x86 memory allowance

[Clum]

I've always been under the impression that an x86 system could address about 4gb, but that also includes whatever VRAM you happen to have. So if you had 4gb ram and a 1gb graphics card, you would only be able to use 3 of your 4gb memory.

Is this totally wrong and infact the reason you can only have around 3gb available for use on an x86 system fitted with 4bg is that the extra gigabyte is being used for running the system ect?

Sorry, I'm just having one of those idiot moments where something you always believed in might not be true. Like the whole santa fiasco. There's no kids on here right?

 

[Clum]

Right of course, I just simplified my point to get it across.

So I was right then....the video memory is a factor?

 

[Clum]

I do run x64, the reason I ask is that someone was trying to tell me that vram isn't a factor at all unless it is onboard memory.

I can go and serve him a nice hot cup of shut the **** up now.

Thanks!