Because with that GPU you get a lot more performance (people had no problem paying "a few hundred dollars more" last gen to get the PS3 over the 360 when it came out). Plus, a PC is used for more than just gaming. A high-end PC can be built for $800-900 that will outpace either the PS4 or the Xbone for years to come. Not to mention that the software is much cheaper, and online is free. And PC is backwards compatible with games of all generations, and even older consoles.

I was just going to say that all that works differently on PS4 cause the PS4 writes directly to memory. But you said it.

However, Pcs run better if they can cache GPU data on system memory and send it to the GPU when needed cause thats faster than having to read all that data from storage whenever its needed. But since the PS4s GPu can write directly to memory, all it needs is the reder order from the CPU. data cahced in memory is basically just waiting for the GPU to access it. And in some cases the GPU doesn't even need permission from the CPU (compute).

Having said that, I still think its not actually right to call GPU based data a system resource even if its not yet being used by the GPU. Especially in the caeo os a PS4 which works differently from PCs. Cause every game engine still runs everything throug the CPU. The CPU still has to simulate the entire frame before the GPU draws i anyways. The way I see it, is that when looking at memory use in consoles, just keep it simple and look at what is activelu using memory at anytime andhow much of it its using. If you do that, you will find that the GPU is always using as much as 2x the amount of Ram that the CPu is using at anytime. Its has been said before, the GPu is way more important for consoles than anyting else.

PCs have the advantage that was necessitated from a disadvantage to go about this differently. Like I said earlier they can cache data to system ram and send it to the GPU ram when needed cause thats faster than getting it from storage. This was made necesaary because of how much more CPU memory PCs have as opposed to their GPU ram in the past. It allowed for more efficient use of the GPU and took advantage of teh amount of RAm that is actually left idle on the CPU. Till this day its still done this way cause games really don't need up to 4-6GB of CPU memory to run. Most of that memory on the cpu is used as a cache for the GPU.

I cansee we agree on some things, and diswagree on some. Zet's end it there, eh