>>>>> requirement of 1GB for years.) What is worse, the RAM is shared by the
>>>>> CPU
>>>>> and the GPU, in other words, the GPU doesn't have its own RAM (as is
>>>>> customary in a PC). This means that graphics and other game data
>>>>> have to
>>>>> share the 512 MB
>
>>> It has advantages though, like not needing to transfer any data between
>>> the CPU RAM and the GPU RAM (which is a major bottle-neck in a PC,
>>> causing many complex algorithms to be developed). On the xbox the CPU
>>> can update textures and meshes directly without needing to either write
>>> a complex vertex/pixel shader or transfer over large amounts of data
>>> per-frame.
>>
>> Not at all in the case of the PCs. The GPU don't see the memory used by
>> the CPU, and the CPU don't see the memory used by the GPU.
>
> I don't know about PCs with shared memory (I can imagine they are not
> designed for gaming speed!), I was talking about the xbox360, which is
> specifically designed for gaming speed (with compromises that wouldn't
> work for a normal PC).

True.


Alain

Post a reply to this message