graphic card Power Mac G5 Dual 2GHz

[zmttoxics]

oh, and 300, I'm not a retard, I know what RAM is for. I also know that more RAM does create HD rendering with less, or no, glitchy spots. Since I clearly stated in my OP that my intent was to be able to run HD without any hiccups, I would say that, yes, 512mb will definitely serve me better than 256. But I digress, I am anxiously awaiting the results.

I love that are standing up for your self, thats cool. But the RAM wont necessarily help with video processing. Video processing is generally CPU work. On video cards, things are generally rendered using a front buffer and back buffer. You see the front buffer, the back buffer is what is going to be shown next, and is typically stored in RAM ready to be sent to the front (this eliminates redraw on the screen like you see in really old computers). When doing GPU processing however, the required data is stored in the RAM of the video card, this is for games and 3d modeling apps mostly where textures / data need be availible to GPU faster for faster rendering.

But again, video processing is typically a CPU handled task and programs like FCP store the frames in system RAM for faster access, so the difference between 256MB and 512MB ram on the video card doesn't mean a whole lot. At least, thats what I remember from graphics programming in college.

 

[greedyhands]

Thanks

Hey, I really appreciat that. I was under the impression that the ram on the vCard was used to hold the data of pre rendered video. I always enjoy learning new things.

 

[zmttoxics]

Hey, I really appreciat that. I was under the impression that the ram on the vCard was used to hold the data of pre rendered video. I always enjoy learning new things.

Well, you can think of it like this, you need enough vram to store the size of screen twice (the buffers) + extra (a lot more if you do 3d work or game ). Which is why systems with onboard video of like 8MB can still watch videos etc, but can't play games for crap (along with speed issues, etc).

 

[divan385]

nVidia 7800 GS freeze display

i have the same model machine (i think) and want to replace my AGP card with a new one - my previous card was 64mb only GeForce FX 5200 - i have had heaps of trouble finding one in australia and finally bought one from usa. a nvidia geforce 6800 gt. 256mb. but now i cant seem to make it work as it requires power from somewhere? apparently you can re-route power from optical drive? i have no idea..
there is heaps of stuff about flashing pc cards to make them work in macs - if you read rest of forum posts.
hopefully we can both get some answers here!

Hi,
Few months ago I had the same problem. My old G5 dual 1,8 Ghz with FX5200
was not able to run HD video, so I bought nVidia 7800 GS AGP video card (PC card flashed for Mac) via eBay (from Australia) and now everything "work perfectly" - sometimes. ( Ha ha).
The problem is: On booting, when the circle stop to rotate display frizes (LG Flatron L192WS) and I must restart pushing power button. I repeat booting for 7-8 times and if I have luck 9th will start up my Mac.
In SAFE MODE there is no problem with booting.

 

[willsfamily4]

To rominator

Did you ever get the results on your tests of the graphics cards?? I have the Xt9800 one and it is only 256mb vram. I was thinking that if I upgraded my graphics card to a 512 MOTION would work better in Final Cut Pro. But I didn't know which 512 card would fit in my G5 Power PC Mac - it has 5GB of memory.

Thanks for your help.