
Originally Posted by
builder680
Billy,
Memory sharing WRT graphics is typical of computers with integrated graphics. Instead of a card plugged into a slot (such as a PCI-E slot), these computers come with chips that are part of the motherboard. Big box stores and PC manufacturers call these graphics cards when they try to sell them to you (e.g., a couple of years ago I bought a "gaming" PC at Best Buy... Gateway GT 5432 w/Nvidia 6150 SE graphics... that's an onboard or "integrated" graphics chip, not a graphics card and therefore not all that great for gaming. From now on I will build any and all computers I buy), but they are not. They don't have their own dedicated hardware onboard, nor do they have their own RAM onboard. They use the RAM in your DIMM slots, which is the same RAM the rest of your computer uses. This is what is meant by "shared memory." A graphics card with a decent amount of its own onboard RAM doesn't need to share memory with the system.
In answer to your question, the way to "stop memory sharing" is simply to have an actual graphics card with its own RAM. If that is what you have, then you shouldn't have to worry. If you have integrated graphics, then it doesn't matter how much "dedicated memory" it says it has. It's sharing (and therefore taking away from other things) RAM with the rest of your system. So the question(s) become(s)... "Do you have an actual graphics card, or integrated graphics? If it's a card, what kind of graphics card do you have?"
You list the ATI Mobility Radeon 5145. If I'm not mistaken that's an integrated chip and not an actual graphics card. Therefore to stop it from sharing RAM (using shared memory), you'd have to buy an actual expansion card, provided your laptop even has the open slot for one.
EDIT: I could be mistaken about it being integrated though, because I don't know much about ATI cards and even less about laptops. If it's an actual card then please disregard my preceding paragraph.