Allocating RAM to VRAM?

[Modded Mouse]

Hi,
I'm pretty ignorant when it comes to understanding operating systems, but when I recently bought GTA V, I have been struggling to run it on limited graphics capabilities (512mb). What confuses me is my computer has 10 gb of ram, and apparently little VRAM. I found out that I could potentially allocate some RAM to VRAM, but I'm not entirely sure if I can.
Here are some specs that I do know and I'd appreciate if anyone could let me if and how I can increase my Graphics Memory;

Computer Model: HP p7-1299c

BIOS Menu: http://support.hp.com/us-en/product/HP-Pavilion-p7-Desktop-PC-series/5187022/model/5231669/document/c03656066/

Graphics Processor: AMD Radeon HD 7560D

Essentially, does my BIOS/Graphics Card allow for me to increase my VRAM?

[_I_]

you can dedicated more system ram to the apus gpu, but its not worth it
just let windows manage it, when the apus gpu needs more ram it will give it what it needs
for any games that need more vram, the apus gpu and cpu will not be strong enough to use it effectively

[[AU] Tabris:DarkPeace]

Allocating RAM to VRAM?

DirectX, AGP and PCI-Express cards do this automatically.
- The frame buffer has to fit within the cards VRAM, and with 512MB it will.
- Textures can actually be stored in RAM and accessed via the GPUs address space.

Basically, this is already happening & you don't need to do anything to enable it.

The problem is that system RAM is much slower than video RAM (usually) and on a much thinner bus width, etc.

[Rove]

Your APU should use up to 4GB I think.

So it's not short on RAM at all. It has none of it's own, 0.5GB dedicated from system and 3.5GB shared from system. That should be default.

So anyways your performance is not hurting from VRAM.

Your performance is hurting cause you probably just need more powerful graphics. Like a real dedicated card. I'd suggest a GTX 960 or a R9 270 as the minimum to aim for. Either will require a 500W 80 Plus PSU or better with enough PCIe 6 pin connectors. Better cards may require even more power.

[_I_]

tha apu is not fast enough to effective use over 1-2g of vram

an apus gpu has no dedicated vram, its all system ram thats shared with the gpu

ram speed/timings have a huge effect on apus gpu
going from 1333 cl11 to 1866 cl8 will be more than double the gpu performance

[vadim]

Publicado originalmente por TabrisDarkPeace:

DirectX, AGP and PCI-Express cards do this automatically.

OMG. What do you mean by THAT? I sorry to say that, but your sentence is completely meaninless...

[˜lokkandload˜™]

I know on laptops Ram can be dynamically allocated as VRAM using DVMT (Dynamic Video Memory Technology) Not sure if this is possible with desktop GPUs. For example my older Toshiba Laptop has an Nvidia GT230m with 1Gb Dedicated, but has a Dynamic draw from the system allow an additional 1.5Gb. The total combined VRAM discreet and dynamic was something insane like 2814 total available. It could play MW3 and BF3 quite easily.

[[☥] - CJ -]

Publicado originalmente por vadim:

Publicado originalmente por TabrisDarkPeace:

DirectX, AGP and PCI-Express cards do this automatically.

OMG. What do you mean by THAT? I sorry to say that, but your sentence is completely meaninless...

Just because you dont understand it doesnt mean its not true or it doesnt make sense

[Rove]

Publicado originalmente por ☥ - CJ -:

Publicado originalmente por vadim:

OMG. What do you mean by THAT? I sorry to say that, but your sentence is completely meaninless...

Just because you dont understand it doesnt mean its not true or it doesnt make sense

It means that generally about 1/2 your RAM will be automatically allocated to your GPU except in the case of integrated graphics (like yours) because those only take a fixed amount. In your case that's 4GB total.

[_I_]

when the apu needs 4g of vram, your fps will be well under 1

[Rove]

Publicado originalmente por _I_:

when the apu needs 4g of vram, your fps will be well under 1

That depends on the game and how well it is programmed. It's possible to use 4gb at 60 fps.

[_I_]

keep dreaming or looking at the floor

[[AU] Tabris:DarkPeace]

Just for the records:

NVIDIA GeForce GTX 770
VRAM: 4096 MB
Shared system memory 3831 MB
Total available graphics memory 7927 MB

You can also have Dedicated system memory allocated to GPUs, which I don't have with the GTX 770.

DVMT (Dynamic Video Memory Technology) is an Intel specific technology, which is quite similar to the above AGP / PCI Express standard way of doing things.

AMD APU/iGPU use similar tricks.

DirectX 12 under Windows 10 will increase the performance of video cards that use system memory... apparently by a large margin. (Which may equate to +15% or less).

[˜lokkandload˜™]

I think I just said that too...hmmm!