Originally Posted by JonW747
Originally Posted by Spewdom
You still have to take Xbox Series X's faster RAM into account. 10GBs of the GDDR6 is 112GB/s faster than PS5's. And nothing Sony can do about having a less powerful GPU. Especially depending on how low the clock drops with variable frequencies in play. Exactly how low will it drop. Are we looking at 9TF? 8+ TF depending how demanding the game is?
We wont know for sure until folks like DigitalFoundry get their hands on the console and some games, but there's already plenty of speculation that the TFLOPS difference may not be all that key. Supposedly the game devs were more interested in higher clocking compute units rather than more slower clocked units. We'll have to see what they can really do.
As far as RAM goes, I don't see this making any difference. The PS5 has 16GB of GDDR6 with the same speed as an RTX-2080. That's nuts. The XBox has 10GB of RAM that's faster, and 6GB of RAM that's slower. It averages out to a slight improvement and a slight nuisance for the XBox devs to have to even think about (assuming MS doesn't grab all the slow RAM for their OS).
We'll ultimately have to see what the SSD speeds and 12-channel design bring to the party as well, but in PC design, the hard drive has been the low hanging fruit because the devices are so slow. It really does call for using the SSD in new and interesting ways, including virtual memory for instance - which is an operating system feature and wouldn't necessarily require the game developers to modify their code. Flip a switch and instead of 13GB of RAM free, they see 130GB free. Maybe VM would be to slow for graphics, but it could permit a lot more RAM for the actual game design while leaving the GPU with plenty of hard RAM.
Yeah I've seen people throwing their percentages trying to downplay the Teraflops advantage and play up the SSD speed. It's a 1.8TF difference if PS5 can hit 2.23GHz. That's the same between Xbox One X and PS4 Pro. It should be noticeable in resolution and/or framerate. But, all PS5 has to do is drop to 2GHz with its variable clock and that drags the system down to 9.2TF. No one knows exactly how low the clock will drop. Especially as more games are developed for next gen only. Is there a speed it won't go below? And if the multiplier is around 1.62 going from GCN to RDNA2, that would make it 19.6TF vs 16.6TF (with PS5 maintaining highest clock). And this is not even going into how low the CPU will downclock. Or how often, if ever, can the CPU and GPU hit their top clocks simultaneously. Cerny should go more in depth.
All of the 10GB at 560GB/s RAM goes to games. The 2.5GB for the OS comes out of the 6GB at 336GB/s. Giving Series X 13.5GB available to games. We'll see what happens when devs need to use more than 10GB. We still have no word on how much PS5's OS will use.
And so far, the Series X sounds to have an advantage in Ray-tracing until proven in third-party games or when Sony goes more in depth. Series X does 380 billion intersections per second. And takes most the load off doing it in shaders which MS claimed that would consumed over 13TF alone.
Now for the SSD. PS5 has the advantage in I/O speed. That's not up for debate. But, again, is the 5.5GB/s raw maintained at all times? Or will it lose performance as it heats up like all SSDs have done? MS confirmed its 2.4GB/s raw is maintained at all times because performance drops due to heat was unacceptable. And Series X uses a Velocity Architecture to allow devs to store 100GB of game assets to the SSD. Will third-party games only load faster on PS5, or will game worlds load LOD faster? What will they target differently on PS5 that the Series X version can't do? Time will tell.
For me, still too many ifs and what-a-bouts with some of PS5's specs. Maybe in the end, the differences in third-party games is so small most won't care. Who knows. Maybe PS5 comes out on top in the Digital Foundry Head-to-Head videos and causes laughable meltdowns. Overall it won't matter to me because I plan on buying both at launch as I've owned a PlayStation and Xbox the last three generations. The only difference will be which system gets the exclusive-only treatment.