
not work to well with my layout.
Regards,
*Neil Wrightson.*
----------------------------------------------------------------------------------------------------------------------------------------------------------------
*From:* amibroker@yahoogroups.com [mailto:amibro...@yahoogroups.com] *On
Behalf Of *Rob
*Sent:* Saturday, 24 July 2010 7:48 PM
*To:* amibroker@yahoogroups.com
*Subject:* [amibroker] Re: New System Question
Paul,
That was super helpful. Thank's very much.
Yeah, the little bit I'm stuck on at the moment is the video card. I need
to run 3 monitors so I guess I need two cards. I don't need anything
spectacular on the 3D front clearly. Just a fast an solid card for charting
etc. Any suggestions...? Or does your original choice still apply.
I notice you put in 12Gb of memory!!! Wow. I thinking of reducing the
memory of my new system. I have been running an 8Gb memory Mac Pro and the most
memory I have seen myself use if about 2.7Gb of physical memory... so I'm
thinking 6Gb will be enough. Maybe you have some very large AB databases or
lots of symbols...? (I only look at about 30).
Thanks again
Rob
--- In amibroker@yahoogroups.com <mailto:amibroker%40yahoogroups.com>, Paul D
<notanaiqgen...@...> wrote:
>
> Hi Rob and other system builders,
>
> In 2009 I built my own i7 920 and overclocked it to a very very stable
3900
> megahertz. I have XP 64 bit on it.
>
> In a Tradestation forums thread I posted a very detailed shopping list
from
> Newegg of all the parts I used (more or less) and show that it can be
done very
> cheap. In my opinion, the 920 version is (or at least was) the most
affordable
> in terms of bang for your buck once overclocked. I had some problems
getting
> things cool enough with all 8 virtual cores going, so I turned off the
> hyperthreading and just run with 4 cores.
>
>
> Attached is a PDF of my shopping list complete with colorful pictures of
my i7
> 920 build during and after. FYI, I was going for lowest price rather than
the
> very nicest stuff, though I did not skimp on mobo, power supply, CPU, or
memory.
> The case, graphics card, and fans were not the best (or quietest).
>
>
>
> Hope this helps.
>
> Paul
>
>
>
> ________________________________
> From: Rob <sidharth...@...>
> To: amibroker@yahoogroups.com <mailto:amibroker%40yahoogroups.com>
> Sent: Thu, July 22, 2010 2:38:22 AM
> Subject: [amibroker] New System Question
>
>
> Hi TJ,
>
> I am considering building myself a new computer system. Basically I am
running
> AB on a Mac Pro right now. 8GB Ram (ram is not one my constraints). I am
running
> 2 x quad core Intel Xeon X5365 2.99 Ghz processors.
>
> I use AB for real time day trading... (not backtesting)... but I am
pushing the
> core I run AB on to the max pretty much (My performance indicator in AB
runs
> pretty consistently between 200 - 260%... I also have another 4 charts
running
> on another instance of AB to utilise another core.
>
> Question is, in building a new system, what should I be looking for
maximise AB
> performance....? Obviously I am looking at the i7 range of processors.
However,
> given that I can only utilise one core per instance of AB (and I want to
run as
> few instances of AB as possible), should I less concerned with going for
more
> cores and more concerned with perhaps overclocking the cores I do have...?
>
> I could go the whole hog and overclock a Intel Core i7-980X Extreme
Edition to
> 4Ghz... I don't know if that would be overkill given there would be a lot
of
> processing power I couldn't access....? (although having 12Mb of onboard
cache
> looks attractive since I could run larger DB's in AB more quickly).
>
> Any other critical issues I should be thinking of in terms of speed
running
> AB...?
>
> Thanks for your time.
>
