8400m gs with 64mb dedicated

hi all
here is the problem
i got nvidia geforce 8400m gs in my dv2690ee notebook
im running vista 32
when i go to the display settings and then the advanced setting
i can find that i have


831mb total graphics memory
64mb dedicated video memory
0mb system video memory
767mb shared system memory


and my problem is with that (((767mb shared system memory)))

does it means that if im playing agame and it need more than 64mb (lets say 128mb) the dedicated memory will take from the shared memory , im i right??

because i heard that the shared memory is not needed by the pc

but when i plaY games such as runes of magic which needs 128mb, the game is so slow and i have to use the low quality so i can be playable

the question is : if it is called shared memory then why the pc cant access this memory?

is it vista that is using all that memory?

if i installed xp professional 32 will it be easier to take from the shared memroy?

if i added more ram memory will it be usefull?



please help im so confused
​

 

In addition to the 64MB of discrete memory your 8400M has, it is dynamically allocating system memory for video purposes. This is part of Nvidia's TurboMemory technology and is perfectly normal.

Note that if you add the dedicated VRAM and shared system memory together, you get the total graphics memory (831MB) that your GPU can access at any time.

Unless your driver has the functionality built-in (rare) or you have a BIOS option for it, there is no way to control the amount of memory your GPU is using. It's best to leave it alone.

 

Yes.

The game is slow because you have an 8400M GS. Shared memory means that if the GPU runs out of memory (64MB in this case), it can use system memory. The problem is that system memory is MUCH slower than GPU memory, so much in fact, that it only helps in really low end GPUs such as IGPs.

No,
No,
Not likely

 

thanks guys
ok i have heard that laptopvideo2go.com drivers can raise the WEI
can u help me choose what driver i can use because my knowledge in these stuff is [edited by mod]

 

The WEI is a useless benchmark. Don't use it as a way to gauge your system's performance.

The laptopvideo2go drivers are quite good and I recommend using one of them. Post your questions on updating your drivers here: http://forum.notebookreview.com/showthread.php?t=258626

 

WOW WOW
laptopvideo2go drivers are the best
do u believe that now i can play runes of magic in high details
without lags !!!
thanks guys

 

Very rarely does a simple driver update allow you to go from low to high settings....

 

i like being rare

 

As mentioned above, updated drivers rarely bring anything but incremental performance improvements. Also, I would recommend ignoring WEI as crash stated earlier as it can give different scores for identical laptops.

 

you r right WEI is unreliable
b4 installing laptopvideo2go driver my score was like 3.5
after installing its 2.8 and i don't care about it because the graphics became much better

 

I think you're seeing such a great performance increase because you may not even have had old drivers