how not dedicated VGA card work

hi every one

i hope every one ifeel happy

i have question about vga cards

how not didcated vga card work

i have Vaio FW

VGN-FW12M/B

and Vga Card is

ATI Mobility Radeon HD 3470

it is 128 MB but if i wana play a game which require 512 Mb card is it true my laptop support until 800 somthing MB because it is Full HD

sorry may be it seems reduclus to u but i really don't know and i will be thankful and looking forward to have these information

 

I am sorry, but I am not following what you are saying.

Are you asking that since your card has only 128mb of video memory, that if a game requires 512mb of video memory your computer will magically make the extra ram to fulfill the requirement? That answer is obviously no. However, there is shared video memory where the video card can take system ram and use it for the video card, however, this is not the same as actually having a 512 mb card.

 

your laptop can utilize system RAM as extra VRAM, but it will be much slower, and tax the system's overall speed.

 

Okay, so the message is a bit broken but let me try and straighten it out and hopefully answer it for you.

So, you have a Sony Vaio FW with the Radeon 3470 (I have that in my laptop as well except the 256MB version) and you want to know something about game requirements. As far as I know, there is no game that requires 512MB memory on the graphics card. It is more likely that 512MB is the system memory requirements. It is easy to confuse the two, but they are entirely different animals. Here is an example:

Here is the system requirements to Company of Heroes
Windows Xp or Vista
2.0Ghz Pentium 4 (or equivalent)
512MB Ram
Direct X 9.0c compatible 64MB video card with pixel shader 1.1 support
6.5GB of free hard drive space

As you can see from the requirements that there is two different ram amounts listed. The 512 in this case is the system memory and the 64 is the dedicated video memory. So take a look at the requirements again and let us know it was helpful or not.

 

ok thank u all for ur respones

ok i agree it is broken qustion but u understand it will

so let me clearfy my qustion
when my vga card used laptop memory ????

and forget about the game i bring the game qustion as an example that if a game requires certin vga memory

and the vga card is no dedicated so will it takes from laptop memory ?

 

To answer in the most basic way: yes, when the GPU is needs more memory than the dedicated memory it has, it will start using system memory to compensate.

Doing this is inefficient though, because system memory is substantially slower than GPU memory when it comes to the tasks the GPU wants to do. Not to mention eating part of the system memory will slow down the computer if you don't have a lot to begin with.

 

Just a question, what game are you looking at? I'm sure we can tell you if your laptop will be able to run it.

 

Hi, just to increase my knowledge about graphic card. (Mine is 512MB ATI 3650). So, what graphic card does is

1) use its own 512MB to do rendering
2) if 512MB is not enough, it borrows memory from system RAM (rarely happens?). However, now there are issues of communicating with the processor (and the rest of computer) through slower FSB in the graphic card? (the issue of 128-bit?)
3) even if the graphic card use the total 512MB to do rendering, the data still need to wait to be input out through FSB (128-bit issue again), so 512MB RAM and 256MB RAM do not make any difference for ATI 3650.

Do I get the idea right?

Thanks.

Yee Kan

 

Ah ok, you are talking about the limitation of the 128bit memory. Yes, that is often the case that the card can not really utilize the whole 512 mb's when it is stuck with a 128bit memory interface, thereby not providing your system with much if any boost in performance over the 256mb card of the same model.

 

nizzy, I am sorry. I am a reader of this tread. I think the owner of the tread is asking about sharing system memory for VRAM (and he might be confused about whether his graphic card ATI 3470 is dedicated). I am asking another, but related, question. I am sorry for the confusion....

 

To answer you kohyeekan, yes the 128bit bus interface will limit your HD3650 since it will only allow the GPU to properly process 256mb of its own dedicated VRAM. According to some, even if it needs more than that, it will start eating up system memory, regardless of that extra 256mb sitting there.

 

my friends from bottom of my heart i appreciate it very much

u answerd my qustion

and if u aloow me

FYI

there is a web site called " systemrequirementslab "

this web site which i found can test if ur laptop or desktop or whtever able to run a certain game

i make the test on (Crysis Warhead

so even my vga card is 128 mb

it pass the test

and they fave me this informayion about my VGA card

" Video Card
Minimum: Supported chipsets: NVIDIA GeForce 6800 GT or greater; ATI Radeon 9800 Pro (Radeon X800 Pro for Vista) or greater. Laptop versions of these chipsets may work but are not supported. Integrated chipsets are not supported. Updates to your video and sound card drivers may be required.
You Have: ATI Mobility Radeon HD 3400 Series () PASS
Video Card Features - Minimum attributes of your Video Card Video RAM: Required - 256 MB , You have - 892 MB
Video Card 3D Acceleration: Required - Yes , You have - Yes
Video HW Transform & Lighting: Required - Yes , You have - Yes
Vertex Shader Ver.: Required - 2.0 , You have - 4.0
Pixel Shader Ver.: Required - 2.0 , You have - 4.0 "

so as u see it is 892 mb so for sure as u answered before that it will take from system memory while effecting the system performance

thanx alot again