Re: [Flightgear-devel] Budget 'display-only' system?

2005-01-08 Thread Paul Surgeon
On Saturday, 8 January 2005 14:02, Dave Martin wrote:
 Target: 1024x768x32bpp / 35fps.

 AMD Sempron 2200 (1.5Ghz 333FSB, 256kb cache 32bit)
 256MB PC2700 DDR
 GeForce FX5200 128MB (128bit mem bus)

 What do you think? Could the above system make the target res / fps or does
 it need more ram / better gpu / cpu etc?

The FX5200 is the weakest link but it should do the job.

I'm getting at least 30 FPS at SFO on a similar system.
Normally my frame rates are between 40 and 50 FPS.

AMD AthlonXP 2000+ (1.67 Ghz; 266 MHz FSB; L1/128K L2/256K)
256MB PC3200 (DDR400)
Geforce Ti 4200 128MB

BTW : 35 fps is pretty high - I found that 25 fps is still smooth enough 
unless you're doing barrel rolls at 360 degrees per second.

What I can't figure out is why people insist on running FG on ancient *nix 
boxes at 3fps when they can get a really cheap PeeCee that will do the job 10 
times faster.

Paul

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Re: [Flightgear-devel] Budget 'display-only' system?

2005-01-08 Thread Dave Martin
On Saturday 08 Jan 2005 12:37, Jon Stockill wrote:

 I think you'd struggle to maintain 35FPS in complex scenery areas with
 the 5200 - although you could probably replace that with an older
 GeForce4 card of a higher spec or about the same price. The
 motherboard/CPU is perfectly adequate though - I've run flightgear on
 far less.

Thanks for that info.

I had a suspicion that the GPU could be a sticking point.

I'm trying to price it up with all-new components so that someone can 'follow 
in my footsteps' (or not if it comes to nowt)

Obviously, the Ti4xxx series is no longer available 'off the shelf' and their 
equivalent is that FX5600 / FX5700 series. - I only just noticed that the 
5200's have roughly half the transistor count of the Ti4xxx / FX56/5700s :-O

The FX53,5500s are the same deal with only 45mil transistors :-/

So I'm either going to need to get lucky with the suppliers or the price must 
go up.

There is always NVCLOCK http://www.linuxhardware.org/nvclock/ but that usually 
leads to 'molten-gpu-syndrome' ;-)


The goal of this idea is a projected panorama system (min 3 screens) and then 
possibly a modular cockpit system (convertible from an SEP all the way to a 
Multi / Jet).

For projection, I'm looking at building projectors myself. This will be my 
third design; I've already constructed an OHP based one and a higher-quality 
linear projector.

I hope to be using cold LED illumination. - Suprisingly, LED lightsources are 
now feasable as there are 1-Watt(!) white LEDs with built-in collimators on 
the market. You would, of course, require several banks of these. Soon, there 
will be 5-Watt(!!) LEDs on the market of the same design. For 'enclosed' or 
semi-darkroom projection, this is ample.

Here is an example of a compact 'cold' projector using 1-Watt collimator LEDs: 
http://www.cyfinity.com/fgfs/lensview1_sml.jpg (not my design).

Dave Martin.

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Re: [Flightgear-devel] Budget 'display-only' system?

2005-01-08 Thread Erik Hofman
Paul Surgeon wrote:
What I can't figure out is why people insist on running FG on ancient *nix 
boxes at 3fps when they can get a really cheap PeeCee that will do the job 10 
times faster.
First of all I don't insist on running FlightGear on my O2. But I do use 
it for that sometimes.

Now for the reason, when I bought my O2 seven (!!) years ago I could run 
FlightGear at the same framerate as I do nowadays. I think that's good. 
It keeps development within sane borders. Actually I consider my O2 a 
reference platform for FlightGear, if it can handle the program at 5 fps 
or more, it runs great for every rather modern PC.

Erik
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Re: [Flightgear-devel] Budget 'display-only' system?

2005-01-08 Thread Dave Martin
On Saturday 08 Jan 2005 13:08, Paul Surgeon wrote:

 The FX5200 is the weakest link but it should do the job.

 I'm getting at least 30 FPS at SFO on a similar system.
 Normally my frame rates are between 40 and 50 FPS.

 AMD AthlonXP 2000+ (1.67 Ghz; 266 MHz FSB; L1/128K L2/256K)
 256MB PC3200 (DDR400)
 Geforce Ti 4200 128MB

 BTW : 35 fps is pretty high - I found that 25 fps is still smooth enough
 unless you're doing barrel rolls at 360 degrees per second.

 What I can't figure out is why people insist on running FG on ancient *nix
 boxes at 3fps when they can get a really cheap PeeCee that will do the job
 10 times faster.

 Paul

Can I ask what resolution / colour depth you would typically be running 
FlightGear at?

Thanks

Dave Martin

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Re: [Flightgear-devel] Budget 'display-only' system?

2005-01-08 Thread Chris Metzler
On Sat, 08 Jan 2005 12:37:23 +
Jon Stockill wrote:

 
 I think you'd struggle to maintain 35FPS in complex scenery areas with 
 the 5200 - although you could probably replace that with an older 
 GeForce4 card of a higher spec or about the same price. The 
 motherboard/CPU is perfectly adequate though - I've run flightgear on 
 far less.

I was going to comment on this as well.  Tom's Hardware's website has
a number of good graphics card comparison articles; they suggest
very strongly that an FX5200 isn't really a good buy for the buck, and
that *at that price point*, your money would be better spent on eBay
going for a GF4 Ti 4x00 card.

-c

-- 
Chris Metzler   [EMAIL PROTECTED]
(remove snip-me. to email)

As a child I understood how to give; I have forgotten this grace since I
have become civilized. - Chief Luther Standing Bear


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Re: [Flightgear-devel] Budget 'display-only' system?

2005-01-08 Thread Martin Spott
Paul Surgeon wrote:

 What I can't figure out is why people insist on running FG on ancient *nix 
 boxes at 3fps when they can get a really cheap PeeCee that will do the job 10 
 times faster.

Maybe because FlightGear is not the primary application on their
desktop. A used Octane for example definitely has some features
that you won't get on any other platform without spending lots of money
(running FrameMaker, reading audio DAT tapes without the need of
external hardware, easy handling of files of serveral hundred megabyte
size).
Even having an OpenGL/GLUT reference platform at hand apparently proves
to be of use from time to time in order to determine if the application
is at fault or Mesa/DRI/whateverGLUT 

Martin.
-- 
 Unix _IS_ user friendly - it's just selective about who its friends are !
--

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Re: [Flightgear-devel] Budget 'display-only' system?

2005-01-08 Thread Paul Surgeon
On Saturday, 8 January 2005 15:35, Dave Martin wrote:
 Can I ask what resolution / colour depth you would typically be running
 FlightGear at?

1024x768 @ 32bpp (32bpp = 24bit color)

Paul

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