NVIDIA 9800 GT vs 9600 GT

[caminostereo]

My dear colleagues, which I recommend NVIDIA graphics card to buy:

-The "XFX" 9800GT (512 MB)
-The "GYGABYTE" 9600 GT (1GB)

With which of them have higher quality, performance for real-time transitions GPU's Edius 5

I hope your wise opinion, greeting colleagues

[redgum]

You probably won't see any difference between the two in speed. The 1Gb of RAM will be helpful but probably compensated by the throughput of the more powerful 9800.
There will be no difference in quality - not the role of the GPU.

[jaegersing]

The 1GB could eat a large chunk of system RAM if your OS is 32 bit and you have 4GB installed. I would go for the 9800 or a 9600 with less memory.

Richard

[redgum]

Why so? That's contary to what Grass Valley and Adobe are saying. And additional GPU Ram has no effect on any of my system RAM.

[tuyle]

The 1GB could eat a large chunk of system RAM if your OS is 32 bit and you have 4GB installed. I would go for the 9800 or a 9600 with less memory.

Richard

Richard,
The AGP bus link directly to the RAM, but not with PCIe card.
With more RAM it will have better resolution and color depth. This article explain more details: http://en.kioskea.net/contents/pc/carte-graphique.php3

So which one is correct ?

[jaegersing]

Richard,
The AGP bus link directly to the RAM, but not with PCIe card.

Yes I understand that, but the graphics card driver uses system memory as well, near the top end of the 4GB addressable memory space. If you have 2GB or less of SDRAM in your PC then you would not see this, but if you have 4GB you will notice that Windows has much less than 4GB available for applications to use. Apart from the memory used by Windows itself, all the device drivers grab a share of it too. The more memory on the graphics card, the bigger the allocation taken by the driver.

With a 64 bit OS, the addressable memory is much higher, so the device drivers can be allocated addresses that do not clash with the system SDRAM. Depends on the motherboard design though.

With more RAM it will have better resolution and color depth. This article explain more details: http://en.kioskea.net/contents/pc/carte-graphique.php3

Well yes, but for video the resolution and colour depth are already fixed by the video format, they are not being limited by the graphics card memory.


Richard