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Video card memory differences


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#1
anoobrew

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when it come to gaming does 512 mb make much of a difference compared to 256?

will the 6800 gt w/512 mb perform better than a 7800 gt w/256 mb

or the 6600 w/512 mb vs 6800 w/256 mb
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#2
austin_o

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In theory, yes. Simply stated, more memory is available to manipulate the video faster. This is important to gamers. For info on specific cards and how they perform, use google and find some reviews.
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#3
malerba28

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Hey,

After reading this i want to just make a couple things clear.
I understand that a 512 Mb graphics card is obviously better than a 256 Mb graphics card, but is that the most important factor when searching for a video card. I always looked at the Memory clock in Mghz and the Core clock, not really knowing all that much about either.

Clear this up for me please.
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#4
anoobrew

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512 is supposed to be better but benchmarking charts show that the 7800 GT with 256 MB performs considerably better than the 6800 Ultra 512 MB
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#5
malerba28

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Hmm.

Its almost as if no one knows, or no one can provide a concise answer.

Malerba
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#6
Tempest210

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I read in PC Utilities magazine a while back, were they did a review of two ATI Radeon 9800 AGP cards, one with 128 Megs of RAM, the other with 256. They ran both cards on the same rig.

The 256 Meg card was a bit longer, and raised the case temp by a few degrees, but other then that, the benchmark scores and FPS for the games tested were identical.

They contributed this to games not being able to saturate the 8X APG port. They did note that this might change in the future.

I’ll try to find that magazine again and post all the test scores.
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#7
Tempest210

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With respect to the difference between video cards with 256 Megs of RAM vs 512, here are some bench marks scores that show little or no difference, except of course the dollars spent and the card used. The Sapphire Hybrid X800 XL 512MB was listed at $450 and the XFX GeForce 6800 Ultra 512MB was priced at $800.

These numbers from the Aug 2005 MaximumPC magazine.

Card Used: Game Bench Mark Scores.
Sapphire Hybrid X800 XL 512MB - Halo 1.06 - 53.6
DOOM 3 - 30.1
Far Cry 1.31 - 60.9

Radeon X800 XL 256MB - Halo 1.06 - 54.9
DOOM 3 - 31.0
Far Cry 1.31 - 60.0


XFX GeForce 6800 Ultra 512MB - Halo 1.06 - 72.0
DOOM 3 - 44.6
Far Cry 1.31 - 66.3

GeForce 6800 Ultra 256MB - Halo 1.06 - 71.1
DOOM 3 - 43.5
Far Cry 1.31 - 62.0


3DMark05 for the Sapphire X800 512 - 4,804

3DMark05 for the Radeon X800 256 - 4,948

3DMark05 for the XFX GeForce 512 - 5,767

3DMark05 for the Geforce 256 - 5,536

Note: The Sapphire XL is based on ATI's midrange components.
The XFX GeForce is nVidia's top-shelf hardware. As noted by the price.

Edited by Tempest210, 13 October 2005 - 02:44 PM.

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#8
jrm20

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I know the answer lol.


What matters most in a video card is the GB/sec, which is the Gigabytes per second or rather the bandwith.

It is actually the final number of how fast the overall speed of the card is, ect...

it is Memory Clock, Memory Size, Memory Interface, Memory Type, agp 4X/8X or pci express, and the
RAMDAC all added together and thus the final outcome is the gigabytes per second...

lmfao


Always look at the gigabytes per second when looking at the speeds, it matters most because it is the final number.

:tazz:

Edited by jrm20, 15 October 2005 - 11:55 AM.

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#9
jrm20

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Anyone find this helpful at all?
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