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disolitude on 23 February 2013
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Superman4 said:
disolitude said:
Sharu said:
disolitude said:
This is good news for the whole futureproofing of PS4.

But before people start saying this is an immediate game changer and how Killzone would look 5X better if they had 8GB ram to work with...please ask me how much RAM a game like Battlefield 3 uses, completely maxed, and running on 3 screens on PC at 5760x1080 resolution.

Hint - its less than 4 GB.


Yeah, I thought the same... Now my PC is 4Gb of RAM... If I'll change it to 8 the games will not be 2x prettier, just a little bit faster loading... Only software on my PC which uses a lot of RAM are big soundbanks which should be in the memory while I'm working with them... So all the hype about extra RAM looks very strange to me from the gaming point of view...

Yeah excatly...

More GPU RAM (VRAM) and you may be able to get deliver more frames per second (if you have the GPU power to push those frames out). 

But PS4 is going to hit the CPU and GPU bottleneck waay before it can utilize more than 2 GB of VRAM.

However good news here is that Killzone is supposed to be 1080p@30 fps...So this may be able to give them 60fps if VRAM and not GPU/CPU were the bottlenecks..

The CPU and GPU are on the same dye. What bottleneck are you talking about?  8GB of GDDR5 unified with basically an AMD 8 core Socket FM2 CPU.  Having the GPU and CPU share the sam dye, basically eliminates the bottlneck between CPU and GPU. The only limitation is with how powerfull the GPU is, and how much of the ram the OS and background apps are going to require.

I've been talking about a lot of bottlenecks lately, but here I am talking about the bottleneck of GPU power itself.

To push 4GB of video data on a 1080p screen PS4 GPU would have to be pushing almost insane lighting, physics, particle effects...etc. No amount of high res textures will need 4GB of VRAM at 1080p.

You see these low end cards like the Geforce GT 630 and Radeon 6670 with 2GB of VRAM and you laugh. These cards will hit the performance and bandwith wall before they can even utilize 1 GB of VRAM for modern games, let alone 2. PS4 GPU is obviously more powerful, and pretty capable at utilizing 2 to 3GB of VRAM. But anything over that and you are running in to a GPU bottleneck before you run in to a lack of VRAM memory bottleneck.

I imagine devs like flexibility, but 4GB of VRAM is as much the GPU will ever use at one point and time. The other 4GB of RAM can obviously be used for other things on the backend which is also a plus...